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Runtime error
File size: 1,920 Bytes
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.decodePacket = void 0;
const commons_js_1 = require("./commons.js");
const decodePacket = (encodedPacket, binaryType) => {
if (typeof encodedPacket !== "string") {
return {
type: "message",
data: mapBinary(encodedPacket, binaryType)
};
}
const type = encodedPacket.charAt(0);
if (type === "b") {
const buffer = Buffer.from(encodedPacket.substring(1), "base64");
return {
type: "message",
data: mapBinary(buffer, binaryType)
};
}
if (!commons_js_1.PACKET_TYPES_REVERSE[type]) {
return commons_js_1.ERROR_PACKET;
}
return encodedPacket.length > 1
? {
type: commons_js_1.PACKET_TYPES_REVERSE[type],
data: encodedPacket.substring(1)
}
: {
type: commons_js_1.PACKET_TYPES_REVERSE[type]
};
};
exports.decodePacket = decodePacket;
const mapBinary = (data, binaryType) => {
switch (binaryType) {
case "arraybuffer":
if (data instanceof ArrayBuffer) {
// from WebSocket & binaryType "arraybuffer"
return data;
}
else if (Buffer.isBuffer(data)) {
// from HTTP long-polling
return data.buffer.slice(data.byteOffset, data.byteOffset + data.byteLength);
}
else {
// from WebTransport (Uint8Array)
return data.buffer;
}
case "nodebuffer":
default:
if (Buffer.isBuffer(data)) {
// from HTTP long-polling or WebSocket & binaryType "nodebuffer" (default)
return data;
}
else {
// from WebTransport (Uint8Array)
return Buffer.from(data);
}
}
};
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