CVE-2022-48285 (published 2023-01-29T05:15Z)

loadAsync in JSZip before 3.8.0 allows Directory Traversal via a crafted ZIP archive.

CVSS v3 base score: 7.3, HIGH (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

Weakness information:
cwe_id: CWE-22
cwe_name: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
description: The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
extended_description: 
            Many file operations are intended to take place within a restricted directory. By using special elements such as ".." and "/" separators, attackers can escape outside of the restricted location to access files or directories that are elsewhere on the system. One of the most common special elements is the "../" sequence, which in most modern operating systems is interpreted as the parent directory of the current location. This is referred to as relative path traversal. Path traversal also covers the use of absolute pathnames such as "/usr/local/bin" to access unexpected files. This is referred to as absolute path traversal.
         
         

Fix information:
repo_url: https://github.com/Stuk/jszip
commit_details: repo_url: https://github.com/Stuk/jszip
author: Stuart Knightley
author_date: 2022-03-30 12:09:27-07:00
msg: Sanitize filenames with `loadAsync` to prevent zip slip attacks
repository: repo_url: https://github.com/Stuk/jszip
repo_name: Stuk/jszip
description: Create, read and edit .zip files with Javascript
repo_language: JavaScript
owner: Stuk
file_changes: filename: CHANGES.md
change_type: ModificationType.MODIFY
diff: @@ -4,10 +4,14 @@ layout: default
 section: main
 ---
 
+### v3.8.0 2022-03-30
+
+- Santize filenames when files are loaded with `loadAsync`, to avoid ["zip slip" attacks](https://snyk.io/research/zip-slip-vulnerability). The original filename is available on each zip entry as `unsafeOriginalName`. See the [documentation](https://stuk.github.io/jszip/documentation/api_jszip/load_async.html). Many thanks to McCaulay Hudson for reporting.
+
 ### v3.7.1 2021-08-05
 
 - Fix build of `dist` files.
-    + Note: this version ensures the changes from 3.7.0 are actually included in the `dist` files. Thanks to Evan W for reporting. 
+    + Note: this version ensures the changes from 3.7.0 are actually included in the `dist` files. Thanks to Evan W for reporting.
 
 ### v3.7.0 2021-07-23
 

programming_language: Markdown
filename: jszip.js
change_type: ModificationType.MODIFY
diff: @@ -1,6 +1,6 @@
 /*!
 
-JSZip v3.7.1 - A JavaScript class for generating and reading zip files
+JSZip v3.8.0 - A JavaScript class for generating and reading zip files
 <http://stuartk.com/jszip>
 
 (c) 2009-2016 Stuart Knightley <stuart [at] stuartk.com>
@@ -1059,7 +1059,7 @@ JSZip.defaults = require('./defaults');
 
 // TODO find a better way to handle this version,
 // a require('package.json').version doesn't work with webpack, see #327
-JSZip.version = "3.7.1";
+JSZip.version = "3.8.0";
 
 JSZip.loadAsync = function (content, options) {
     return new JSZip().loadAsync(content, options);
@@ -1132,7 +1132,11 @@ module.exports = function (data, options) {
             var files = zipEntries.files;
             for (var i = 0; i < files.length; i++) {
                 var input = files[i];
-                zip.file(input.fileNameStr, input.decompressed, {
+
+                var unsafeName = input.fileNameStr;
+                var safeName = utils.resolve(input.fileNameStr);
+
+                zip.file(safeName, input.decompressed, {
                     binary: true,
                     optimizedBinaryString: true,
                     date: input.date,
@@ -1142,6 +1146,9 @@ module.exports = function (data, options) {
                     dosPermissions: input.dosPermissions,
                     createFolders: options.createFolders
                 });
+                if (!input.dir) {
+                    zip.file(safeName).unsafeOriginalName = unsafeName;
+                }
             }
             if (zipEntries.zipComment.length) {
                 zip.comment = zipEntries.zipComment;
@@ -3352,6 +3359,31 @@ exports.transformTo = function(outputType, input) {
     return result;
 };
 
+/**
+ * Resolve all relative path components, "." and "..", in a path. If these relative components
+ * traverse above the root then the resulting path will only contain the final path component.
+ *
+ * All empty components, e.g. "//", are removed.
+ * @param {string} path A path with / or \ separators
+ * @returns {string} The path with all relative path components resolved.
+ */
+exports.resolve = function(path) {
+    var parts = path.split("/");
+    var result = [];
+    for (var index = 0; index < parts.length; index++) {
+        var part = parts[index];
+        // Allow the first and last component to be empty for trailing slashes.
+        if (part === "." || (part === "" && index !== 0 && index !== parts.length - 1)) {
+            continue;
+        } else if (part === "..") {
+            result.pop();
+        } else {
+            result.push(part);
+        }
+    }
+    return result.join("/");
+};
+
 /**
  * Return the type of the input.
  * The type will be in a format valid for JSZip.utils.transformTo : string, array, uint8array, arraybuffer.
@@ -3460,8 +3492,8 @@ exports.prepareContent = function(name, inputData, isBinary, isOptimizedBinarySt
 
     // if inputData is already a promise, this flatten it.
     var promise = external.Promise.resolve(inputData).then(function(data) {
-        
-        
+
+
         var isBlob = support.blob && (data instanceof Blob || ['[object File]', '[object Blob]'].indexOf(Object.prototype.toString.call(data)) !== -1);
 
         if (isBlob && typeof FileReader !== "undefined") {

programming_language: JavaScript
filename: jszip.min.js
change_type: ModificationType.MODIFY
diff: @@ -1,6 +1,6 @@
 /*!
 
-JSZip v3.7.1 - A JavaScript class for generating and reading zip files
+JSZip v3.8.0 - A JavaScript class for generating and reading zip files
 <http://stuartk.com/jszip>
 
 (c) 2009-2016 Stuart Knightley <stuart [at] stuartk.com>
@@ -10,4 +10,4 @@ JSZip uses the library pako released under the MIT license :
 https://github.com/nodeca/pako/blob/master/LICENSE
 */
 
-!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).JSZip=t()}}(function(){return function s(a,o,h){function u(r,t){if(!o[r]){if(!a[r]){var e="function"==typeof require&&require;if(!t&&e)return e(r,!0);if(l)return l(r,!0);var i=new Error("Cannot find module '"+r+"'");throw i.code="MODULE_NOT_FOUND",i}var n=o[r]={exports:{}};a[r][0].call(n.exports,function(t){var e=a[r][1][t];return u(e||t)},n,n.exports,s,a,o,h)}return o[r].exports}for(var l="function"==typeof require&&require,t=0;t<h.length;t++)u(h[t]);return u}({1:[function(t,e,r){"use strict";var c=t("./utils"),d=t("./support"),p="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";r.encode=function(t){for(var e,r,i,n,s,a,o,h=[],u=0,l=t.length,f=l,d="string"!==c.getTypeOf(t);u<t.length;)f=l-u,i=d?(e=t[u++],r=u<l?t[u++]:0,u<l?t[u++]:0):(e=t.charCodeAt(u++),r=u<l?t.charCodeAt(u++):0,u<l?t.charCodeAt(u++):0),n=e>>2,s=(3&e)<<4|r>>4,a=1<f?(15&r)<<2|i>>6:64,o=2<f?63&i:64,h.push(p.charAt(n)+p.charAt(s)+p.charAt(a)+p.charAt(o));return h.join("")},r.decode=function(t){var e,r,i,n,s,a,o=0,h=0,u="data:";if(t.substr(0,u.length)===u)throw new Error("Invalid base64 input, it looks like a data url.");var l,f=3*(t=t.replace(/[^A-Za-z0-9\+\/\=]/g,"")).length/4;if(t.charAt(t.length-1)===p.charAt(64)&&f--,t.charAt(t.length-2)===p.charAt(64)&&f--,f%1!=0)throw new Error("Invalid base64 input, bad content length.");for(l=d.uint8array?new Uint8Array(0|f):new Array(0|f);o<t.length;)e=p.indexOf(t.charAt(o++))<<2|(n=p.indexOf(t.charAt(o++)))>>4,r=(15&n)<<4|(s=p.indexOf(t.charAt(o++)))>>2,i=(3&s)<<6|(a=p.indexOf(t.charAt(o++))),l[h++]=e,64!==s&&(l[h++]=r),64!==a&&(l[h++]=i);return l}},{"./support":30,"./utils":32}],2:[function(t,e,r){"use strict";var i=t("./external"),n=t("./stream/DataWorker"),s=t("./stream/Crc32Probe"),a=t("./stream/DataLengthProbe");function o(t,e,r,i,n){this.compressedSize=t,this.uncompressedSize=e,this.crc32=r,this.compression=i,this.compressedContent=n}o.prototype={getContentWorker:function(){var t=new n(i.Promise.resolve(this.compressedContent)).pipe(this.compression.uncompressWorker()).pipe(new a("data_length")),e=this;return t.on("end",function(){if(this.streamInfo.data_length!==e.uncompressedSize)throw new Error("Bug : uncompressed data size mismatch")}),t},getCompressedWorker:function(){return new n(i.Promise.resolve(this.compressedContent)).withStreamInfo("compressedSize",this.compressedSize).withStreamInfo("uncompressedSize",this.uncompressedSize).withStreamInfo("crc32",this.crc32).withStreamInfo("compression",this.compression)}},o.createWorkerFrom=function(t,e,r){return t.pipe(new s).pipe(new a("uncompressedSize")).pipe(e.compressWorker(r)).pipe(new a("compressedSize")).withStreamInfo("compression",e)},e.exports=o},{"./external":6,"./stream/Crc32Probe":25,"./stream/DataLengthProbe":26,"./stream/DataWorker":27}],3:[function(t,e,r){"use strict";var i=t("./stream/GenericWorker");r.STORE={magic:"\0\0",compressWorker:function(t){return new i("STORE compression")},uncompressWorker:function(){return new i("STORE decompression")}},r.DEFLATE=t("./flate")},{"./flate":7,"./stream/GenericWorker":28}],4:[function(t,e,r){"use strict";var i=t("./utils");var o=function(){for(var t,e=[],r=0;r<256;r++){t=r;for(var i=0;i<8;i++)t=1&t?3988292384^t>>>1:t>>>1;e[r]=t}return e}();e.exports=function(t,e){return void 0!==t&&t.length?"string"!==i.getTypeOf(t)?function(t,e,r,i){var n=o,s=i+r;t^=-1;for(var a=i;a<s;a++)t=t>>>8^n[255&(t^e[a])];return-1^t}(0|e,t,t.length,0):function(t,e,r,i){var n=o,s=i+r;t^=-1;for(var a=i;a<s;a++)t=t>>>8^n[255&(t^e.charCodeAt(a))];return-1^t}(0|e,t,t.length,0):0}},{"./utils":32}],5:[function(t,e,r){"use strict";r.base64=!1,r.binary=!1,r.dir=!1,r.createFolders=!0,r.date=null,r.compression=null,r.compressionOptions=null,r.comment=null,r.unixPermissions=null,r.dosPermissions=null},{}],6:[function(t,e,r){"use strict";var i=null;i="undefined"!=typeof Promise?Promise:t("lie"),e.exports={Promise:i}},{lie:37}],7:[function(t,e,r){"use strict";var i="undefined"!=typeof Uint8Array&&"undefined"!=typeof Uint16Array&&"undefined"!=typeof Uint32Array,n=t("pako"),s=t("./utils"),a=t("./stream/GenericWorker"),o=i?"uint8array":"array";function h(t,e){a.call(this,"FlateWorker/"+t),this._pako=null,this._pakoAction=t,this._pakoOptions=e,this.meta={}}r.magic="\b\0",s.inherits(h,a),h.prototype.processChunk=function(t){this.meta=t.meta,null===this._pako&&this._createPako(),this._pako.push(s.transformTo(o,t.data),!1)},h.prototype.flush=function(){a.prototype.flush.call(this),null===this._pako&&this._createPako(),this._pako.push([],!0)},h.prototype.cleanUp=function(){a.prototype.cleanUp.call(this),this._pako=null},h.prototype._createPako=function(){this._pako=new n[this._pakoAction]({raw:!0,level:this._pakoOptions.level||-1});var e=this;this._pako.onData=function(t){e.push({data:t,meta:e.meta})}},r.compressWorker=function(t){return new h("Deflate",t)},r.uncompressWorker=function(){return new h("Inflate",{})}},{"./stream/GenericWorker":28,"./utils":32,pako:38}],8:[function(t,e,r){"use strict";function A(t,e){var r,i="";for(r=0;r<e;r++)i+=String.fromCharCode(255&t),t>>>=8;return i}function i(t,e,r,i,n,s){var a,o,h=t.file,u=t.compression,l=s!==O.utf8encode,f=I.transformTo("string",s(h.name)),d=I.transformTo("string",O.utf8encode(h.name)),c=h.comment,p=I.transformTo("string",s(c)),m=I.transformTo("string",O.utf8encode(c)),_=d.length!==h.name.length,g=m.length!==c.length,b="",v="",y="",w=h.dir,k=h.date,x={crc32:0,compressedSize:0,uncompressedSize:0};e&&!r||(x.crc32=t.crc32,x.compressedSize=t.compressedSize,x.uncompressedSize=t.uncompressedSize);var S=0;e&&(S|=8),l||!_&&!g||(S|=2048);var z=0,C=0;w&&(z|=16),"UNIX"===n?(C=798,z|=function(t,e){var r=t;return t||(r=e?16893:33204),(65535&r)<<16}(h.unixPermissions,w)):(C=20,z|=function(t){return 63&(t||0)}(h.dosPermissions)),a=k.getUTCHours(),a<<=6,a|=k.getUTCMinutes(),a<<=5,a|=k.getUTCSeconds()/2,o=k.getUTCFullYear()-1980,o<<=4,o|=k.getUTCMonth()+1,o<<=5,o|=k.getUTCDate(),_&&(v=A(1,1)+A(B(f),4)+d,b+="up"+A(v.length,2)+v),g&&(y=A(1,1)+A(B(p),4)+m,b+="uc"+A(y.length,2)+y);var E="";return E+="\n\0",E+=A(S,2),E+=u.magic,E+=A(a,2),E+=A(o,2),E+=A(x.crc32,4),E+=A(x.compressedSize,4),E+=A(x.uncompressedSize,4),E+=A(f.length,2),E+=A(b.length,2),{fileRecord:R.LOCAL_FILE_HEADER+E+f+b,dirRecord:R.CENTRAL_FILE_HEADER+A(C,2)+E+A(p.length,2)+"\0\0\0\0"+A(z,4)+A(i,4)+f+b+p}}var I=t("../utils"),n=t("../stream/GenericWorker"),O=t("../utf8"),B=t("../crc32"),R=t("../signature");function s(t,e,r,i){n.call(this,"ZipFileWorker"),this.bytesWritten=0,this.zipComment=e,this.zipPlatform=r,this.encodeFileName=i,this.streamFiles=t,this.accumulate=!1,this.contentBuffer=[],this.dirRecords=[],this.currentSourceOffset=0,this.entriesCount=0,this.currentFile=null,this._sources=[]}I.inherits(s,n),s.prototype.push=function(t){var e=t.meta.percent||0,r=this.entriesCount,i=this._sources.length;this.accumulate?this.contentBuffer.push(t):(this.bytesWritten+=t.data.length,n.prototype.push.call(this,{data:t.data,meta:{currentFile:this.currentFile,percent:r?(e+100*(r-i-1))/r:100}}))},s.prototype.openedSource=function(t){this.currentSourceOffset=this.bytesWritten,this.currentFile=t.file.name;var e=this.streamFiles&&!t.file.dir;if(e){var r=i(t,e,!1,this.currentSourceOffset,this.zipPlatform,this.encodeFileName);this.push({data:r.fileRecord,meta:{percent:0}})}else this.accumulate=!0},s.prototype.closedSource=function(t){this.accumulate=!1;var e=this.streamFiles&&!t.file.dir,r=i(t,e,!0,this.currentSourceOffset,this.zipPlatform,this.encodeFileName);if(this.dirRecords.push(r.dirRecord),e)this.push({data:function(t){return R.DATA_DESCRIPTOR+A(t.crc32,4)+A(t.compressedSize,4)+A(t.uncompressedSize,4)}(t),meta:{percent:100}});else for(this.push({data:r.fileRecord,meta:{percent:0}});this.contentBuffer.length;)this.push(this.contentBuffer.shift());this.currentFile=null},s.prototype.flush=function(){for(var t=this.bytesWritten,e=0;e<this.dirRecords.length;e++)this.push({data:this.dirRecords[e],meta:{percent:100}});var r=this.bytesWritten-t,i=function(t,e,r,i,n){var s=I.transformTo("string",n(i));return R.CENTRAL_DIRECTORY_END+"\0\0\0\0"+A(t,2)+A(t,2)+A(e,4)+A(r,4)+A(s.length,2)+s}(this.dirRecords.length,r,t,this.zipComment,this.encodeFileName);this.push({data:i,meta:{percent:100}})},s.prototype.prepareNextSource=function(){this.previous=this._sources.shift(),this.openedSource(this.previous.streamInfo),this.isPaused?this.previous.pause():this.previous.resume()},s.prototype.registerPrevious=function(t){this._sources.push(t);var e=this;return t.on("data",function(t){e.processChunk(t)}),t.on("end",function(){e.closedSource(e.previous.streamInfo),e._sources.length?e.prepareNextSource():e.end()}),t.on("error",function(t){e.error(t)}),this},s.prototype.resume=function(){return!!n.prototype.resume.call(this)&&(!this.previous&&this._sources.length?(this.prepareNextSource(),!0):this.previous||this._sources.length||this.generatedError?void 0:(this.end(),!0))},s.prototype.error=function(t){var e=this._sources;if(!n.prototype.error.call(this,t))return!1;for(var r=0;r<e.length;r++)try{e[r].error(t)}catch(t){}return!0},s.prototype.lock=function(){n.prototype.lock.call(this);for(var t=this._sources,e=0;e<t.length;e++)t[e].lock()},e.exports=s},{"../crc32":4,"../signature":23,"../stream/GenericWorker":28,"../utf8":31,"../utils":32}],9:[function(t,e,r){"use strict";var u=t("../compressions"),i=t("./ZipFileWorker");r.generateWorker=function(t,a,e){var o=new i(a.streamFiles,e,a.platform,a.encodeFileName),h=0;try{t.forEach(function(t,e){h++;var r=function(t,e){var r=t||e,i=u[r];if(!i)throw new Error(r+" is not a valid compression method !");return i}(e.options.compression,a.compression),i=e.options.compressionOptions||a.compressionOptions||{},n=e.dir,s=e.date;e._compressWorker(r,i).withStreamInfo("file",{name:t,dir:n,date:s,comment:e.comment||"",unixPermissions:e.unixPermissions,dosPermissions:e.dosPermissions}).pipe(o)}),o.entriesCount=h}catch(t){o.error(t)}return o}},{"../compressions":3,"./ZipFileWorker":8}],10:[function(t,e,r){"use strict";function i(){if(!(this instanceof i))return new i;if(arguments.length)throw new Error("The constructor with parameters has been removed in JSZip 3.0, please check the upgrade guide.");this.files=Object.create(null),this.comment=null,this.root="",this.clone=function(){var t=new i;for(var e in this)"function"!=typeof this[e]&&(t[e]=this[e]);return t}}(i.prototype=t("./object")).loadAsync=t("./load"),i.support=t("./support"),i.defaults=t("./defaults"),i.version="3.7.1",i.loadAsync=function(t,e){return(new i).loadAsync(t,e)},i.external=t("./external"),e.exports=i},{"./defaults":5,"./external":6,"./load":11,"./object":15,"./support":30}],11:[function(t,e,r){"use strict";var i=t("./utils"),n=t("./external"),o=t("./utf8"),h=t("./zipEntries"),s=t("./stream/Crc32Probe"),u=t("./nodejsUtils");function l(i){return new n.Promise(function(t,e){var r=i.decompressed.getContentWorker().pipe(new s);r.on("error",function(t){e(t)}).on("end",function(){r.streamInfo.crc32!==i.decompressed.crc32?e(new Error("Corrupted zip : CRC32 mismatch")):t()}).resume()})}e.exports=function(t,s){var a=this;return s=i.extend(s||{},{base64:!1,checkCRC32:!1,optimizedBinaryString:!1,createFolders:!1,decodeFileName:o.utf8decode}),u.isNode&&u.isStream(t)?n.Promise.reject(new Error("JSZip can't accept a stream when loading a zip file.")):i.prepareContent("the loaded zip 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-1)");if(null===(e=function(t){for(var e in h)if(h.hasOwnProperty(e)&&h[e].magic===t)return h[e];return null}(this.compressionMethod)))throw new Error("Corrupted zip : compression "+s.pretty(this.compressionMethod)+" unknown (inner file : "+s.transformTo("string",this.fileName)+")");this.decompressed=new n(this.compressedSize,this.uncompressedSize,this.crc32,e,t.readData(this.compressedSize))},readCentralPart:function(t){this.versionMadeBy=t.readInt(2),t.skip(2),this.bitFlag=t.readInt(2),this.compressionMethod=t.readString(2),this.date=t.readDate(),this.crc32=t.readInt(4),this.compressedSize=t.readInt(4),this.uncompressedSize=t.readInt(4);var e=t.readInt(2);if(this.extraFieldsLength=t.readInt(2),this.fileCommentLength=t.readInt(2),this.diskNumberStart=t.readInt(2),this.internalFileAttributes=t.readInt(2),this.externalFileAttributes=t.readInt(4),this.localHeaderOffset=t.readInt(4),this.isEncrypted())throw new Error("Encrypted zip are not supported");t.skip(e),this.readExtraFields(t),this.parseZIP64ExtraField(t),this.fileComment=t.readData(this.fileCommentLength)},processAttributes:function(){this.unixPermissions=null,this.dosPermissions=null;var t=this.versionMadeBy>>8;this.dir=!!(16&this.externalFileAttributes),0==t&&(this.dosPermissions=63&this.externalFileAttributes),3==t&&(this.unixPermissions=this.externalFileAttributes>>16&65535),this.dir||"/"!==this.fileNameStr.slice(-1)||(this.dir=!0)},parseZIP64ExtraField:function(t){if(this.extraFields[1]){var e=i(this.extraFields[1].value);this.uncompressedSize===s.MAX_VALUE_32BITS&&(this.uncompressedSize=e.readInt(8)),this.compressedSize===s.MAX_VALUE_32BITS&&(this.compressedSize=e.readInt(8)),this.localHeaderOffset===s.MAX_VALUE_32BITS&&(this.localHeaderOffset=e.readInt(8)),this.diskNumberStart===s.MAX_VALUE_32BITS&&(this.diskNumberStart=e.readInt(4))}},readExtraFields:function(t){var e,r,i,n=t.index+this.extraFieldsLength;for(this.extraFields||(this.extraFields={});t.index+4<n;)e=t.readInt(2),r=t.readInt(2),i=t.readData(r),this.extraFields[e]={id:e,length:r,value:i};t.setIndex(n)},handleUTF8:function(){var t=u.uint8array?"uint8array":"array";if(this.useUTF8())this.fileNameStr=o.utf8decode(this.fileName),this.fileCommentStr=o.utf8decode(this.fileComment);else{var e=this.findExtraFieldUnicodePath();if(null!==e)this.fileNameStr=e;else{var r=s.transformTo(t,this.fileName);this.fileNameStr=this.loadOptions.decodeFileName(r)}var i=this.findExtraFieldUnicodeComment();if(null!==i)this.fileCommentStr=i;else{var n=s.transformTo(t,this.fileComment);this.fileCommentStr=this.loadOptions.decodeFileName(n)}}},findExtraFieldUnicodePath:function(){var t=this.extraFields[28789];if(t){var e=i(t.value);return 1!==e.readInt(1)?null:a(this.fileName)!==e.readInt(4)?null:o.utf8decode(e.readData(t.length-5))}return null},findExtraFieldUnicodeComment:function(){var t=this.extraFields[25461];if(t){var e=i(t.value);return 1!==e.readInt(1)?null:a(this.fileComment)!==e.readInt(4)?null:o.utf8decode(e.readData(t.length-5))}return null}},e.exports=l},{"./compressedObject":2,"./compressions":3,"./crc32":4,"./reader/readerFor":22,"./support":30,"./utf8":31,"./utils":32}],35:[function(t,e,r){"use strict";function i(t,e,r){this.name=t,this.dir=r.dir,this.date=r.date,this.comment=r.comment,this.unixPermissions=r.unixPermissions,this.dosPermissions=r.dosPermissions,this._data=e,this._dataBinary=r.binary,this.options={compression:r.compression,compressionOptions:r.compressionOptions}}var s=t("./stream/StreamHelper"),n=t("./stream/DataWorker"),a=t("./utf8"),o=t("./compressedObject"),h=t("./stream/GenericWorker");i.prototype={internalStream:function(t){var e=null,r="string";try{if(!t)throw new Error("No output type specified.");var i="string"===(r=t.toLowerCase())||"text"===r;"binarystring"!==r&&"text"!==r||(r="string"),e=this._decompressWorker();var n=!this._dataBinary;n&&!i&&(e=e.pipe(new a.Utf8EncodeWorker)),!n&&i&&(e=e.pipe(new a.Utf8DecodeWorker))}catch(t){(e=new h("error")).error(t)}return new s(e,r,"")},async:function(t,e){return this.internalStream(t).accumulate(e)},nodeStream:function(t,e){return this.internalStream(t||"nodebuffer").toNodejsStream(e)},_compressWorker:function(t,e){if(this._data instanceof o&&this._data.compression.magic===t.magic)return this._data.getCompressedWorker();var r=this._decompressWorker();return this._dataBinary||(r=r.pipe(new a.Utf8EncodeWorker)),o.createWorkerFrom(r,t,e)},_decompressWorker:function(){return this._data instanceof o?this._data.getContentWorker():this._data instanceof h?this._data:new n(this._data)}};for(var u=["asText","asBinary","asNodeBuffer","asUint8Array","asArrayBuffer"],l=function(){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade 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d.Buf16(2*s+1),D(this.depth),this.l_buf=0,this.lit_bufsize=0,this.last_lit=0,this.d_buf=0,this.opt_len=0,this.static_len=0,this.matches=0,this.insert=0,this.bi_buf=0,this.bi_valid=0}function G(t){var e;return t&&t.state?(t.total_in=t.total_out=0,t.data_type=n,(e=t.state).pending=0,e.pending_out=0,e.wrap<0&&(e.wrap=-e.wrap),e.status=e.wrap?C:E,t.adler=2===e.wrap?0:1,e.last_flush=l,u._tr_init(e),m):R(t,_)}function K(t){var e=G(t);return e===m&&function(t){t.window_size=2*t.w_size,D(t.head),t.max_lazy_match=h[t.level].max_lazy,t.good_match=h[t.level].good_length,t.nice_match=h[t.level].nice_length,t.max_chain_length=h[t.level].max_chain,t.strstart=0,t.block_start=0,t.lookahead=0,t.insert=0,t.match_length=t.prev_length=x-1,t.match_available=0,t.ins_h=0}(t.state),e}function Y(t,e,r,i,n,s){if(!t)return _;var a=1;if(e===g&&(e=6),i<0?(a=0,i=-i):15<i&&(a=2,i-=16),n<1||y<n||r!==v||i<8||15<i||e<0||9<e||s<0||b<s)return R(t,_);8===i&&(i=9);var o=new H;return(t.state=o).strm=t,o.wrap=a,o.gzhead=null,o.w_bits=i,o.w_size=1<<o.w_bits,o.w_mask=o.w_size-1,o.hash_bits=n+7,o.hash_size=1<<o.hash_bits,o.hash_mask=o.hash_size-1,o.hash_shift=~~((o.hash_bits+x-1)/x),o.window=new d.Buf8(2*o.w_size),o.head=new d.Buf16(o.hash_size),o.prev=new d.Buf16(o.w_size),o.lit_bufsize=1<<n+6,o.pending_buf_size=4*o.lit_bufsize,o.pending_buf=new d.Buf8(o.pending_buf_size),o.d_buf=1*o.lit_bufsize,o.l_buf=3*o.lit_bufsize,o.level=e,o.strategy=s,o.method=r,K(t)}h=[new M(0,0,0,0,function(t,e){var r=65535;for(r>t.pending_buf_size-5&&(r=t.pending_buf_size-5);;){if(t.lookahead<=1){if(j(t),0===t.lookahead&&e===l)return A;if(0===t.lookahead)break}t.strstart+=t.lookahead,t.lookahead=0;var i=t.block_start+r;if((0===t.strstart||t.strstart>=i)&&(t.lookahead=t.strstart-i,t.strstart=i,N(t,!1),0===t.strm.avail_out))return A;if(t.strstart-t.block_start>=t.w_size-z&&(N(t,!1),0===t.strm.avail_out))return A}return t.insert=0,e===f?(N(t,!0),0===t.strm.avail_out?O:B):(t.strstart>t.block_start&&(N(t,!1),t.strm.avail_out),A)}),new M(4,4,8,4,Z),new M(4,5,16,8,Z),new M(4,6,32,32,Z),new M(4,4,16,16,W),new M(8,16,32,32,W),new M(8,16,128,128,W),new M(8,32,128,256,W),new M(32,128,258,1024,W),new M(32,258,258,4096,W)],r.deflateInit=function(t,e){return Y(t,e,v,15,8,0)},r.deflateInit2=Y,r.deflateReset=K,r.deflateResetKeep=G,r.deflateSetHeader=function(t,e){return t&&t.state?2!==t.state.wrap?_:(t.state.gzhead=e,m):_},r.deflate=function(t,e){var r,i,n,s;if(!t||!t.state||5<e||e<0)return t?R(t,_):_;if(i=t.state,!t.output||!t.input&&0!==t.avail_in||666===i.status&&e!==f)return R(t,0===t.avail_out?-5:_);if(i.strm=t,r=i.last_flush,i.last_flush=e,i.status===C)if(2===i.wrap)t.adler=0,U(i,31),U(i,139),U(i,8),i.gzhead?(U(i,(i.gzhead.text?1:0)+(i.gzhead.hcrc?2:0)+(i.gzhead.extra?4:0)+(i.gzhead.name?8:0)+(i.gzhead.comment?16:0)),U(i,255&i.gzhead.time),U(i,i.gzhead.time>>8&255),U(i,i.gzhead.time>>16&255),U(i,i.gzhead.time>>24&255),U(i,9===i.level?2:2<=i.strategy||i.level<2?4:0),U(i,255&i.gzhead.os),i.gzhead.extra&&i.gzhead.extra.length&&(U(i,255&i.gzhead.extra.length),U(i,i.gzhead.extra.length>>8&255)),i.gzhead.hcrc&&(t.adler=p(t.adler,i.pending_buf,i.pending,0)),i.gzindex=0,i.status=69):(U(i,0),U(i,0),U(i,0),U(i,0),U(i,0),U(i,9===i.level?2:2<=i.strategy||i.level<2?4:0),U(i,3),i.status=E);else{var a=v+(i.w_bits-8<<4)<<8;a|=(2<=i.strategy||i.level<2?0:i.level<6?1:6===i.level?2:3)<<6,0!==i.strstart&&(a|=32),a+=31-a%31,i.status=E,P(i,a),0!==i.strstart&&(P(i,t.adler>>>16),P(i,65535&t.adler)),t.adler=1}if(69===i.status)if(i.gzhead.extra){for(n=i.pending;i.gzindex<(65535&i.gzhead.extra.length)&&(i.pending!==i.pending_buf_size||(i.gzhead.hcrc&&i.pending>n&&(t.adler=p(t.adler,i.pending_buf,i.pending-n,n)),F(t),n=i.pending,i.pending!==i.pending_buf_size));)U(i,255&i.gzhead.extra[i.gzindex]),i.gzindex++;i.gzhead.hcrc&&i.pending>n&&(t.adler=p(t.adler,i.pending_buf,i.pending-n,n)),i.gzindex===i.gzhead.extra.length&&(i.gzindex=0,i.status=73)}else i.status=73;if(73===i.status)if(i.gzhead.name){n=i.pending;do{if(i.pending===i.pending_buf_size&&(i.gzhead.hcrc&&i.pending>n&&(t.adler=p(t.adler,i.pending_buf,i.pending-n,n)),F(t),n=i.pending,i.pending===i.pending_buf_size)){s=1;break}s=i.gzindex<i.gzhead.name.length?255&i.gzhead.name.charCodeAt(i.gzindex++):0,U(i,s)}while(0!==s);i.gzhead.hcrc&&i.pending>n&&(t.adler=p(t.adler,i.pending_buf,i.pending-n,n)),0===s&&(i.gzindex=0,i.status=91)}else i.status=91;if(91===i.status)if(i.gzhead.comment){n=i.pending;do{if(i.pending===i.pending_buf_size&&(i.gzhead.hcrc&&i.pending>n&&(t.adler=p(t.adler,i.pending_buf,i.pending-n,n)),F(t),n=i.pending,i.pending===i.pending_buf_size)){s=1;break}s=i.gzindex<i.gzhead.comment.length?255&i.gzhead.comment.charCodeAt(i.gzindex++):0,U(i,s)}while(0!==s);i.gzhead.hcrc&&i.pending>n&&(t.adler=p(t.adler,i.pending_buf,i.pending-n,n)),0===s&&(i.status=103)}else i.status=103;if(103===i.status&&(i.gzhead.hcrc?(i.pending+2>i.pending_buf_size&&F(t),i.pending+2<=i.pending_buf_size&&(U(i,255&t.adler),U(i,t.adler>>8&255),t.adler=0,i.status=E)):i.status=E),0!==i.pending){if(F(t),0===t.avail_out)return i.last_flush=-1,m}else if(0===t.avail_in&&T(e)<=T(r)&&e!==f)return R(t,-5);if(666===i.status&&0!==t.avail_in)return R(t,-5);if(0!==t.avail_in||0!==i.lookahead||e!==l&&666!==i.status){var o=2===i.strategy?function(t,e){for(var r;;){if(0===t.lookahead&&(j(t),0===t.lookahead)){if(e===l)return A;break}if(t.match_length=0,r=u._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++,r&&(N(t,!1),0===t.strm.avail_out))return A}return t.insert=0,e===f?(N(t,!0),0===t.strm.avail_out?O:B):t.last_lit&&(N(t,!1),0===t.strm.avail_out)?A:I}(i,e):3===i.strategy?function(t,e){for(var r,i,n,s,a=t.window;;){if(t.lookahead<=S){if(j(t),t.lookahead<=S&&e===l)return A;if(0===t.lookahead)break}if(t.match_length=0,t.lookahead>=x&&0<t.strstart&&(i=a[n=t.strstart-1])===a[++n]&&i===a[++n]&&i===a[++n]){s=t.strstart+S;do{}while(i===a[++n]&&i===a[++n]&&i===a[++n]&&i===a[++n]&&i===a[++n]&&i===a[++n]&&i===a[++n]&&i===a[++n]&&n<s);t.match_length=S-(s-n),t.match_length>t.lookahead&&(t.match_length=t.lookahead)}if(t.match_length>=x?(r=u._tr_tally(t,1,t.match_length-x),t.lookahead-=t.match_length,t.strstart+=t.match_length,t.match_length=0):(r=u._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++),r&&(N(t,!1),0===t.strm.avail_out))return A}return t.insert=0,e===f?(N(t,!0),0===t.strm.avail_out?O:B):t.last_lit&&(N(t,!1),0===t.strm.avail_out)?A:I}(i,e):h[i.level].func(i,e);if(o!==O&&o!==B||(i.status=666),o===A||o===O)return 0===t.avail_out&&(i.last_flush=-1),m;if(o===I&&(1===e?u._tr_align(i):5!==e&&(u._tr_stored_block(i,0,0,!1),3===e&&(D(i.head),0===i.lookahead&&(i.strstart=0,i.block_start=0,i.insert=0))),F(t),0===t.avail_out))return i.last_flush=-1,m}return e!==f?m:i.wrap<=0?1:(2===i.wrap?(U(i,255&t.adler),U(i,t.adler>>8&255),U(i,t.adler>>16&255),U(i,t.adler>>24&255),U(i,255&t.total_in),U(i,t.total_in>>8&255),U(i,t.total_in>>16&255),U(i,t.total_in>>24&255)):(P(i,t.adler>>>16),P(i,65535&t.adler)),F(t),0<i.wrap&&(i.wrap=-i.wrap),0!==i.pending?m:1)},r.deflateEnd=function(t){var e;return t&&t.state?(e=t.state.status)!==C&&69!==e&&73!==e&&91!==e&&103!==e&&e!==E&&666!==e?R(t,_):(t.state=null,e===E?R(t,-3):m):_},r.deflateSetDictionary=function(t,e){var r,i,n,s,a,o,h,u,l=e.length;if(!t||!t.state)return _;if(2===(s=(r=t.state).wrap)||1===s&&r.status!==C||r.lookahead)return _;for(1===s&&(t.adler=c(t.adler,e,l,0)),r.wrap=0,l>=r.w_size&&(0===s&&(D(r.head),r.strstart=0,r.block_start=0,r.insert=0),u=new d.Buf8(r.w_size),d.arraySet(u,e,l-r.w_size,r.w_size,0),e=u,l=r.w_size),a=t.avail_in,o=t.next_in,h=t.input,t.avail_in=l,t.next_in=0,t.input=e,j(r);r.lookahead>=x;){for(i=r.strstart,n=r.lookahead-(x-1);r.ins_h=(r.ins_h<<r.hash_shift^r.window[i+x-1])&r.hash_mask,r.prev[i&r.w_mask]=r.head[r.ins_h],r.head[r.ins_h]=i,i++,--n;);r.strstart=i,r.lookahead=x-1,j(r)}return r.strstart+=r.lookahead,r.block_start=r.strstart,r.insert=r.lookahead,r.lookahead=0,r.match_length=r.prev_length=x-1,r.match_available=0,t.next_in=o,t.input=h,t.avail_in=a,r.wrap=s,m},r.deflateInfo="pako deflate (from Nodeca project)"},{"../utils/common":41,"./adler32":43,"./crc32":45,"./messages":51,"./trees":52}],47:[function(t,e,r){"use strict";e.exports=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1}},{}],48:[function(t,e,r){"use strict";e.exports=function(t,e){var r,i,n,s,a,o,h,u,l,f,d,c,p,m,_,g,b,v,y,w,k,x,S,z,C;r=t.state,i=t.next_in,z=t.input,n=i+(t.avail_in-5),s=t.next_out,C=t.output,a=s-(e-t.avail_out),o=s+(t.avail_out-257),h=r.dmax,u=r.wsize,l=r.whave,f=r.wnext,d=r.window,c=r.hold,p=r.bits,m=r.lencode,_=r.distcode,g=(1<<r.lenbits)-1,b=(1<<r.distbits)-1;t:do{p<15&&(c+=z[i++]<<p,p+=8,c+=z[i++]<<p,p+=8),v=m[c&g];e:for(;;){if(c>>>=y=v>>>24,p-=y,0===(y=v>>>16&255))C[s++]=65535&v;else{if(!(16&y)){if(0==(64&y)){v=m[(65535&v)+(c&(1<<y)-1)];continue e}if(32&y){r.mode=12;break t}t.msg="invalid literal/length code",r.mode=30;break t}w=65535&v,(y&=15)&&(p<y&&(c+=z[i++]<<p,p+=8),w+=c&(1<<y)-1,c>>>=y,p-=y),p<15&&(c+=z[i++]<<p,p+=8,c+=z[i++]<<p,p+=8),v=_[c&b];r:for(;;){if(c>>>=y=v>>>24,p-=y,!(16&(y=v>>>16&255))){if(0==(64&y)){v=_[(65535&v)+(c&(1<<y)-1)];continue r}t.msg="invalid distance code",r.mode=30;break t}if(k=65535&v,p<(y&=15)&&(c+=z[i++]<<p,(p+=8)<y&&(c+=z[i++]<<p,p+=8)),h<(k+=c&(1<<y)-1)){t.msg="invalid distance too far back",r.mode=30;break t}if(c>>>=y,p-=y,(y=s-a)<k){if(l<(y=k-y)&&r.sane){t.msg="invalid distance too far back",r.mode=30;break t}if(S=d,(x=0)===f){if(x+=u-y,y<w){for(w-=y;C[s++]=d[x++],--y;);x=s-k,S=C}}else if(f<y){if(x+=u+f-y,(y-=f)<w){for(w-=y;C[s++]=d[x++],--y;);if(x=0,f<w){for(w-=y=f;C[s++]=d[x++],--y;);x=s-k,S=C}}}else if(x+=f-y,y<w){for(w-=y;C[s++]=d[x++],--y;);x=s-k,S=C}for(;2<w;)C[s++]=S[x++],C[s++]=S[x++],C[s++]=S[x++],w-=3;w&&(C[s++]=S[x++],1<w&&(C[s++]=S[x++]))}else{for(x=s-k;C[s++]=C[x++],C[s++]=C[x++],C[s++]=C[x++],2<(w-=3););w&&(C[s++]=C[x++],1<w&&(C[s++]=C[x++]))}break}}break}}while(i<n&&s<o);i-=w=p>>3,c&=(1<<(p-=w<<3))-1,t.next_in=i,t.next_out=s,t.avail_in=i<n?n-i+5:5-(i-n),t.avail_out=s<o?o-s+257:257-(s-o),r.hold=c,r.bits=p}},{}],49:[function(t,e,r){"use strict";var I=t("../utils/common"),O=t("./adler32"),B=t("./crc32"),R=t("./inffast"),T=t("./inftrees"),D=1,F=2,N=0,U=-2,P=1,i=852,n=592;function L(t){return(t>>>24&255)+(t>>>8&65280)+((65280&t)<<8)+((255&t)<<24)}function 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t&&t.state?(i=t.state,e<0?(r=0,e=-e):(r=1+(e>>4),e<48&&(e&=15)),e&&(e<8||15<e)?U:(null!==i.window&&i.wbits!==e&&(i.window=null),i.wrap=r,i.wbits=e,o(t))):U}function u(t,e){var r,i;return t?(i=new s,(t.state=i).window=null,(r=h(t,e))!==N&&(t.state=null),r):U}var l,f,d=!0;function j(t){if(d){var e;for(l=new I.Buf32(512),f=new I.Buf32(32),e=0;e<144;)t.lens[e++]=8;for(;e<256;)t.lens[e++]=9;for(;e<280;)t.lens[e++]=7;for(;e<288;)t.lens[e++]=8;for(T(D,t.lens,0,288,l,0,t.work,{bits:9}),e=0;e<32;)t.lens[e++]=5;T(F,t.lens,0,32,f,0,t.work,{bits:5}),d=!1}t.lencode=l,t.lenbits=9,t.distcode=f,t.distbits=5}function Z(t,e,r,i){var n,s=t.state;return null===s.window&&(s.wsize=1<<s.wbits,s.wnext=0,s.whave=0,s.window=new I.Buf8(s.wsize)),i>=s.wsize?(I.arraySet(s.window,e,r-s.wsize,s.wsize,0),s.wnext=0,s.whave=s.wsize):(i<(n=s.wsize-s.wnext)&&(n=i),I.arraySet(s.window,e,r-i,n,s.wnext),(i-=n)?(I.arraySet(s.window,e,r-i,i,0),s.wnext=i,s.whave=s.wsize):(s.wnext+=n,s.wnext===s.wsize&&(s.wnext=0),s.whave<s.wsize&&(s.whave+=n))),0}r.inflateReset=o,r.inflateReset2=h,r.inflateResetKeep=a,r.inflateInit=function(t){return u(t,15)},r.inflateInit2=u,r.inflate=function(t,e){var r,i,n,s,a,o,h,u,l,f,d,c,p,m,_,g,b,v,y,w,k,x,S,z,C=0,E=new I.Buf8(4),A=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];if(!t||!t.state||!t.output||!t.input&&0!==t.avail_in)return U;12===(r=t.state).mode&&(r.mode=13),a=t.next_out,n=t.output,h=t.avail_out,s=t.next_in,i=t.input,o=t.avail_in,u=r.hold,l=r.bits,f=o,d=h,x=N;t:for(;;)switch(r.mode){case P:if(0===r.wrap){r.mode=13;break}for(;l<16;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(2&r.wrap&&35615===u){E[r.check=0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0),l=u=0,r.mode=2;break}if(r.flags=0,r.head&&(r.head.done=!1),!(1&r.wrap)||(((255&u)<<8)+(u>>8))%31){t.msg="incorrect header check",r.mode=30;break}if(8!=(15&u)){t.msg="unknown compression method",r.mode=30;break}if(l-=4,k=8+(15&(u>>>=4)),0===r.wbits)r.wbits=k;else if(k>r.wbits){t.msg="invalid window size",r.mode=30;break}r.dmax=1<<k,t.adler=r.check=1,r.mode=512&u?10:12,l=u=0;break;case 2:for(;l<16;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(r.flags=u,8!=(255&r.flags)){t.msg="unknown compression method",r.mode=30;break}if(57344&r.flags){t.msg="unknown header flags set",r.mode=30;break}r.head&&(r.head.text=u>>8&1),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0)),l=u=0,r.mode=3;case 3:for(;l<32;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}r.head&&(r.head.time=u),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,E[2]=u>>>16&255,E[3]=u>>>24&255,r.check=B(r.check,E,4,0)),l=u=0,r.mode=4;case 4:for(;l<16;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}r.head&&(r.head.xflags=255&u,r.head.os=u>>8),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0)),l=u=0,r.mode=5;case 5:if(1024&r.flags){for(;l<16;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}r.length=u,r.head&&(r.head.extra_len=u),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0)),l=u=0}else r.head&&(r.head.extra=null);r.mode=6;case 6:if(1024&r.flags&&(o<(c=r.length)&&(c=o),c&&(r.head&&(k=r.head.extra_len-r.length,r.head.extra||(r.head.extra=new Array(r.head.extra_len)),I.arraySet(r.head.extra,i,s,c,k)),512&r.flags&&(r.check=B(r.check,i,c,s)),o-=c,s+=c,r.length-=c),r.length))break t;r.length=0,r.mode=7;case 7:if(2048&r.flags){if(0===o)break t;for(c=0;k=i[s+c++],r.head&&k&&r.length<65536&&(r.head.name+=String.fromCharCode(k)),k&&c<o;);if(512&r.flags&&(r.check=B(r.check,i,c,s)),o-=c,s+=c,k)break t}else r.head&&(r.head.name=null);r.length=0,r.mode=8;case 8:if(4096&r.flags){if(0===o)break t;for(c=0;k=i[s+c++],r.head&&k&&r.length<65536&&(r.head.comment+=String.fromCharCode(k)),k&&c<o;);if(512&r.flags&&(r.check=B(r.check,i,c,s)),o-=c,s+=c,k)break t}else r.head&&(r.head.comment=null);r.mode=9;case 9:if(512&r.flags){for(;l<16;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(u!==(65535&r.check)){t.msg="header crc mismatch",r.mode=30;break}l=u=0}r.head&&(r.head.hcrc=r.flags>>9&1,r.head.done=!0),t.adler=r.check=0,r.mode=12;break;case 10:for(;l<32;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}t.adler=r.check=L(u),l=u=0,r.mode=11;case 11:if(0===r.havedict)return t.next_out=a,t.avail_out=h,t.next_in=s,t.avail_in=o,r.hold=u,r.bits=l,2;t.adler=r.check=1,r.mode=12;case 12:if(5===e||6===e)break t;case 13:if(r.last){u>>>=7&l,l-=7&l,r.mode=27;break}for(;l<3;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}switch(r.last=1&u,l-=1,3&(u>>>=1)){case 0:r.mode=14;break;case 1:if(j(r),r.mode=20,6!==e)break;u>>>=2,l-=2;break t;case 2:r.mode=17;break;case 3:t.msg="invalid block type",r.mode=30}u>>>=2,l-=2;break;case 14:for(u>>>=7&l,l-=7&l;l<32;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if((65535&u)!=(u>>>16^65535)){t.msg="invalid stored block lengths",r.mode=30;break}if(r.length=65535&u,l=u=0,r.mode=15,6===e)break t;case 15:r.mode=16;case 16:if(c=r.length){if(o<c&&(c=o),h<c&&(c=h),0===c)break t;I.arraySet(n,i,s,c,a),o-=c,s+=c,h-=c,a+=c,r.length-=c;break}r.mode=12;break;case 17:for(;l<14;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(r.nlen=257+(31&u),u>>>=5,l-=5,r.ndist=1+(31&u),u>>>=5,l-=5,r.ncode=4+(15&u),u>>>=4,l-=4,286<r.nlen||30<r.ndist){t.msg="too many length or distance symbols",r.mode=30;break}r.have=0,r.mode=18;case 18:for(;r.have<r.ncode;){for(;l<3;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}r.lens[A[r.have++]]=7&u,u>>>=3,l-=3}for(;r.have<19;)r.lens[A[r.have++]]=0;if(r.lencode=r.lendyn,r.lenbits=7,S={bits:r.lenbits},x=T(0,r.lens,0,19,r.lencode,0,r.work,S),r.lenbits=S.bits,x){t.msg="invalid code lengths set",r.mode=30;break}r.have=0,r.mode=19;case 19:for(;r.have<r.nlen+r.ndist;){for(;g=(C=r.lencode[u&(1<<r.lenbits)-1])>>>16&255,b=65535&C,!((_=C>>>24)<=l);){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(b<16)u>>>=_,l-=_,r.lens[r.have++]=b;else{if(16===b){for(z=_+2;l<z;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(u>>>=_,l-=_,0===r.have){t.msg="invalid bit length repeat",r.mode=30;break}k=r.lens[r.have-1],c=3+(3&u),u>>>=2,l-=2}else if(17===b){for(z=_+3;l<z;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}l-=_,k=0,c=3+(7&(u>>>=_)),u>>>=3,l-=3}else{for(z=_+7;l<z;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}l-=_,k=0,c=11+(127&(u>>>=_)),u>>>=7,l-=7}if(r.have+c>r.nlen+r.ndist){t.msg="invalid bit length repeat",r.mode=30;break}for(;c--;)r.lens[r.have++]=k}}if(30===r.mode)break;if(0===r.lens[256]){t.msg="invalid code -- missing end-of-block",r.mode=30;break}if(r.lenbits=9,S={bits:r.lenbits},x=T(D,r.lens,0,r.nlen,r.lencode,0,r.work,S),r.lenbits=S.bits,x){t.msg="invalid literal/lengths set",r.mode=30;break}if(r.distbits=6,r.distcode=r.distdyn,S={bits:r.distbits},x=T(F,r.lens,r.nlen,r.ndist,r.distcode,0,r.work,S),r.distbits=S.bits,x){t.msg="invalid distances set",r.mode=30;break}if(r.mode=20,6===e)break t;case 20:r.mode=21;case 21:if(6<=o&&258<=h){t.next_out=a,t.avail_out=h,t.next_in=s,t.avail_in=o,r.hold=u,r.bits=l,R(t,d),a=t.next_out,n=t.output,h=t.avail_out,s=t.next_in,i=t.input,o=t.avail_in,u=r.hold,l=r.bits,12===r.mode&&(r.back=-1);break}for(r.back=0;g=(C=r.lencode[u&(1<<r.lenbits)-1])>>>16&255,b=65535&C,!((_=C>>>24)<=l);){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(g&&0==(240&g)){for(v=_,y=g,w=b;g=(C=r.lencode[w+((u&(1<<v+y)-1)>>v)])>>>16&255,b=65535&C,!(v+(_=C>>>24)<=l);){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}u>>>=v,l-=v,r.back+=v}if(u>>>=_,l-=_,r.back+=_,r.length=b,0===g){r.mode=26;break}if(32&g){r.back=-1,r.mode=12;break}if(64&g){t.msg="invalid literal/length code",r.mode=30;break}r.extra=15&g,r.mode=22;case 22:if(r.extra){for(z=r.extra;l<z;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}r.length+=u&(1<<r.extra)-1,u>>>=r.extra,l-=r.extra,r.back+=r.extra}r.was=r.length,r.mode=23;case 23:for(;g=(C=r.distcode[u&(1<<r.distbits)-1])>>>16&255,b=65535&C,!((_=C>>>24)<=l);){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(0==(240&g)){for(v=_,y=g,w=b;g=(C=r.distcode[w+((u&(1<<v+y)-1)>>v)])>>>16&255,b=65535&C,!(v+(_=C>>>24)<=l);){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}u>>>=v,l-=v,r.back+=v}if(u>>>=_,l-=_,r.back+=_,64&g){t.msg="invalid distance code",r.mode=30;break}r.offset=b,r.extra=15&g,r.mode=24;case 24:if(r.extra){for(z=r.extra;l<z;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}r.offset+=u&(1<<r.extra)-1,u>>>=r.extra,l-=r.extra,r.back+=r.extra}if(r.offset>r.dmax){t.msg="invalid distance too far back",r.mode=30;break}r.mode=25;case 25:if(0===h)break t;if(c=d-h,r.offset>c){if((c=r.offset-c)>r.whave&&r.sane){t.msg="invalid distance too far back",r.mode=30;break}p=c>r.wnext?(c-=r.wnext,r.wsize-c):r.wnext-c,c>r.length&&(c=r.length),m=r.window}else m=n,p=a-r.offset,c=r.length;for(h<c&&(c=h),h-=c,r.length-=c;n[a++]=m[p++],--c;);0===r.length&&(r.mode=21);break;case 26:if(0===h)break t;n[a++]=r.length,h--,r.mode=21;break;case 27:if(r.wrap){for(;l<32;){if(0===o)break t;o--,u|=i[s++]<<l,l+=8}if(d-=h,t.total_out+=d,r.total+=d,d&&(t.adler=r.check=r.flags?B(r.check,n,d,a-d):O(r.check,n,d,a-d)),d=h,(r.flags?u:L(u))!==r.check){t.msg="incorrect data check",r.mode=30;break}l=u=0}r.mode=28;case 28:if(r.wrap&&r.flags){for(;l<32;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(u!==(4294967295&r.total)){t.msg="incorrect length check",r.mode=30;break}l=u=0}r.mode=29;case 29:x=1;break t;case 30:x=-3;break t;case 31:return-4;case 32:default:return U}return t.next_out=a,t.avail_out=h,t.next_in=s,t.avail_in=o,r.hold=u,r.bits=l,(r.wsize||d!==t.avail_out&&r.mode<30&&(r.mode<27||4!==e))&&Z(t,t.output,t.next_out,d-t.avail_out)?(r.mode=31,-4):(f-=t.avail_in,d-=t.avail_out,t.total_in+=f,t.total_out+=d,r.total+=d,r.wrap&&d&&(t.adler=r.check=r.flags?B(r.check,n,d,t.next_out-d):O(r.check,n,d,t.next_out-d)),t.data_type=r.bits+(r.last?64:0)+(12===r.mode?128:0)+(20===r.mode||15===r.mode?256:0),(0==f&&0===d||4===e)&&x===N&&(x=-5),x)},r.inflateEnd=function(t){if(!t||!t.state)return U;var e=t.state;return e.window&&(e.window=null),t.state=null,N},r.inflateGetHeader=function(t,e){var r;return t&&t.state?0==(2&(r=t.state).wrap)?U:((r.head=e).done=!1,N):U},r.inflateSetDictionary=function(t,e){var r,i=e.length;return t&&t.state?0!==(r=t.state).wrap&&11!==r.mode?U:11===r.mode&&O(1,e,i,0)!==r.check?-3:Z(t,e,i,i)?(r.mode=31,-4):(r.havedict=1,N):U},r.inflateInfo="pako inflate (from Nodeca project)"},{"../utils/common":41,"./adler32":43,"./crc32":45,"./inffast":48,"./inftrees":50}],50:[function(t,e,r){"use strict";var D=t("../utils/common"),F=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],N=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],U=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],P=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];e.exports=function(t,e,r,i,n,s,a,o){var h,u,l,f,d,c,p,m,_,g=o.bits,b=0,v=0,y=0,w=0,k=0,x=0,S=0,z=0,C=0,E=0,A=null,I=0,O=new D.Buf16(16),B=new D.Buf16(16),R=null,T=0;for(b=0;b<=15;b++)O[b]=0;for(v=0;v<i;v++)O[e[r+v]]++;for(k=g,w=15;1<=w&&0===O[w];w--);if(w<k&&(k=w),0===w)return n[s++]=20971520,n[s++]=20971520,o.bits=1,0;for(y=1;y<w&&0===O[y];y++);for(k<y&&(k=y),b=z=1;b<=15;b++)if(z<<=1,(z-=O[b])<0)return-1;if(0<z&&(0===t||1!==w))return-1;for(B[1]=0,b=1;b<15;b++)B[b+1]=B[b]+O[b];for(v=0;v<i;v++)0!==e[r+v]&&(a[B[e[r+v]]++]=v);if(c=0===t?(A=R=a,19):1===t?(A=F,I-=257,R=N,T-=257,256):(A=U,R=P,-1),b=y,d=s,S=v=E=0,l=-1,f=(C=1<<(x=k))-1,1===t&&852<C||2===t&&592<C)return 1;for(;;){for(p=b-S,_=a[v]<c?(m=0,a[v]):a[v]>c?(m=R[T+a[v]],A[I+a[v]]):(m=96,0),h=1<<b-S,y=u=1<<x;n[d+(E>>S)+(u-=h)]=p<<24|m<<16|_|0,0!==u;);for(h=1<<b-1;E&h;)h>>=1;if(0!==h?(E&=h-1,E+=h):E=0,v++,0==--O[b]){if(b===w)break;b=e[r+a[v]]}if(k<b&&(E&f)!==l){for(0===S&&(S=k),d+=y,z=1<<(x=b-S);x+S<w&&!((z-=O[x+S])<=0);)x++,z<<=1;if(C+=1<<x,1===t&&852<C||2===t&&592<C)return 1;n[l=E&f]=k<<24|x<<16|d-s|0}}return 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for(this.push({data:r.fileRecord,meta:{percent:0}});this.contentBuffer.length;)this.push(this.contentBuffer.shift());this.currentFile=null},s.prototype.flush=function(){for(var t=this.bytesWritten,e=0;e<this.dirRecords.length;e++)this.push({data:this.dirRecords[e],meta:{percent:100}});var r=this.bytesWritten-t,i=function(t,e,r,i,n){var s=I.transformTo("string",n(i));return R.CENTRAL_DIRECTORY_END+"\0\0\0\0"+A(t,2)+A(t,2)+A(e,4)+A(r,4)+A(s.length,2)+s}(this.dirRecords.length,r,t,this.zipComment,this.encodeFileName);this.push({data:i,meta:{percent:100}})},s.prototype.prepareNextSource=function(){this.previous=this._sources.shift(),this.openedSource(this.previous.streamInfo),this.isPaused?this.previous.pause():this.previous.resume()},s.prototype.registerPrevious=function(t){this._sources.push(t);var e=this;return t.on("data",function(t){e.processChunk(t)}),t.on("end",function(){e.closedSource(e.previous.streamInfo),e._sources.length?e.prepareNextSource():e.end()}),t.on("error",function(t){e.error(t)}),this},s.prototype.resume=function(){return!!n.prototype.resume.call(this)&&(!this.previous&&this._sources.length?(this.prepareNextSource(),!0):this.previous||this._sources.length||this.generatedError?void 0:(this.end(),!0))},s.prototype.error=function(t){var e=this._sources;if(!n.prototype.error.call(this,t))return!1;for(var r=0;r<e.length;r++)try{e[r].error(t)}catch(t){}return!0},s.prototype.lock=function(){n.prototype.lock.call(this);for(var t=this._sources,e=0;e<t.length;e++)t[e].lock()},e.exports=s},{"../crc32":4,"../signature":23,"../stream/GenericWorker":28,"../utf8":31,"../utils":32}],9:[function(t,e,r){"use strict";var u=t("../compressions"),i=t("./ZipFileWorker");r.generateWorker=function(t,a,e){var o=new 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t}}(i.prototype=t("./object")).loadAsync=t("./load"),i.support=t("./support"),i.defaults=t("./defaults"),i.version="3.8.0",i.loadAsync=function(t,e){return(new i).loadAsync(t,e)},i.external=t("./external"),e.exports=i},{"./defaults":5,"./external":6,"./load":11,"./object":15,"./support":30}],11:[function(t,e,r){"use strict";var u=t("./utils"),n=t("./external"),i=t("./utf8"),s=t("./zipEntries"),a=t("./stream/Crc32Probe"),l=t("./nodejsUtils");function f(i){return new n.Promise(function(t,e){var r=i.decompressed.getContentWorker().pipe(new a);r.on("error",function(t){e(t)}).on("end",function(){r.streamInfo.crc32!==i.decompressed.crc32?e(new Error("Corrupted zip : CRC32 mismatch")):t()}).resume()})}e.exports=function(t,o){var h=this;return o=u.extend(o||{},{base64:!1,checkCRC32:!1,optimizedBinaryString:!1,createFolders:!1,decodeFileName:i.utf8decode}),l.isNode&&l.isStream(t)?n.Promise.reject(new Error("JSZip can't accept a stream when loading a zip file.")):u.prepareContent("the loaded zip 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i=this;t.on("data",function(t,e){i.push(t)||i._helper.pause(),r&&r(e)}).on("error",function(t){i.emit("error",t)}).on("end",function(){i.push(null)})}t("../utils").inherits(i,n),i.prototype._read=function(){this._helper.resume()},e.exports=i},{"../utils":32,"readable-stream":16}],14:[function(t,e,r){"use strict";e.exports={isNode:"undefined"!=typeof Buffer,newBufferFrom:function(t,e){if(Buffer.from&&Buffer.from!==Uint8Array.from)return Buffer.from(t,e);if("number"==typeof t)throw new Error('The "data" argument must not be a number');return new Buffer(t,e)},allocBuffer:function(t){if(Buffer.alloc)return Buffer.alloc(t);var e=new Buffer(t);return e.fill(0),e},isBuffer:function(t){return Buffer.isBuffer(t)},isStream:function(t){return t&&"function"==typeof t.on&&"function"==typeof t.pause&&"function"==typeof t.resume}}},{}],15:[function(t,e,r){"use strict";function s(t,e,r){var i,n=u.getTypeOf(e),s=u.extend(r||{},f);s.date=s.date||new 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n=t("./utf8"),u=t("./utils"),l=t("./stream/GenericWorker"),a=t("./stream/StreamHelper"),f=t("./defaults"),d=t("./compressedObject"),c=t("./zipObject"),o=t("./generate"),p=t("./nodejsUtils"),m=t("./nodejs/NodejsStreamInputAdapter"),_=function(t){"/"===t.slice(-1)&&(t=t.substring(0,t.length-1));var e=t.lastIndexOf("/");return 0<e?t.substring(0,e):""},g=function(t){return"/"!==t.slice(-1)&&(t+="/"),t},b=function(t,e){return e=void 0!==e?e:f.createFolders,t=g(t),this.files[t]||s.call(this,t,null,{dir:!0,createFolders:e}),this.files[t]};function h(t){return"[object RegExp]"===Object.prototype.toString.call(t)}var i={load:function(){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.")},forEach:function(t){var e,r,i;for(e in this.files)i=this.files[e],(r=e.slice(this.root.length,e.length))&&e.slice(0,this.root.length)===this.root&&t(r,i)},filter:function(r){var i=[];return this.forEach(function(t,e){r(t,e)&&i.push(e)}),i},file:function(t,e,r){if(1!==arguments.length)return t=this.root+t,s.call(this,t,e,r),this;if(h(t)){var i=t;return this.filter(function(t,e){return!e.dir&&i.test(t)})}var n=this.files[this.root+t];return n&&!n.dir?n:null},folder:function(r){if(!r)return this;if(h(r))return this.filter(function(t,e){return e.dir&&r.test(t)});var t=this.root+r,e=b.call(this,t),i=this.clone();return i.root=e.name,i},remove:function(r){r=this.root+r;var t=this.files[r];if(t||("/"!==r.slice(-1)&&(r+="/"),t=this.files[r]),t&&!t.dir)delete this.files[r];else for(var e=this.filter(function(t,e){return e.name.slice(0,r.length)===r}),i=0;i<e.length;i++)delete this.files[e[i].name];return this},generate:function(t){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.")},generateInternalStream:function(t){var 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e=t.charCodeAt(0),r=t.charCodeAt(1),i=t.charCodeAt(2),n=t.charCodeAt(3),s=this.readData(4);return e===s[0]&&r===s[1]&&i===s[2]&&n===s[3]},n.prototype.readData=function(t){if(this.checkOffset(t),0===t)return[];var e=this.data.slice(this.zero+this.index,this.zero+this.index+t);return this.index+=t,e},e.exports=n},{"../utils":32,"./DataReader":18}],18:[function(t,e,r){"use strict";var i=t("../utils");function n(t){this.data=t,this.length=t.length,this.index=0,this.zero=0}n.prototype={checkOffset:function(t){this.checkIndex(this.index+t)},checkIndex:function(t){if(this.length<this.zero+t||t<0)throw new Error("End of data reached (data length = "+this.length+", asked index = "+t+"). 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i=t("../utils"),n=t("../support"),s=t("./ArrayReader"),a=t("./StringReader"),o=t("./NodeBufferReader"),h=t("./Uint8ArrayReader");e.exports=function(t){var e=i.getTypeOf(t);return i.checkSupport(e),"string"!==e||n.uint8array?"nodebuffer"===e?new o(t):n.uint8array?new h(i.transformTo("uint8array",t)):new s(i.transformTo("array",t)):new a(t)}},{"../support":30,"../utils":32,"./ArrayReader":17,"./NodeBufferReader":19,"./StringReader":20,"./Uint8ArrayReader":21}],23:[function(t,e,r){"use strict";r.LOCAL_FILE_HEADER="PK",r.CENTRAL_FILE_HEADER="PK",r.CENTRAL_DIRECTORY_END="PK",r.ZIP64_CENTRAL_DIRECTORY_LOCATOR="PK",r.ZIP64_CENTRAL_DIRECTORY_END="PK",r.DATA_DESCRIPTOR="PK\b"},{}],24:[function(t,e,r){"use strict";var i=t("./GenericWorker"),n=t("../utils");function s(t){i.call(this,"ConvertWorker to 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i=t("../utils"),n=t("./GenericWorker");function s(t){n.call(this,"DataWorker");var e=this;this.dataIsReady=!1,this.index=0,this.max=0,this.data=null,this.type="",this._tickScheduled=!1,t.then(function(t){e.dataIsReady=!0,e.data=t,e.max=t&&t.length||0,e.type=i.getTypeOf(t),e.isPaused||e._tickAndRepeat()},function(t){e.error(t)})}i.inherits(s,n),s.prototype.cleanUp=function(){n.prototype.cleanUp.call(this),this.data=null},s.prototype.resume=function(){return!!n.prototype.resume.call(this)&&(!this._tickScheduled&&this.dataIsReady&&(this._tickScheduled=!0,i.delay(this._tickAndRepeat,[],this)),!0)},s.prototype._tickAndRepeat=function(){this._tickScheduled=!1,this.isPaused||this.isFinished||(this._tick(),this.isFinished||(i.delay(this._tickAndRepeat,[],this),this._tickScheduled=!0))},s.prototype._tick=function(){if(this.isPaused||this.isFinished)return!1;var t=null,e=Math.min(this.max,this.index+16384);if(this.index>=this.max)return 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'"+this+"' has already been used.");this.streamInfo=t.streamInfo,this.mergeStreamInfo(),this.previous=t;var e=this;return t.on("data",function(t){e.processChunk(t)}),t.on("end",function(){e.end()}),t.on("error",function(t){e.error(t)}),this},pause:function(){return!this.isPaused&&!this.isFinished&&(this.isPaused=!0,this.previous&&this.previous.pause(),!0)},resume:function(){if(!this.isPaused||this.isFinished)return!1;var t=this.isPaused=!1;return this.generatedError&&(this.error(this.generatedError),t=!0),this.previous&&this.previous.resume(),!t},flush:function(){},processChunk:function(t){this.push(t)},withStreamInfo:function(t,e){return this.extraStreamInfo[t]=e,this.mergeStreamInfo(),this},mergeStreamInfo:function(){for(var t in this.extraStreamInfo)this.extraStreamInfo.hasOwnProperty(t)&&(this.streamInfo[t]=this.extraStreamInfo[t])},lock:function(){if(this.isLocked)throw new Error("The stream '"+this+"' has already been used.");this.isLocked=!0,this.previous&&this.previous.lock()},toString:function(){var t="Worker "+this.name;return this.previous?this.previous+" -> "+t:t}},e.exports=i},{}],29:[function(t,e,r){"use strict";var h=t("../utils"),n=t("./ConvertWorker"),s=t("./GenericWorker"),u=t("../base64"),i=t("../support"),a=t("../external"),o=null;if(i.nodestream)try{o=t("../nodejs/NodejsStreamOutputAdapter")}catch(t){}function l(t,o){return new a.Promise(function(e,r){var i=[],n=t._internalType,s=t._outputType,a=t._mimeType;t.on("data",function(t,e){i.push(t),o&&o(e)}).on("error",function(t){i=[],r(t)}).on("end",function(){try{var t=function(t,e,r){switch(t){case"blob":return h.newBlob(h.transformTo("arraybuffer",e),r);case"base64":return u.encode(e);default:return h.transformTo(t,e)}}(s,function(t,e){var r,i=0,n=null,s=0;for(r=0;r<e.length;r++)s+=e[r].length;switch(t){case"string":return e.join("");case"array":return Array.prototype.concat.apply([],e);case"uint8array":for(n=new Uint8Array(s),r=0;r<e.length;r++)n.set(e[r],i),i+=e[r].length;return n;case"nodebuffer":return Buffer.concat(e);default:throw new Error("concat : unsupported type '"+t+"'")}}(n,i),a);e(t)}catch(t){r(t)}i=[]}).resume()})}function f(t,e,r){var i=e;switch(e){case"blob":case"arraybuffer":i="uint8array";break;case"base64":i="string"}try{this._internalType=i,this._outputType=e,this._mimeType=r,h.checkSupport(i),this._worker=t.pipe(new n(i)),t.lock()}catch(t){this._worker=new s("error"),this._worker.error(t)}}f.prototype={accumulate:function(t){return l(this,t)},on:function(t,e){var r=this;return"data"===t?this._worker.on(t,function(t){e.call(r,t.data,t.meta)}):this._worker.on(t,function(){h.delay(e,arguments,r)}),this},resume:function(){return h.delay(this._worker.resume,[],this._worker),this},pause:function(){return this._worker.pause(),this},toNodejsStream:function(t){if(h.checkSupport("nodestream"),"nodebuffer"!==this._outputType)throw new Error(this._outputType+" is not supported by this method");return new o(this,{objectMode:"nodebuffer"!==this._outputType},t)}},e.exports=f},{"../base64":1,"../external":6,"../nodejs/NodejsStreamOutputAdapter":13,"../support":30,"../utils":32,"./ConvertWorker":24,"./GenericWorker":28}],30:[function(t,e,r){"use strict";if(r.base64=!0,r.array=!0,r.string=!0,r.arraybuffer="undefined"!=typeof ArrayBuffer&&"undefined"!=typeof Uint8Array,r.nodebuffer="undefined"!=typeof Buffer,r.uint8array="undefined"!=typeof Uint8Array,"undefined"==typeof ArrayBuffer)r.blob=!1;else{var i=new ArrayBuffer(0);try{r.blob=0===new Blob([i],{type:"application/zip"}).size}catch(t){try{var n=new(self.BlobBuilder||self.WebKitBlobBuilder||self.MozBlobBuilder||self.MSBlobBuilder);n.append(i),r.blob=0===n.getBlob("application/zip").size}catch(t){r.blob=!1}}}try{r.nodestream=!!t("readable-stream").Readable}catch(t){r.nodestream=!1}},{"readable-stream":16}],31:[function(t,e,s){"use strict";for(var o=t("./utils"),h=t("./support"),r=t("./nodejsUtils"),i=t("./stream/GenericWorker"),u=new Array(256),n=0;n<256;n++)u[n]=252<=n?6:248<=n?5:240<=n?4:224<=n?3:192<=n?2:1;u[254]=u[254]=1;function a(){i.call(this,"utf-8 decode"),this.leftOver=null}function l(){i.call(this,"utf-8 encode")}s.utf8encode=function(t){return h.nodebuffer?r.newBufferFrom(t,"utf-8"):function(t){var e,r,i,n,s,a=t.length,o=0;for(n=0;n<a;n++)55296==(64512&(r=t.charCodeAt(n)))&&n+1<a&&56320==(64512&(i=t.charCodeAt(n+1)))&&(r=65536+(r-55296<<10)+(i-56320),n++),o+=r<128?1:r<2048?2:r<65536?3:4;for(e=h.uint8array?new Uint8Array(o):new Array(o),n=s=0;s<o;n++)55296==(64512&(r=t.charCodeAt(n)))&&n+1<a&&56320==(64512&(i=t.charCodeAt(n+1)))&&(r=65536+(r-55296<<10)+(i-56320),n++),r<128?e[s++]=r:(r<2048?e[s++]=192|r>>>6:(r<65536?e[s++]=224|r>>>12:(e[s++]=240|r>>>18,e[s++]=128|r>>>12&63),e[s++]=128|r>>>6&63),e[s++]=128|63&r);return e}(t)},s.utf8decode=function(t){return h.nodebuffer?o.transformTo("nodebuffer",t).toString("utf-8"):function(t){var e,r,i,n,s=t.length,a=new Array(2*s);for(e=r=0;e<s;)if((i=t[e++])<128)a[r++]=i;else if(4<(n=u[i]))a[r++]=65533,e+=n-1;else{for(i&=2===n?31:3===n?15:7;1<n&&e<s;)i=i<<6|63&t[e++],n--;1<n?a[r++]=65533:i<65536?a[r++]=i:(i-=65536,a[r++]=55296|i>>10&1023,a[r++]=56320|1023&i)}return a.length!==r&&(a.subarray?a=a.subarray(0,r):a.length=r),o.applyFromCharCode(a)}(t=o.transformTo(h.uint8array?"uint8array":"array",t))},o.inherits(a,i),a.prototype.processChunk=function(t){var e=o.transformTo(h.uint8array?"uint8array":"array",t.data);if(this.leftOver&&this.leftOver.length){if(h.uint8array){var r=e;(e=new Uint8Array(r.length+this.leftOver.length)).set(this.leftOver,0),e.set(r,this.leftOver.length)}else e=this.leftOver.concat(e);this.leftOver=null}var i=function(t,e){var r;for((e=e||t.length)>t.length&&(e=t.length),r=e-1;0<=r&&128==(192&t[r]);)r--;return r<0?e:0===r?e:r+u[t[r]]>e?r:e}(e),n=e;i!==e.length&&(h.uint8array?(n=e.subarray(0,i),this.leftOver=e.subarray(i,e.length)):(n=e.slice(0,i),this.leftOver=e.slice(i,e.length))),this.push({data:s.utf8decode(n),meta:t.meta})},a.prototype.flush=function(){this.leftOver&&this.leftOver.length&&(this.push({data:s.utf8decode(this.leftOver),meta:{}}),this.leftOver=null)},s.Utf8DecodeWorker=a,o.inherits(l,i),l.prototype.processChunk=function(t){this.push({data:s.utf8encode(t.data),meta:t.meta})},s.Utf8EncodeWorker=l},{"./nodejsUtils":14,"./stream/GenericWorker":28,"./support":30,"./utils":32}],32:[function(t,e,a){"use strict";var o=t("./support"),h=t("./base64"),r=t("./nodejsUtils"),i=t("set-immediate-shim"),u=t("./external");function n(t){return t}function l(t,e){for(var r=0;r<t.length;++r)e[r]=255&t.charCodeAt(r);return e}a.newBlob=function(e,r){a.checkSupport("blob");try{return new Blob([e],{type:r})}catch(t){try{var i=new(self.BlobBuilder||self.WebKitBlobBuilder||self.MozBlobBuilder||self.MSBlobBuilder);return i.append(e),i.getBlob(r)}catch(t){throw new Error("Bug : can't construct the Blob.")}}};var s={stringifyByChunk:function(t,e,r){var i=[],n=0,s=t.length;if(s<=r)return String.fromCharCode.apply(null,t);for(;n<s;)"array"===e||"nodebuffer"===e?i.push(String.fromCharCode.apply(null,t.slice(n,Math.min(n+r,s)))):i.push(String.fromCharCode.apply(null,t.subarray(n,Math.min(n+r,s)))),n+=r;return i.join("")},stringifyByChar:function(t){for(var e="",r=0;r<t.length;r++)e+=String.fromCharCode(t[r]);return e},applyCanBeUsed:{uint8array:function(){try{return o.uint8array&&1===String.fromCharCode.apply(null,new Uint8Array(1)).length}catch(t){return!1}}(),nodebuffer:function(){try{return o.nodebuffer&&1===String.fromCharCode.apply(null,r.allocBuffer(1)).length}catch(t){return!1}}()}};function f(t){var e=65536,r=a.getTypeOf(t),i=!0;if("uint8array"===r?i=s.applyCanBeUsed.uint8array:"nodebuffer"===r&&(i=s.applyCanBeUsed.nodebuffer),i)for(;1<e;)try{return s.stringifyByChunk(t,r,e)}catch(t){e=Math.floor(e/2)}return s.stringifyByChar(t)}function d(t,e){for(var r=0;r<t.length;r++)e[r]=t[r];return e}a.applyFromCharCode=f;var c={};c.string={string:n,array:function(t){return l(t,new Array(t.length))},arraybuffer:function(t){return c.string.uint8array(t).buffer},uint8array:function(t){return l(t,new Uint8Array(t.length))},nodebuffer:function(t){return l(t,r.allocBuffer(t.length))}},c.array={string:f,array:n,arraybuffer:function(t){return new Uint8Array(t).buffer},uint8array:function(t){return new Uint8Array(t)},nodebuffer:function(t){return r.newBufferFrom(t)}},c.arraybuffer={string:function(t){return f(new Uint8Array(t))},array:function(t){return d(new Uint8Array(t),new Array(t.byteLength))},arraybuffer:n,uint8array:function(t){return new Uint8Array(t)},nodebuffer:function(t){return r.newBufferFrom(new Uint8Array(t))}},c.uint8array={string:f,array:function(t){return d(t,new Array(t.length))},arraybuffer:function(t){return t.buffer},uint8array:n,nodebuffer:function(t){return r.newBufferFrom(t)}},c.nodebuffer={string:f,array:function(t){return d(t,new Array(t.length))},arraybuffer:function(t){return c.nodebuffer.uint8array(t).buffer},uint8array:function(t){return d(t,new Uint8Array(t.length))},nodebuffer:n},a.transformTo=function(t,e){if(e=e||"",!t)return e;a.checkSupport(t);var r=a.getTypeOf(e);return c[r][t](e)},a.resolve=function(t){for(var e=t.split("/"),r=[],i=0;i<e.length;i++){var n=e[i];"."===n||""===n&&0!==i&&i!==e.length-1||(".."===n?r.pop():r.push(n))}return r.join("/")},a.getTypeOf=function(t){return"string"==typeof t?"string":"[object Array]"===Object.prototype.toString.call(t)?"array":o.nodebuffer&&r.isBuffer(t)?"nodebuffer":o.uint8array&&t instanceof Uint8Array?"uint8array":o.arraybuffer&&t instanceof ArrayBuffer?"arraybuffer":void 0},a.checkSupport=function(t){if(!o[t.toLowerCase()])throw new Error(t+" is not supported by this platform")},a.MAX_VALUE_16BITS=65535,a.MAX_VALUE_32BITS=-1,a.pretty=function(t){var e,r,i="";for(r=0;r<(t||"").length;r++)i+="\\x"+((e=t.charCodeAt(r))<16?"0":"")+e.toString(16).toUpperCase();return i},a.delay=function(t,e,r){i(function(){t.apply(r||null,e||[])})},a.inherits=function(t,e){function r(){}r.prototype=e.prototype,t.prototype=new r},a.extend=function(){var t,e,r={};for(t=0;t<arguments.length;t++)for(e in arguments[t])arguments[t].hasOwnProperty(e)&&void 0===r[e]&&(r[e]=arguments[t][e]);return r},a.prepareContent=function(r,t,i,n,s){return u.Promise.resolve(t).then(function(i){return o.blob&&(i instanceof Blob||-1!==["[object File]","[object Blob]"].indexOf(Object.prototype.toString.call(i)))&&"undefined"!=typeof FileReader?new u.Promise(function(e,r){var t=new FileReader;t.onload=function(t){e(t.target.result)},t.onerror=function(t){r(t.target.error)},t.readAsArrayBuffer(i)}):i}).then(function(t){var e=a.getTypeOf(t);return e?("arraybuffer"===e?t=a.transformTo("uint8array",t):"string"===e&&(s?t=h.decode(t):i&&!0!==n&&(t=function(t){return l(t,o.uint8array?new Uint8Array(t.length):new Array(t.length))}(t))),t):u.Promise.reject(new Error("Can't read the data of '"+r+"'. Is it in a supported JavaScript type (String, Blob, ArrayBuffer, etc) ?"))})}},{"./base64":1,"./external":6,"./nodejsUtils":14,"./support":30,"set-immediate-shim":54}],33:[function(t,e,r){"use strict";var i=t("./reader/readerFor"),n=t("./utils"),s=t("./signature"),a=t("./zipEntry"),o=(t("./utf8"),t("./support"));function h(t){this.files=[],this.loadOptions=t}h.prototype={checkSignature:function(t){if(!this.reader.readAndCheckSignature(t)){this.reader.index-=4;var e=this.reader.readString(4);throw new Error("Corrupted zip or bug: unexpected signature ("+n.pretty(e)+", expected "+n.pretty(t)+")")}},isSignature:function(t,e){var r=this.reader.index;this.reader.setIndex(t);var i=this.reader.readString(4)===e;return this.reader.setIndex(r),i},readBlockEndOfCentral:function(){this.diskNumber=this.reader.readInt(2),this.diskWithCentralDirStart=this.reader.readInt(2),this.centralDirRecordsOnThisDisk=this.reader.readInt(2),this.centralDirRecords=this.reader.readInt(2),this.centralDirSize=this.reader.readInt(4),this.centralDirOffset=this.reader.readInt(4),this.zipCommentLength=this.reader.readInt(2);var t=this.reader.readData(this.zipCommentLength),e=o.uint8array?"uint8array":"array",r=n.transformTo(e,t);this.zipComment=this.loadOptions.decodeFileName(r)},readBlockZip64EndOfCentral:function(){this.zip64EndOfCentralSize=this.reader.readInt(8),this.reader.skip(4),this.diskNumber=this.reader.readInt(4),this.diskWithCentralDirStart=this.reader.readInt(4),this.centralDirRecordsOnThisDisk=this.reader.readInt(8),this.centralDirRecords=this.reader.readInt(8),this.centralDirSize=this.reader.readInt(8),this.centralDirOffset=this.reader.readInt(8),this.zip64ExtensibleData={};for(var t,e,r,i=this.zip64EndOfCentralSize-44;0<i;)t=this.reader.readInt(2),e=this.reader.readInt(4),r=this.reader.readData(e),this.zip64ExtensibleData[t]={id:t,length:e,value:r}},readBlockZip64EndOfCentralLocator:function(){if(this.diskWithZip64CentralDirStart=this.reader.readInt(4),this.relativeOffsetEndOfZip64CentralDir=this.reader.readInt(8),this.disksCount=this.reader.readInt(4),1<this.disksCount)throw new Error("Multi-volumes zip are not supported")},readLocalFiles:function(){var t,e;for(t=0;t<this.files.length;t++)e=this.files[t],this.reader.setIndex(e.localHeaderOffset),this.checkSignature(s.LOCAL_FILE_HEADER),e.readLocalPart(this.reader),e.handleUTF8(),e.processAttributes()},readCentralDir:function(){var t;for(this.reader.setIndex(this.centralDirOffset);this.reader.readAndCheckSignature(s.CENTRAL_FILE_HEADER);)(t=new a({zip64:this.zip64},this.loadOptions)).readCentralPart(this.reader),this.files.push(t);if(this.centralDirRecords!==this.files.length&&0!==this.centralDirRecords&&0===this.files.length)throw new Error("Corrupted zip or bug: expected "+this.centralDirRecords+" records in central dir, got "+this.files.length)},readEndOfCentral:function(){var t=this.reader.lastIndexOfSignature(s.CENTRAL_DIRECTORY_END);if(t<0)throw!this.isSignature(0,s.LOCAL_FILE_HEADER)?new Error("Can't find end of central directory : is this a zip file ? If it is, see https://stuk.github.io/jszip/documentation/howto/read_zip.html"):new Error("Corrupted zip: can't find end of central directory");this.reader.setIndex(t);var e=t;if(this.checkSignature(s.CENTRAL_DIRECTORY_END),this.readBlockEndOfCentral(),this.diskNumber===n.MAX_VALUE_16BITS||this.diskWithCentralDirStart===n.MAX_VALUE_16BITS||this.centralDirRecordsOnThisDisk===n.MAX_VALUE_16BITS||this.centralDirRecords===n.MAX_VALUE_16BITS||this.centralDirSize===n.MAX_VALUE_32BITS||this.centralDirOffset===n.MAX_VALUE_32BITS){if(this.zip64=!0,(t=this.reader.lastIndexOfSignature(s.ZIP64_CENTRAL_DIRECTORY_LOCATOR))<0)throw new Error("Corrupted zip: can't find the ZIP64 end of central directory locator");if(this.reader.setIndex(t),this.checkSignature(s.ZIP64_CENTRAL_DIRECTORY_LOCATOR),this.readBlockZip64EndOfCentralLocator(),!this.isSignature(this.relativeOffsetEndOfZip64CentralDir,s.ZIP64_CENTRAL_DIRECTORY_END)&&(this.relativeOffsetEndOfZip64CentralDir=this.reader.lastIndexOfSignature(s.ZIP64_CENTRAL_DIRECTORY_END),this.relativeOffsetEndOfZip64CentralDir<0))throw new Error("Corrupted zip: can't find the ZIP64 end of central directory");this.reader.setIndex(this.relativeOffsetEndOfZip64CentralDir),this.checkSignature(s.ZIP64_CENTRAL_DIRECTORY_END),this.readBlockZip64EndOfCentral()}var r=this.centralDirOffset+this.centralDirSize;this.zip64&&(r+=20,r+=12+this.zip64EndOfCentralSize);var i=e-r;if(0<i)this.isSignature(e,s.CENTRAL_FILE_HEADER)||(this.reader.zero=i);else if(i<0)throw new Error("Corrupted zip: missing "+Math.abs(i)+" bytes.")},prepareReader:function(t){this.reader=i(t)},load:function(t){this.prepareReader(t),this.readEndOfCentral(),this.readCentralDir(),this.readLocalFiles()}},e.exports=h},{"./reader/readerFor":22,"./signature":23,"./support":30,"./utf8":31,"./utils":32,"./zipEntry":34}],34:[function(t,e,r){"use strict";var i=t("./reader/readerFor"),s=t("./utils"),n=t("./compressedObject"),a=t("./crc32"),o=t("./utf8"),h=t("./compressions"),u=t("./support");function l(t,e){this.options=t,this.loadOptions=e}l.prototype={isEncrypted:function(){return 1==(1&this.bitFlag)},useUTF8:function(){return 2048==(2048&this.bitFlag)},readLocalPart:function(t){var e,r;if(t.skip(22),this.fileNameLength=t.readInt(2),r=t.readInt(2),this.fileName=t.readData(this.fileNameLength),t.skip(r),-1===this.compressedSize||-1===this.uncompressedSize)throw new Error("Bug or corrupted zip : didn't get enough information from the central directory (compressedSize === -1 || uncompressedSize === -1)");if(null===(e=function(t){for(var e in h)if(h.hasOwnProperty(e)&&h[e].magic===t)return h[e];return null}(this.compressionMethod)))throw new Error("Corrupted zip : compression "+s.pretty(this.compressionMethod)+" unknown (inner file : "+s.transformTo("string",this.fileName)+")");this.decompressed=new n(this.compressedSize,this.uncompressedSize,this.crc32,e,t.readData(this.compressedSize))},readCentralPart:function(t){this.versionMadeBy=t.readInt(2),t.skip(2),this.bitFlag=t.readInt(2),this.compressionMethod=t.readString(2),this.date=t.readDate(),this.crc32=t.readInt(4),this.compressedSize=t.readInt(4),this.uncompressedSize=t.readInt(4);var e=t.readInt(2);if(this.extraFieldsLength=t.readInt(2),this.fileCommentLength=t.readInt(2),this.diskNumberStart=t.readInt(2),this.internalFileAttributes=t.readInt(2),this.externalFileAttributes=t.readInt(4),this.localHeaderOffset=t.readInt(4),this.isEncrypted())throw new Error("Encrypted zip are not supported");t.skip(e),this.readExtraFields(t),this.parseZIP64ExtraField(t),this.fileComment=t.readData(this.fileCommentLength)},processAttributes:function(){this.unixPermissions=null,this.dosPermissions=null;var t=this.versionMadeBy>>8;this.dir=!!(16&this.externalFileAttributes),0==t&&(this.dosPermissions=63&this.externalFileAttributes),3==t&&(this.unixPermissions=this.externalFileAttributes>>16&65535),this.dir||"/"!==this.fileNameStr.slice(-1)||(this.dir=!0)},parseZIP64ExtraField:function(t){if(this.extraFields[1]){var e=i(this.extraFields[1].value);this.uncompressedSize===s.MAX_VALUE_32BITS&&(this.uncompressedSize=e.readInt(8)),this.compressedSize===s.MAX_VALUE_32BITS&&(this.compressedSize=e.readInt(8)),this.localHeaderOffset===s.MAX_VALUE_32BITS&&(this.localHeaderOffset=e.readInt(8)),this.diskNumberStart===s.MAX_VALUE_32BITS&&(this.diskNumberStart=e.readInt(4))}},readExtraFields:function(t){var e,r,i,n=t.index+this.extraFieldsLength;for(this.extraFields||(this.extraFields={});t.index+4<n;)e=t.readInt(2),r=t.readInt(2),i=t.readData(r),this.extraFields[e]={id:e,length:r,value:i};t.setIndex(n)},handleUTF8:function(){var t=u.uint8array?"uint8array":"array";if(this.useUTF8())this.fileNameStr=o.utf8decode(this.fileName),this.fileCommentStr=o.utf8decode(this.fileComment);else{var e=this.findExtraFieldUnicodePath();if(null!==e)this.fileNameStr=e;else{var r=s.transformTo(t,this.fileName);this.fileNameStr=this.loadOptions.decodeFileName(r)}var i=this.findExtraFieldUnicodeComment();if(null!==i)this.fileCommentStr=i;else{var n=s.transformTo(t,this.fileComment);this.fileCommentStr=this.loadOptions.decodeFileName(n)}}},findExtraFieldUnicodePath:function(){var t=this.extraFields[28789];if(t){var e=i(t.value);return 1!==e.readInt(1)?null:a(this.fileName)!==e.readInt(4)?null:o.utf8decode(e.readData(t.length-5))}return null},findExtraFieldUnicodeComment:function(){var t=this.extraFields[25461];if(t){var e=i(t.value);return 1!==e.readInt(1)?null:a(this.fileComment)!==e.readInt(4)?null:o.utf8decode(e.readData(t.length-5))}return null}},e.exports=l},{"./compressedObject":2,"./compressions":3,"./crc32":4,"./reader/readerFor":22,"./support":30,"./utf8":31,"./utils":32}],35:[function(t,e,r){"use strict";function i(t,e,r){this.name=t,this.dir=r.dir,this.date=r.date,this.comment=r.comment,this.unixPermissions=r.unixPermissions,this.dosPermissions=r.dosPermissions,this._data=e,this._dataBinary=r.binary,this.options={compression:r.compression,compressionOptions:r.compressionOptions}}var s=t("./stream/StreamHelper"),n=t("./stream/DataWorker"),a=t("./utf8"),o=t("./compressedObject"),h=t("./stream/GenericWorker");i.prototype={internalStream:function(t){var e=null,r="string";try{if(!t)throw new Error("No output type specified.");var i="string"===(r=t.toLowerCase())||"text"===r;"binarystring"!==r&&"text"!==r||(r="string"),e=this._decompressWorker();var n=!this._dataBinary;n&&!i&&(e=e.pipe(new a.Utf8EncodeWorker)),!n&&i&&(e=e.pipe(new a.Utf8DecodeWorker))}catch(t){(e=new h("error")).error(t)}return new s(e,r,"")},async:function(t,e){return this.internalStream(t).accumulate(e)},nodeStream:function(t,e){return this.internalStream(t||"nodebuffer").toNodejsStream(e)},_compressWorker:function(t,e){if(this._data instanceof o&&this._data.compression.magic===t.magic)return this._data.getCompressedWorker();var r=this._decompressWorker();return this._dataBinary||(r=r.pipe(new a.Utf8EncodeWorker)),o.createWorkerFrom(r,t,e)},_decompressWorker:function(){return this._data instanceof o?this._data.getContentWorker():this._data instanceof h?this._data:new n(this._data)}};for(var u=["asText","asBinary","asNodeBuffer","asUint8Array","asArrayBuffer"],l=function(){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade 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r,i;;){if(t.lookahead<z){if(j(t),t.lookahead<z&&e===l)return A;if(0===t.lookahead)break}if(r=0,t.lookahead>=x&&(t.ins_h=(t.ins_h<<t.hash_shift^t.window[t.strstart+x-1])&t.hash_mask,r=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart),0!==r&&t.strstart-r<=t.w_size-z&&(t.match_length=L(t,r)),t.match_length>=x)if(i=u._tr_tally(t,t.strstart-t.match_start,t.match_length-x),t.lookahead-=t.match_length,t.match_length<=t.max_lazy_match&&t.lookahead>=x){for(t.match_length--;t.strstart++,t.ins_h=(t.ins_h<<t.hash_shift^t.window[t.strstart+x-1])&t.hash_mask,r=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart,0!=--t.match_length;);t.strstart++}else t.strstart+=t.match_length,t.match_length=0,t.ins_h=t.window[t.strstart],t.ins_h=(t.ins_h<<t.hash_shift^t.window[t.strstart+1])&t.hash_mask;else i=u._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++;if(i&&(N(t,!1),0===t.strm.avail_out))return A}return t.insert=t.strstart<x-1?t.strstart:x-1,e===f?(N(t,!0),0===t.strm.avail_out?O:B):t.last_lit&&(N(t,!1),0===t.strm.avail_out)?A:I}function W(t,e){for(var r,i,n;;){if(t.lookahead<z){if(j(t),t.lookahead<z&&e===l)return 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if(t.match_available){if((i=u._tr_tally(t,0,t.window[t.strstart-1]))&&N(t,!1),t.strstart++,t.lookahead--,0===t.strm.avail_out)return A}else t.match_available=1,t.strstart++,t.lookahead--}return t.match_available&&(i=u._tr_tally(t,0,t.window[t.strstart-1]),t.match_available=0),t.insert=t.strstart<x-1?t.strstart:x-1,e===f?(N(t,!0),0===t.strm.avail_out?O:B):t.last_lit&&(N(t,!1),0===t.strm.avail_out)?A:I}function M(t,e,r,i,n){this.good_length=t,this.max_lazy=e,this.nice_length=r,this.max_chain=i,this.func=n}function H(){this.strm=null,this.status=0,this.pending_buf=null,this.pending_buf_size=0,this.pending_out=0,this.pending=0,this.wrap=0,this.gzhead=null,this.gzindex=0,this.method=v,this.last_flush=-1,this.w_size=0,this.w_bits=0,this.w_mask=0,this.window=null,this.window_size=0,this.prev=null,this.head=null,this.ins_h=0,this.hash_size=0,this.hash_bits=0,this.hash_mask=0,this.hash_shift=0,this.block_start=0,this.match_length=0,this.prev_match=0,this.match_available=0,this.strstart=0,this.match_start=0,this.lookahead=0,this.prev_length=0,this.max_chain_length=0,this.max_lazy_match=0,this.level=0,this.strategy=0,this.good_match=0,this.nice_match=0,this.dyn_ltree=new d.Buf16(2*w),this.dyn_dtree=new d.Buf16(2*(2*a+1)),this.bl_tree=new d.Buf16(2*(2*o+1)),D(this.dyn_ltree),D(this.dyn_dtree),D(this.bl_tree),this.l_desc=null,this.d_desc=null,this.bl_desc=null,this.bl_count=new d.Buf16(k+1),this.heap=new d.Buf16(2*s+1),D(this.heap),this.heap_len=0,this.heap_max=0,this.depth=new d.Buf16(2*s+1),D(this.depth),this.l_buf=0,this.lit_bufsize=0,this.last_lit=0,this.d_buf=0,this.opt_len=0,this.static_len=0,this.matches=0,this.insert=0,this.bi_buf=0,this.bi_valid=0}function G(t){var e;return t&&t.state?(t.total_in=t.total_out=0,t.data_type=n,(e=t.state).pending=0,e.pending_out=0,e.wrap<0&&(e.wrap=-e.wrap),e.status=e.wrap?C:E,t.adler=2===e.wrap?0:1,e.last_flush=l,u._tr_init(e),m):R(t,_)}function K(t){var e=G(t);return e===m&&function(t){t.window_size=2*t.w_size,D(t.head),t.max_lazy_match=h[t.level].max_lazy,t.good_match=h[t.level].good_length,t.nice_match=h[t.level].nice_length,t.max_chain_length=h[t.level].max_chain,t.strstart=0,t.block_start=0,t.lookahead=0,t.insert=0,t.match_length=t.prev_length=x-1,t.match_available=0,t.ins_h=0}(t.state),e}function Y(t,e,r,i,n,s){if(!t)return _;var a=1;if(e===g&&(e=6),i<0?(a=0,i=-i):15<i&&(a=2,i-=16),n<1||y<n||r!==v||i<8||15<i||e<0||9<e||s<0||b<s)return R(t,_);8===i&&(i=9);var o=new H;return(t.state=o).strm=t,o.wrap=a,o.gzhead=null,o.w_bits=i,o.w_size=1<<o.w_bits,o.w_mask=o.w_size-1,o.hash_bits=n+7,o.hash_size=1<<o.hash_bits,o.hash_mask=o.hash_size-1,o.hash_shift=~~((o.hash_bits+x-1)/x),o.window=new d.Buf8(2*o.w_size),o.head=new d.Buf16(o.hash_size),o.prev=new d.Buf16(o.w_size),o.lit_bufsize=1<<n+6,o.pending_buf_size=4*o.lit_bufsize,o.pending_buf=new d.Buf8(o.pending_buf_size),o.d_buf=1*o.lit_bufsize,o.l_buf=3*o.lit_bufsize,o.level=e,o.strategy=s,o.method=r,K(t)}h=[new M(0,0,0,0,function(t,e){var r=65535;for(r>t.pending_buf_size-5&&(r=t.pending_buf_size-5);;){if(t.lookahead<=1){if(j(t),0===t.lookahead&&e===l)return A;if(0===t.lookahead)break}t.strstart+=t.lookahead,t.lookahead=0;var i=t.block_start+r;if((0===t.strstart||t.strstart>=i)&&(t.lookahead=t.strstart-i,t.strstart=i,N(t,!1),0===t.strm.avail_out))return A;if(t.strstart-t.block_start>=t.w_size-z&&(N(t,!1),0===t.strm.avail_out))return A}return t.insert=0,e===f?(N(t,!0),0===t.strm.avail_out?O:B):(t.strstart>t.block_start&&(N(t,!1),t.strm.avail_out),A)}),new M(4,4,8,4,Z),new M(4,5,16,8,Z),new M(4,6,32,32,Z),new M(4,4,16,16,W),new M(8,16,32,32,W),new M(8,16,128,128,W),new M(8,32,128,256,W),new M(32,128,258,1024,W),new M(32,258,258,4096,W)],r.deflateInit=function(t,e){return Y(t,e,v,15,8,0)},r.deflateInit2=Y,r.deflateReset=K,r.deflateResetKeep=G,r.deflateSetHeader=function(t,e){return t&&t.state?2!==t.state.wrap?_:(t.state.gzhead=e,m):_},r.deflate=function(t,e){var r,i,n,s;if(!t||!t.state||5<e||e<0)return t?R(t,_):_;if(i=t.state,!t.output||!t.input&&0!==t.avail_in||666===i.status&&e!==f)return R(t,0===t.avail_out?-5:_);if(i.strm=t,r=i.last_flush,i.last_flush=e,i.status===C)if(2===i.wrap)t.adler=0,U(i,31),U(i,139),U(i,8),i.gzhead?(U(i,(i.gzhead.text?1:0)+(i.gzhead.hcrc?2:0)+(i.gzhead.extra?4:0)+(i.gzhead.name?8:0)+(i.gzhead.comment?16:0)),U(i,255&i.gzhead.time),U(i,i.gzhead.time>>8&255),U(i,i.gzhead.time>>16&255),U(i,i.gzhead.time>>24&255),U(i,9===i.level?2:2<=i.strategy||i.level<2?4:0),U(i,255&i.gzhead.os),i.gzhead.extra&&i.gzhead.extra.length&&(U(i,255&i.gzhead.extra.length),U(i,i.gzhead.extra.length>>8&255)),i.gzhead.hcrc&&(t.adler=p(t.adler,i.pending_buf,i.pending,0)),i.gzindex=0,i.status=69):(U(i,0),U(i,0),U(i,0),U(i,0),U(i,0),U(i,9===i.level?2:2<=i.strategy||i.level<2?4:0),U(i,3),i.status=E);else{var a=v+(i.w_bits-8<<4)<<8;a|=(2<=i.strategy||i.level<2?0:i.level<6?1:6===i.level?2:3)<<6,0!==i.strstart&&(a|=32),a+=31-a%31,i.status=E,P(i,a),0!==i.strstart&&(P(i,t.adler>>>16),P(i,65535&t.adler)),t.adler=1}if(69===i.status)if(i.gzhead.extra){for(n=i.pending;i.gzindex<(65535&i.gzhead.extra.length)&&(i.pending!==i.pending_buf_size||(i.gzhead.hcrc&&i.pending>n&&(t.adler=p(t.adler,i.pending_buf,i.pending-n,n)),F(t),n=i.pending,i.pending!==i.pending_buf_size));)U(i,255&i.gzhead.extra[i.gzindex]),i.gzindex++;i.gzhead.hcrc&&i.pending>n&&(t.adler=p(t.adler,i.pending_buf,i.pending-n,n)),i.gzindex===i.gzhead.extra.length&&(i.gzindex=0,i.status=73)}else i.status=73;if(73===i.status)if(i.gzhead.name){n=i.pending;do{if(i.pending===i.pending_buf_size&&(i.gzhead.hcrc&&i.pending>n&&(t.adler=p(t.adler,i.pending_buf,i.pending-n,n)),F(t),n=i.pending,i.pending===i.pending_buf_size)){s=1;break}s=i.gzindex<i.gzhead.name.length?255&i.gzhead.name.charCodeAt(i.gzindex++):0,U(i,s)}while(0!==s);i.gzhead.hcrc&&i.pending>n&&(t.adler=p(t.adler,i.pending_buf,i.pending-n,n)),0===s&&(i.gzindex=0,i.status=91)}else i.status=91;if(91===i.status)if(i.gzhead.comment){n=i.pending;do{if(i.pending===i.pending_buf_size&&(i.gzhead.hcrc&&i.pending>n&&(t.adler=p(t.adler,i.pending_buf,i.pending-n,n)),F(t),n=i.pending,i.pending===i.pending_buf_size)){s=1;break}s=i.gzindex<i.gzhead.comment.length?255&i.gzhead.comment.charCodeAt(i.gzindex++):0,U(i,s)}while(0!==s);i.gzhead.hcrc&&i.pending>n&&(t.adler=p(t.adler,i.pending_buf,i.pending-n,n)),0===s&&(i.status=103)}else i.status=103;if(103===i.status&&(i.gzhead.hcrc?(i.pending+2>i.pending_buf_size&&F(t),i.pending+2<=i.pending_buf_size&&(U(i,255&t.adler),U(i,t.adler>>8&255),t.adler=0,i.status=E)):i.status=E),0!==i.pending){if(F(t),0===t.avail_out)return i.last_flush=-1,m}else if(0===t.avail_in&&T(e)<=T(r)&&e!==f)return R(t,-5);if(666===i.status&&0!==t.avail_in)return R(t,-5);if(0!==t.avail_in||0!==i.lookahead||e!==l&&666!==i.status){var o=2===i.strategy?function(t,e){for(var r;;){if(0===t.lookahead&&(j(t),0===t.lookahead)){if(e===l)return A;break}if(t.match_length=0,r=u._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++,r&&(N(t,!1),0===t.strm.avail_out))return A}return t.insert=0,e===f?(N(t,!0),0===t.strm.avail_out?O:B):t.last_lit&&(N(t,!1),0===t.strm.avail_out)?A:I}(i,e):3===i.strategy?function(t,e){for(var r,i,n,s,a=t.window;;){if(t.lookahead<=S){if(j(t),t.lookahead<=S&&e===l)return A;if(0===t.lookahead)break}if(t.match_length=0,t.lookahead>=x&&0<t.strstart&&(i=a[n=t.strstart-1])===a[++n]&&i===a[++n]&&i===a[++n]){s=t.strstart+S;do{}while(i===a[++n]&&i===a[++n]&&i===a[++n]&&i===a[++n]&&i===a[++n]&&i===a[++n]&&i===a[++n]&&i===a[++n]&&n<s);t.match_length=S-(s-n),t.match_length>t.lookahead&&(t.match_length=t.lookahead)}if(t.match_length>=x?(r=u._tr_tally(t,1,t.match_length-x),t.lookahead-=t.match_length,t.strstart+=t.match_length,t.match_length=0):(r=u._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++),r&&(N(t,!1),0===t.strm.avail_out))return A}return t.insert=0,e===f?(N(t,!0),0===t.strm.avail_out?O:B):t.last_lit&&(N(t,!1),0===t.strm.avail_out)?A:I}(i,e):h[i.level].func(i,e);if(o!==O&&o!==B||(i.status=666),o===A||o===O)return 0===t.avail_out&&(i.last_flush=-1),m;if(o===I&&(1===e?u._tr_align(i):5!==e&&(u._tr_stored_block(i,0,0,!1),3===e&&(D(i.head),0===i.lookahead&&(i.strstart=0,i.block_start=0,i.insert=0))),F(t),0===t.avail_out))return i.last_flush=-1,m}return e!==f?m:i.wrap<=0?1:(2===i.wrap?(U(i,255&t.adler),U(i,t.adler>>8&255),U(i,t.adler>>16&255),U(i,t.adler>>24&255),U(i,255&t.total_in),U(i,t.total_in>>8&255),U(i,t.total_in>>16&255),U(i,t.total_in>>24&255)):(P(i,t.adler>>>16),P(i,65535&t.adler)),F(t),0<i.wrap&&(i.wrap=-i.wrap),0!==i.pending?m:1)},r.deflateEnd=function(t){var e;return t&&t.state?(e=t.state.status)!==C&&69!==e&&73!==e&&91!==e&&103!==e&&e!==E&&666!==e?R(t,_):(t.state=null,e===E?R(t,-3):m):_},r.deflateSetDictionary=function(t,e){var r,i,n,s,a,o,h,u,l=e.length;if(!t||!t.state)return _;if(2===(s=(r=t.state).wrap)||1===s&&r.status!==C||r.lookahead)return _;for(1===s&&(t.adler=c(t.adler,e,l,0)),r.wrap=0,l>=r.w_size&&(0===s&&(D(r.head),r.strstart=0,r.block_start=0,r.insert=0),u=new d.Buf8(r.w_size),d.arraySet(u,e,l-r.w_size,r.w_size,0),e=u,l=r.w_size),a=t.avail_in,o=t.next_in,h=t.input,t.avail_in=l,t.next_in=0,t.input=e,j(r);r.lookahead>=x;){for(i=r.strstart,n=r.lookahead-(x-1);r.ins_h=(r.ins_h<<r.hash_shift^r.window[i+x-1])&r.hash_mask,r.prev[i&r.w_mask]=r.head[r.ins_h],r.head[r.ins_h]=i,i++,--n;);r.strstart=i,r.lookahead=x-1,j(r)}return r.strstart+=r.lookahead,r.block_start=r.strstart,r.insert=r.lookahead,r.lookahead=0,r.match_length=r.prev_length=x-1,r.match_available=0,t.next_in=o,t.input=h,t.avail_in=a,r.wrap=s,m},r.deflateInfo="pako deflate (from Nodeca project)"},{"../utils/common":41,"./adler32":43,"./crc32":45,"./messages":51,"./trees":52}],47:[function(t,e,r){"use strict";e.exports=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1}},{}],48:[function(t,e,r){"use strict";e.exports=function(t,e){var r,i,n,s,a,o,h,u,l,f,d,c,p,m,_,g,b,v,y,w,k,x,S,z,C;r=t.state,i=t.next_in,z=t.input,n=i+(t.avail_in-5),s=t.next_out,C=t.output,a=s-(e-t.avail_out),o=s+(t.avail_out-257),h=r.dmax,u=r.wsize,l=r.whave,f=r.wnext,d=r.window,c=r.hold,p=r.bits,m=r.lencode,_=r.distcode,g=(1<<r.lenbits)-1,b=(1<<r.distbits)-1;t:do{p<15&&(c+=z[i++]<<p,p+=8,c+=z[i++]<<p,p+=8),v=m[c&g];e:for(;;){if(c>>>=y=v>>>24,p-=y,0===(y=v>>>16&255))C[s++]=65535&v;else{if(!(16&y)){if(0==(64&y)){v=m[(65535&v)+(c&(1<<y)-1)];continue e}if(32&y){r.mode=12;break t}t.msg="invalid literal/length code",r.mode=30;break t}w=65535&v,(y&=15)&&(p<y&&(c+=z[i++]<<p,p+=8),w+=c&(1<<y)-1,c>>>=y,p-=y),p<15&&(c+=z[i++]<<p,p+=8,c+=z[i++]<<p,p+=8),v=_[c&b];r:for(;;){if(c>>>=y=v>>>24,p-=y,!(16&(y=v>>>16&255))){if(0==(64&y)){v=_[(65535&v)+(c&(1<<y)-1)];continue r}t.msg="invalid distance code",r.mode=30;break t}if(k=65535&v,p<(y&=15)&&(c+=z[i++]<<p,(p+=8)<y&&(c+=z[i++]<<p,p+=8)),h<(k+=c&(1<<y)-1)){t.msg="invalid distance too far back",r.mode=30;break t}if(c>>>=y,p-=y,(y=s-a)<k){if(l<(y=k-y)&&r.sane){t.msg="invalid distance too far back",r.mode=30;break t}if(S=d,(x=0)===f){if(x+=u-y,y<w){for(w-=y;C[s++]=d[x++],--y;);x=s-k,S=C}}else if(f<y){if(x+=u+f-y,(y-=f)<w){for(w-=y;C[s++]=d[x++],--y;);if(x=0,f<w){for(w-=y=f;C[s++]=d[x++],--y;);x=s-k,S=C}}}else if(x+=f-y,y<w){for(w-=y;C[s++]=d[x++],--y;);x=s-k,S=C}for(;2<w;)C[s++]=S[x++],C[s++]=S[x++],C[s++]=S[x++],w-=3;w&&(C[s++]=S[x++],1<w&&(C[s++]=S[x++]))}else{for(x=s-k;C[s++]=C[x++],C[s++]=C[x++],C[s++]=C[x++],2<(w-=3););w&&(C[s++]=C[x++],1<w&&(C[s++]=C[x++]))}break}}break}}while(i<n&&s<o);i-=w=p>>3,c&=(1<<(p-=w<<3))-1,t.next_in=i,t.next_out=s,t.avail_in=i<n?n-i+5:5-(i-n),t.avail_out=s<o?o-s+257:257-(s-o),r.hold=c,r.bits=p}},{}],49:[function(t,e,r){"use strict";var I=t("../utils/common"),O=t("./adler32"),B=t("./crc32"),R=t("./inffast"),T=t("./inftrees"),D=1,F=2,N=0,U=-2,P=1,i=852,n=592;function L(t){return(t>>>24&255)+(t>>>8&65280)+((65280&t)<<8)+((255&t)<<24)}function s(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new I.Buf16(320),this.work=new I.Buf16(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}function a(t){var e;return t&&t.state?(e=t.state,t.total_in=t.total_out=e.total=0,t.msg="",e.wrap&&(t.adler=1&e.wrap),e.mode=P,e.last=0,e.havedict=0,e.dmax=32768,e.head=null,e.hold=0,e.bits=0,e.lencode=e.lendyn=new I.Buf32(i),e.distcode=e.distdyn=new I.Buf32(n),e.sane=1,e.back=-1,N):U}function o(t){var e;return t&&t.state?((e=t.state).wsize=0,e.whave=0,e.wnext=0,a(t)):U}function h(t,e){var r,i;return t&&t.state?(i=t.state,e<0?(r=0,e=-e):(r=1+(e>>4),e<48&&(e&=15)),e&&(e<8||15<e)?U:(null!==i.window&&i.wbits!==e&&(i.window=null),i.wrap=r,i.wbits=e,o(t))):U}function u(t,e){var r,i;return t?(i=new s,(t.state=i).window=null,(r=h(t,e))!==N&&(t.state=null),r):U}var l,f,d=!0;function j(t){if(d){var e;for(l=new I.Buf32(512),f=new I.Buf32(32),e=0;e<144;)t.lens[e++]=8;for(;e<256;)t.lens[e++]=9;for(;e<280;)t.lens[e++]=7;for(;e<288;)t.lens[e++]=8;for(T(D,t.lens,0,288,l,0,t.work,{bits:9}),e=0;e<32;)t.lens[e++]=5;T(F,t.lens,0,32,f,0,t.work,{bits:5}),d=!1}t.lencode=l,t.lenbits=9,t.distcode=f,t.distbits=5}function Z(t,e,r,i){var n,s=t.state;return null===s.window&&(s.wsize=1<<s.wbits,s.wnext=0,s.whave=0,s.window=new I.Buf8(s.wsize)),i>=s.wsize?(I.arraySet(s.window,e,r-s.wsize,s.wsize,0),s.wnext=0,s.whave=s.wsize):(i<(n=s.wsize-s.wnext)&&(n=i),I.arraySet(s.window,e,r-i,n,s.wnext),(i-=n)?(I.arraySet(s.window,e,r-i,i,0),s.wnext=i,s.whave=s.wsize):(s.wnext+=n,s.wnext===s.wsize&&(s.wnext=0),s.whave<s.wsize&&(s.whave+=n))),0}r.inflateReset=o,r.inflateReset2=h,r.inflateResetKeep=a,r.inflateInit=function(t){return u(t,15)},r.inflateInit2=u,r.inflate=function(t,e){var r,i,n,s,a,o,h,u,l,f,d,c,p,m,_,g,b,v,y,w,k,x,S,z,C=0,E=new I.Buf8(4),A=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];if(!t||!t.state||!t.output||!t.input&&0!==t.avail_in)return U;12===(r=t.state).mode&&(r.mode=13),a=t.next_out,n=t.output,h=t.avail_out,s=t.next_in,i=t.input,o=t.avail_in,u=r.hold,l=r.bits,f=o,d=h,x=N;t:for(;;)switch(r.mode){case P:if(0===r.wrap){r.mode=13;break}for(;l<16;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(2&r.wrap&&35615===u){E[r.check=0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0),l=u=0,r.mode=2;break}if(r.flags=0,r.head&&(r.head.done=!1),!(1&r.wrap)||(((255&u)<<8)+(u>>8))%31){t.msg="incorrect header check",r.mode=30;break}if(8!=(15&u)){t.msg="unknown compression method",r.mode=30;break}if(l-=4,k=8+(15&(u>>>=4)),0===r.wbits)r.wbits=k;else if(k>r.wbits){t.msg="invalid window size",r.mode=30;break}r.dmax=1<<k,t.adler=r.check=1,r.mode=512&u?10:12,l=u=0;break;case 2:for(;l<16;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(r.flags=u,8!=(255&r.flags)){t.msg="unknown compression method",r.mode=30;break}if(57344&r.flags){t.msg="unknown header flags set",r.mode=30;break}r.head&&(r.head.text=u>>8&1),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0)),l=u=0,r.mode=3;case 3:for(;l<32;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}r.head&&(r.head.time=u),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,E[2]=u>>>16&255,E[3]=u>>>24&255,r.check=B(r.check,E,4,0)),l=u=0,r.mode=4;case 4:for(;l<16;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}r.head&&(r.head.xflags=255&u,r.head.os=u>>8),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0)),l=u=0,r.mode=5;case 5:if(1024&r.flags){for(;l<16;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}r.length=u,r.head&&(r.head.extra_len=u),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0)),l=u=0}else r.head&&(r.head.extra=null);r.mode=6;case 6:if(1024&r.flags&&(o<(c=r.length)&&(c=o),c&&(r.head&&(k=r.head.extra_len-r.length,r.head.extra||(r.head.extra=new Array(r.head.extra_len)),I.arraySet(r.head.extra,i,s,c,k)),512&r.flags&&(r.check=B(r.check,i,c,s)),o-=c,s+=c,r.length-=c),r.length))break t;r.length=0,r.mode=7;case 7:if(2048&r.flags){if(0===o)break t;for(c=0;k=i[s+c++],r.head&&k&&r.length<65536&&(r.head.name+=String.fromCharCode(k)),k&&c<o;);if(512&r.flags&&(r.check=B(r.check,i,c,s)),o-=c,s+=c,k)break t}else r.head&&(r.head.name=null);r.length=0,r.mode=8;case 8:if(4096&r.flags){if(0===o)break t;for(c=0;k=i[s+c++],r.head&&k&&r.length<65536&&(r.head.comment+=String.fromCharCode(k)),k&&c<o;);if(512&r.flags&&(r.check=B(r.check,i,c,s)),o-=c,s+=c,k)break t}else r.head&&(r.head.comment=null);r.mode=9;case 9:if(512&r.flags){for(;l<16;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(u!==(65535&r.check)){t.msg="header crc mismatch",r.mode=30;break}l=u=0}r.head&&(r.head.hcrc=r.flags>>9&1,r.head.done=!0),t.adler=r.check=0,r.mode=12;break;case 10:for(;l<32;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}t.adler=r.check=L(u),l=u=0,r.mode=11;case 11:if(0===r.havedict)return t.next_out=a,t.avail_out=h,t.next_in=s,t.avail_in=o,r.hold=u,r.bits=l,2;t.adler=r.check=1,r.mode=12;case 12:if(5===e||6===e)break t;case 13:if(r.last){u>>>=7&l,l-=7&l,r.mode=27;break}for(;l<3;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}switch(r.last=1&u,l-=1,3&(u>>>=1)){case 0:r.mode=14;break;case 1:if(j(r),r.mode=20,6!==e)break;u>>>=2,l-=2;break t;case 2:r.mode=17;break;case 3:t.msg="invalid block type",r.mode=30}u>>>=2,l-=2;break;case 14:for(u>>>=7&l,l-=7&l;l<32;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if((65535&u)!=(u>>>16^65535)){t.msg="invalid stored block lengths",r.mode=30;break}if(r.length=65535&u,l=u=0,r.mode=15,6===e)break t;case 15:r.mode=16;case 16:if(c=r.length){if(o<c&&(c=o),h<c&&(c=h),0===c)break t;I.arraySet(n,i,s,c,a),o-=c,s+=c,h-=c,a+=c,r.length-=c;break}r.mode=12;break;case 17:for(;l<14;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(r.nlen=257+(31&u),u>>>=5,l-=5,r.ndist=1+(31&u),u>>>=5,l-=5,r.ncode=4+(15&u),u>>>=4,l-=4,286<r.nlen||30<r.ndist){t.msg="too many length or distance symbols",r.mode=30;break}r.have=0,r.mode=18;case 18:for(;r.have<r.ncode;){for(;l<3;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}r.lens[A[r.have++]]=7&u,u>>>=3,l-=3}for(;r.have<19;)r.lens[A[r.have++]]=0;if(r.lencode=r.lendyn,r.lenbits=7,S={bits:r.lenbits},x=T(0,r.lens,0,19,r.lencode,0,r.work,S),r.lenbits=S.bits,x){t.msg="invalid code lengths set",r.mode=30;break}r.have=0,r.mode=19;case 19:for(;r.have<r.nlen+r.ndist;){for(;g=(C=r.lencode[u&(1<<r.lenbits)-1])>>>16&255,b=65535&C,!((_=C>>>24)<=l);){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(b<16)u>>>=_,l-=_,r.lens[r.have++]=b;else{if(16===b){for(z=_+2;l<z;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(u>>>=_,l-=_,0===r.have){t.msg="invalid bit length repeat",r.mode=30;break}k=r.lens[r.have-1],c=3+(3&u),u>>>=2,l-=2}else if(17===b){for(z=_+3;l<z;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}l-=_,k=0,c=3+(7&(u>>>=_)),u>>>=3,l-=3}else{for(z=_+7;l<z;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}l-=_,k=0,c=11+(127&(u>>>=_)),u>>>=7,l-=7}if(r.have+c>r.nlen+r.ndist){t.msg="invalid bit length repeat",r.mode=30;break}for(;c--;)r.lens[r.have++]=k}}if(30===r.mode)break;if(0===r.lens[256]){t.msg="invalid code -- missing end-of-block",r.mode=30;break}if(r.lenbits=9,S={bits:r.lenbits},x=T(D,r.lens,0,r.nlen,r.lencode,0,r.work,S),r.lenbits=S.bits,x){t.msg="invalid literal/lengths set",r.mode=30;break}if(r.distbits=6,r.distcode=r.distdyn,S={bits:r.distbits},x=T(F,r.lens,r.nlen,r.ndist,r.distcode,0,r.work,S),r.distbits=S.bits,x){t.msg="invalid distances set",r.mode=30;break}if(r.mode=20,6===e)break t;case 20:r.mode=21;case 21:if(6<=o&&258<=h){t.next_out=a,t.avail_out=h,t.next_in=s,t.avail_in=o,r.hold=u,r.bits=l,R(t,d),a=t.next_out,n=t.output,h=t.avail_out,s=t.next_in,i=t.input,o=t.avail_in,u=r.hold,l=r.bits,12===r.mode&&(r.back=-1);break}for(r.back=0;g=(C=r.lencode[u&(1<<r.lenbits)-1])>>>16&255,b=65535&C,!((_=C>>>24)<=l);){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(g&&0==(240&g)){for(v=_,y=g,w=b;g=(C=r.lencode[w+((u&(1<<v+y)-1)>>v)])>>>16&255,b=65535&C,!(v+(_=C>>>24)<=l);){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}u>>>=v,l-=v,r.back+=v}if(u>>>=_,l-=_,r.back+=_,r.length=b,0===g){r.mode=26;break}if(32&g){r.back=-1,r.mode=12;break}if(64&g){t.msg="invalid literal/length code",r.mode=30;break}r.extra=15&g,r.mode=22;case 22:if(r.extra){for(z=r.extra;l<z;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}r.length+=u&(1<<r.extra)-1,u>>>=r.extra,l-=r.extra,r.back+=r.extra}r.was=r.length,r.mode=23;case 23:for(;g=(C=r.distcode[u&(1<<r.distbits)-1])>>>16&255,b=65535&C,!((_=C>>>24)<=l);){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(0==(240&g)){for(v=_,y=g,w=b;g=(C=r.distcode[w+((u&(1<<v+y)-1)>>v)])>>>16&255,b=65535&C,!(v+(_=C>>>24)<=l);){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}u>>>=v,l-=v,r.back+=v}if(u>>>=_,l-=_,r.back+=_,64&g){t.msg="invalid distance code",r.mode=30;break}r.offset=b,r.extra=15&g,r.mode=24;case 24:if(r.extra){for(z=r.extra;l<z;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}r.offset+=u&(1<<r.extra)-1,u>>>=r.extra,l-=r.extra,r.back+=r.extra}if(r.offset>r.dmax){t.msg="invalid distance too far back",r.mode=30;break}r.mode=25;case 25:if(0===h)break t;if(c=d-h,r.offset>c){if((c=r.offset-c)>r.whave&&r.sane){t.msg="invalid distance too far back",r.mode=30;break}p=c>r.wnext?(c-=r.wnext,r.wsize-c):r.wnext-c,c>r.length&&(c=r.length),m=r.window}else m=n,p=a-r.offset,c=r.length;for(h<c&&(c=h),h-=c,r.length-=c;n[a++]=m[p++],--c;);0===r.length&&(r.mode=21);break;case 26:if(0===h)break t;n[a++]=r.length,h--,r.mode=21;break;case 27:if(r.wrap){for(;l<32;){if(0===o)break t;o--,u|=i[s++]<<l,l+=8}if(d-=h,t.total_out+=d,r.total+=d,d&&(t.adler=r.check=r.flags?B(r.check,n,d,a-d):O(r.check,n,d,a-d)),d=h,(r.flags?u:L(u))!==r.check){t.msg="incorrect data check",r.mode=30;break}l=u=0}r.mode=28;case 28:if(r.wrap&&r.flags){for(;l<32;){if(0===o)break t;o--,u+=i[s++]<<l,l+=8}if(u!==(4294967295&r.total)){t.msg="incorrect length check",r.mode=30;break}l=u=0}r.mode=29;case 29:x=1;break t;case 30:x=-3;break t;case 31:return-4;case 32:default:return U}return t.next_out=a,t.avail_out=h,t.next_in=s,t.avail_in=o,r.hold=u,r.bits=l,(r.wsize||d!==t.avail_out&&r.mode<30&&(r.mode<27||4!==e))&&Z(t,t.output,t.next_out,d-t.avail_out)?(r.mode=31,-4):(f-=t.avail_in,d-=t.avail_out,t.total_in+=f,t.total_out+=d,r.total+=d,r.wrap&&d&&(t.adler=r.check=r.flags?B(r.check,n,d,t.next_out-d):O(r.check,n,d,t.next_out-d)),t.data_type=r.bits+(r.last?64:0)+(12===r.mode?128:0)+(20===r.mode||15===r.mode?256:0),(0==f&&0===d||4===e)&&x===N&&(x=-5),x)},r.inflateEnd=function(t){if(!t||!t.state)return U;var e=t.state;return e.window&&(e.window=null),t.state=null,N},r.inflateGetHeader=function(t,e){var r;return t&&t.state?0==(2&(r=t.state).wrap)?U:((r.head=e).done=!1,N):U},r.inflateSetDictionary=function(t,e){var r,i=e.length;return t&&t.state?0!==(r=t.state).wrap&&11!==r.mode?U:11===r.mode&&O(1,e,i,0)!==r.check?-3:Z(t,e,i,i)?(r.mode=31,-4):(r.havedict=1,N):U},r.inflateInfo="pako inflate (from Nodeca project)"},{"../utils/common":41,"./adler32":43,"./crc32":45,"./inffast":48,"./inftrees":50}],50:[function(t,e,r){"use strict";var D=t("../utils/common"),F=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],N=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],U=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],P=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];e.exports=function(t,e,r,i,n,s,a,o){var h,u,l,f,d,c,p,m,_,g=o.bits,b=0,v=0,y=0,w=0,k=0,x=0,S=0,z=0,C=0,E=0,A=null,I=0,O=new D.Buf16(16),B=new D.Buf16(16),R=null,T=0;for(b=0;b<=15;b++)O[b]=0;for(v=0;v<i;v++)O[e[r+v]]++;for(k=g,w=15;1<=w&&0===O[w];w--);if(w<k&&(k=w),0===w)return n[s++]=20971520,n[s++]=20971520,o.bits=1,0;for(y=1;y<w&&0===O[y];y++);for(k<y&&(k=y),b=z=1;b<=15;b++)if(z<<=1,(z-=O[b])<0)return-1;if(0<z&&(0===t||1!==w))return-1;for(B[1]=0,b=1;b<15;b++)B[b+1]=B[b]+O[b];for(v=0;v<i;v++)0!==e[r+v]&&(a[B[e[r+v]]++]=v);if(c=0===t?(A=R=a,19):1===t?(A=F,I-=257,R=N,T-=257,256):(A=U,R=P,-1),b=y,d=s,S=v=E=0,l=-1,f=(C=1<<(x=k))-1,1===t&&852<C||2===t&&592<C)return 1;for(;;){for(p=b-S,_=a[v]<c?(m=0,a[v]):a[v]>c?(m=R[T+a[v]],A[I+a[v]]):(m=96,0),h=1<<b-S,y=u=1<<x;n[d+(E>>S)+(u-=h)]=p<<24|m<<16|_|0,0!==u;);for(h=1<<b-1;E&h;)h>>=1;if(0!==h?(E&=h-1,E+=h):E=0,v++,0==--O[b]){if(b===w)break;b=e[r+a[v]]}if(k<b&&(E&f)!==l){for(0===S&&(S=k),d+=y,z=1<<(x=b-S);x+S<w&&!((z-=O[x+S])<=0);)x++,z<<=1;if(C+=1<<x,1===t&&852<C||2===t&&592<C)return 1;n[l=E&f]=k<<24|x<<16|d-s|0}}return 0!==E&&(n[d+E]=b-S<<24|64<<16|0),o.bits=k,0}},{"../utils/common":41}],51:[function(t,e,r){"use strict";e.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],52:[function(t,e,r){"use strict";var n=t("../utils/common"),o=0,h=1;function i(t){for(var e=t.length;0<=--e;)t[e]=0}var s=0,a=29,u=256,l=u+1+a,f=30,d=19,_=2*l+1,g=15,c=16,p=7,m=256,b=16,v=17,y=18,w=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],k=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],x=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],S=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],z=new Array(2*(l+2));i(z);var C=new Array(2*f);i(C);var E=new Array(512);i(E);var A=new Array(256);i(A);var I=new Array(a);i(I);var O,B,R,T=new Array(f);function D(t,e,r,i,n){this.static_tree=t,this.extra_bits=e,this.extra_base=r,this.elems=i,this.max_length=n,this.has_stree=t&&t.length}function F(t,e){this.dyn_tree=t,this.max_code=0,this.stat_desc=e}function N(t){return t<256?E[t]:E[256+(t>>>7)]}function U(t,e){t.pending_buf[t.pending++]=255&e,t.pending_buf[t.pending++]=e>>>8&255}function P(t,e,r){t.bi_valid>c-r?(t.bi_buf|=e<<t.bi_valid&65535,U(t,t.bi_buf),t.bi_buf=e>>c-t.bi_valid,t.bi_valid+=r-c):(t.bi_buf|=e<<t.bi_valid&65535,t.bi_valid+=r)}function L(t,e,r){P(t,r[2*e],r[2*e+1])}function j(t,e){for(var r=0;r|=1&t,t>>>=1,r<<=1,0<--e;);return r>>>1}function Z(t,e,r){var i,n,s=new Array(g+1),a=0;for(i=1;i<=g;i++)s[i]=a=a+r[i-1]<<1;for(n=0;n<=e;n++){var o=t[2*n+1];0!==o&&(t[2*n]=j(s[o]++,o))}}function W(t){var e;for(e=0;e<l;e++)t.dyn_ltree[2*e]=0;for(e=0;e<f;e++)t.dyn_dtree[2*e]=0;for(e=0;e<d;e++)t.bl_tree[2*e]=0;t.dyn_ltree[2*m]=1,t.opt_len=t.static_len=0,t.last_lit=t.matches=0}function M(t){8<t.bi_valid?U(t,t.bi_buf):0<t.bi_valid&&(t.pending_buf[t.pending++]=t.bi_buf),t.bi_buf=0,t.bi_valid=0}function H(t,e,r,i){var n=2*e,s=2*r;return t[n]<t[s]||t[n]===t[s]&&i[e]<=i[r]}function G(t,e,r){for(var i=t.heap[r],n=r<<1;n<=t.heap_len&&(n<t.heap_len&&H(e,t.heap[n+1],t.heap[n],t.depth)&&n++,!H(e,i,t.heap[n],t.depth));)t.heap[r]=t.heap[n],r=n,n<<=1;t.heap[r]=i}function K(t,e,r){var i,n,s,a,o=0;if(0!==t.last_lit)for(;i=t.pending_buf[t.d_buf+2*o]<<8|t.pending_buf[t.d_buf+2*o+1],n=t.pending_buf[t.l_buf+o],o++,0===i?L(t,n,e):(L(t,(s=A[n])+u+1,e),0!==(a=w[s])&&P(t,n-=I[s],a),L(t,s=N(--i),r),0!==(a=k[s])&&P(t,i-=T[s],a)),o<t.last_lit;);L(t,m,e)}function Y(t,e){var r,i,n,s=e.dyn_tree,a=e.stat_desc.static_tree,o=e.stat_desc.has_stree,h=e.stat_desc.elems,u=-1;for(t.heap_len=0,t.heap_max=_,r=0;r<h;r++)0!==s[2*r]?(t.heap[++t.heap_len]=u=r,t.depth[r]=0):s[2*r+1]=0;for(;t.heap_len<2;)s[2*(n=t.heap[++t.heap_len]=u<2?++u:0)]=1,t.depth[n]=0,t.opt_len--,o&&(t.static_len-=a[2*n+1]);for(e.max_code=u,r=t.heap_len>>1;1<=r;r--)G(t,s,r);for(n=h;r=t.heap[1],t.heap[1]=t.heap[t.heap_len--],G(t,s,1),i=t.heap[1],t.heap[--t.heap_max]=r,t.heap[--t.heap_max]=i,s[2*n]=s[2*r]+s[2*i],t.depth[n]=(t.depth[r]>=t.depth[i]?t.depth[r]:t.depth[i])+1,s[2*r+1]=s[2*i+1]=n,t.heap[1]=n++,G(t,s,1),2<=t.heap_len;);t.heap[--t.heap_max]=t.heap[1],function(t,e){var r,i,n,s,a,o,h=e.dyn_tree,u=e.max_code,l=e.stat_desc.static_tree,f=e.stat_desc.has_stree,d=e.stat_desc.extra_bits,c=e.stat_desc.extra_base,p=e.stat_desc.max_length,m=0;for(s=0;s<=g;s++)t.bl_count[s]=0;for(h[2*t.heap[t.heap_max]+1]=0,r=t.heap_max+1;r<_;r++)p<(s=h[2*h[2*(i=t.heap[r])+1]+1]+1)&&(s=p,m++),h[2*i+1]=s,u<i||(t.bl_count[s]++,a=0,c<=i&&(a=d[i-c]),o=h[2*i],t.opt_len+=o*(s+a),f&&(t.static_len+=o*(l[2*i+1]+a)));if(0!==m){do{for(s=p-1;0===t.bl_count[s];)s--;t.bl_count[s]--,t.bl_count[s+1]+=2,t.bl_count[p]--,m-=2}while(0<m);for(s=p;0!==s;s--)for(i=t.bl_count[s];0!==i;)u<(n=t.heap[--r])||(h[2*n+1]!==s&&(t.opt_len+=(s-h[2*n+1])*h[2*n],h[2*n+1]=s),i--)}}(t,e),Z(s,u,t.bl_count)}function X(t,e,r){var i,n,s=-1,a=e[1],o=0,h=7,u=4;for(0===a&&(h=138,u=3),e[2*(r+1)+1]=65535,i=0;i<=r;i++)n=a,a=e[2*(i+1)+1],++o<h&&n===a||(o<u?t.bl_tree[2*n]+=o:0!==n?(n!==s&&t.bl_tree[2*n]++,t.bl_tree[2*b]++):o<=10?t.bl_tree[2*v]++:t.bl_tree[2*y]++,s=n,u=(o=0)===a?(h=138,3):n===a?(h=6,3):(h=7,4))}function V(t,e,r){var i,n,s=-1,a=e[1],o=0,h=7,u=4;for(0===a&&(h=138,u=3),i=0;i<=r;i++)if(n=a,a=e[2*(i+1)+1],!(++o<h&&n===a)){if(o<u)for(;L(t,n,t.bl_tree),0!=--o;);else 0!==n?(n!==s&&(L(t,n,t.bl_tree),o--),L(t,b,t.bl_tree),P(t,o-3,2)):o<=10?(L(t,v,t.bl_tree),P(t,o-3,3)):(L(t,y,t.bl_tree),P(t,o-11,7));s=n,u=(o=0)===a?(h=138,3):n===a?(h=6,3):(h=7,4)}}i(T);var q=!1;function J(t,e,r,i){P(t,(s<<1)+(i?1:0),3),function(t,e,r,i){M(t),i&&(U(t,r),U(t,~r)),n.arraySet(t.pending_buf,t.window,e,r,t.pending),t.pending+=r}(t,e,r,!0)}r._tr_init=function(t){q||(function(){var t,e,r,i,n,s=new Array(g+1);for(i=r=0;i<a-1;i++)for(I[i]=r,t=0;t<1<<w[i];t++)A[r++]=i;for(A[r-1]=i,i=n=0;i<16;i++)for(T[i]=n,t=0;t<1<<k[i];t++)E[n++]=i;for(n>>=7;i<f;i++)for(T[i]=n<<7,t=0;t<1<<k[i]-7;t++)E[256+n++]=i;for(e=0;e<=g;e++)s[e]=0;for(t=0;t<=143;)z[2*t+1]=8,t++,s[8]++;for(;t<=255;)z[2*t+1]=9,t++,s[9]++;for(;t<=279;)z[2*t+1]=7,t++,s[7]++;for(;t<=287;)z[2*t+1]=8,t++,s[8]++;for(Z(z,l+1,s),t=0;t<f;t++)C[2*t+1]=5,C[2*t]=j(t,5);O=new D(z,w,u+1,l,g),B=new D(C,k,0,f,g),R=new D(new Array(0),x,0,d,p)}(),q=!0),t.l_desc=new F(t.dyn_ltree,O),t.d_desc=new F(t.dyn_dtree,B),t.bl_desc=new F(t.bl_tree,R),t.bi_buf=0,t.bi_valid=0,W(t)},r._tr_stored_block=J,r._tr_flush_block=function(t,e,r,i){var n,s,a=0;0<t.level?(2===t.strm.data_type&&(t.strm.data_type=function(t){var e,r=4093624447;for(e=0;e<=31;e++,r>>>=1)if(1&r&&0!==t.dyn_ltree[2*e])return o;if(0!==t.dyn_ltree[18]||0!==t.dyn_ltree[20]||0!==t.dyn_ltree[26])return h;for(e=32;e<u;e++)if(0!==t.dyn_ltree[2*e])return h;return o}(t)),Y(t,t.l_desc),Y(t,t.d_desc),a=function(t){var e;for(X(t,t.dyn_ltree,t.l_desc.max_code),X(t,t.dyn_dtree,t.d_desc.max_code),Y(t,t.bl_desc),e=d-1;3<=e&&0===t.bl_tree[2*S[e]+1];e--);return t.opt_len+=3*(e+1)+5+5+4,e}(t),n=t.opt_len+3+7>>>3,(s=t.static_len+3+7>>>3)<=n&&(n=s)):n=s=r+5,r+4<=n&&-1!==e?J(t,e,r,i):4===t.strategy||s===n?(P(t,2+(i?1:0),3),K(t,z,C)):(P(t,4+(i?1:0),3),function(t,e,r,i){var 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\ No newline at end of file

programming_language: JavaScript
filename: load_async.md
change_type: ModificationType.MODIFY
diff: @@ -10,6 +10,8 @@ object at the current folder level. This technique has some limitations, see
 If the JSZip object already contains entries, new entries will be merged. If
 two have the same name, the loaded one will replace the other.
 
+Since v3.8.0 this method will santize relative path components (i.e. `..`) in loaded filenames to avoid ["zip slip" attacks](https://snyk.io/research/zip-slip-vulnerability). For example: `../../../example.txt` → `example.txt`, `src/images/../example.txt` → `src/example.txt`. The original filename is available on each zip entry as `unsafeOriginalName`.
+
 __Returns__ : A [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) with the updated zip object.
 The promise can fail if the loaded data is not valid zip data or if it
 uses unsupported features (multi volume, password protected, etc).
@@ -194,3 +196,24 @@ zip.loadAsync(bin1)
     // file3.txt, from bin2
 });
 ```
+
+Reading a zip file with relative filenames:
+
+```js
+// here, "unsafe.zip" is zip file containing:
+// src/images/../file.txt
+// ../../example.txt
+
+require("fs").readFile("unsafe.zip", function (err, data) {
+    if (err) throw err;
+    var zip = new JSZip();
+    zip.loadAsync(data)
+    .then(function (zip) {
+        console.log(zip.files);
+        // src/file.txt
+        // example.txt
+        console.log(zip.files["example.txt"].unsafeOriginalName);
+        // "../../example.txt"
+    });
+}
+```

programming_language: Markdown
filename: index.d.ts
change_type: ModificationType.MODIFY
diff: @@ -65,6 +65,11 @@ declare namespace JSZip {
 
     interface JSZipObject {
         name: string;
+        /**
+         * Present for files loadded with `loadAsync`. May contain ".." path components that could
+         * result in a zip-slip attack. See https://snyk.io/research/zip-slip-vulnerability
+         */
+        unsafeOriginalName?: string;
         dir: boolean;
         date: Date;
         comment: string;

programming_language: TypeScript
filename: index.js
change_type: ModificationType.MODIFY
diff: @@ -45,7 +45,7 @@ JSZip.defaults = require('./defaults');
 
 // TODO find a better way to handle this version,
 // a require('package.json').version doesn't work with webpack, see #327
-JSZip.version = "3.7.1";
+JSZip.version = "3.8.0";
 
 JSZip.loadAsync = function (content, options) {
     return new JSZip().loadAsync(content, options);

programming_language: JavaScript
filename: load.js
change_type: ModificationType.MODIFY
diff: @@ -61,7 +61,11 @@ module.exports = function (data, options) {
             var files = zipEntries.files;
             for (var i = 0; i < files.length; i++) {
                 var input = files[i];
-                zip.file(input.fileNameStr, input.decompressed, {
+
+                var unsafeName = input.fileNameStr;
+                var safeName = utils.resolve(input.fileNameStr);
+
+                zip.file(safeName, input.decompressed, {
                     binary: true,
                     optimizedBinaryString: true,
                     date: input.date,
@@ -71,6 +75,9 @@ module.exports = function (data, options) {
                     dosPermissions: input.dosPermissions,
                     createFolders: options.createFolders
                 });
+                if (!input.dir) {
+                    zip.file(safeName).unsafeOriginalName = unsafeName;
+                }
             }
             if (zipEntries.zipComment.length) {
                 zip.comment = zipEntries.zipComment;

programming_language: JavaScript
filename: utils.js
change_type: ModificationType.MODIFY
diff: @@ -317,6 +317,31 @@ exports.transformTo = function(outputType, input) {
     return result;
 };
 
+/**
+ * Resolve all relative path components, "." and "..", in a path. If these relative components
+ * traverse above the root then the resulting path will only contain the final path component.
+ *
+ * All empty components, e.g. "//", are removed.
+ * @param {string} path A path with / or \ separators
+ * @returns {string} The path with all relative path components resolved.
+ */
+exports.resolve = function(path) {
+    var parts = path.split("/");
+    var result = [];
+    for (var index = 0; index < parts.length; index++) {
+        var part = parts[index];
+        // Allow the first and last component to be empty for trailing slashes.
+        if (part === "." || (part === "" && index !== 0 && index !== parts.length - 1)) {
+            continue;
+        } else if (part === "..") {
+            result.pop();
+        } else {
+            result.push(part);
+        }
+    }
+    return result.join("/");
+};
+
 /**
  * Return the type of the input.
  * The type will be in a format valid for JSZip.utils.transformTo : string, array, uint8array, arraybuffer.
@@ -425,8 +450,8 @@ exports.prepareContent = function(name, inputData, isBinary, isOptimizedBinarySt
 
     // if inputData is already a promise, this flatten it.
     var promise = external.Promise.resolve(inputData).then(function(data) {
-        
-        
+
+
         var isBlob = support.blob && (data instanceof Blob || ['[object File]', '[object Blob]'].indexOf(Object.prototype.toString.call(data)) !== -1);
 
         if (isBlob && typeof FileReader !== "undefined") {

programming_language: JavaScript
filename: utils.js
change_type: ModificationType.MODIFY
diff: @@ -1,19 +1,21 @@
 /* global QUnit,JSZip,JSZipTestUtils */
 'use strict';
 
+// These tests only run in Node
 var utils = require("../../lib/utils");
 
 QUnit.module("utils");
 
 QUnit.test("Paths are resolved correctly", function (assert) {
-    assert.strictEqual(utils.resolve("root\\a\\b"), "root/a/b");
+    // Backslashes can be part of filenames
+    assert.strictEqual(utils.resolve("root\\a\\b"), "root\\a\\b");
     assert.strictEqual(utils.resolve("root/a/b"), "root/a/b");
     assert.strictEqual(utils.resolve("root/a/.."), "root");
     assert.strictEqual(utils.resolve("root/a/../b"), "root/b");
     assert.strictEqual(utils.resolve("root/a/./b"), "root/a/b");
     assert.strictEqual(utils.resolve("root/../../../"), "");
-    assert.strictEqual(utils.resolve("////"), "");
-    assert.strictEqual(utils.resolve("/a/b/c"), "a/b/c");
+    assert.strictEqual(utils.resolve("////"), "/");
+    assert.strictEqual(utils.resolve("/a/b/c"), "/a/b/c");
     assert.strictEqual(utils.resolve("a/b/c/"), "a/b/c/");
     assert.strictEqual(utils.resolve("../../../../../a"), "a");
     assert.strictEqual(utils.resolve("../app.js"), "app.js");

programming_language: JavaScript