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/** Dirty script to generate pretty .d.ts */
import { readFileSync, writeFileSync, appendFileSync, readdirSync } from "node:fs";
import { TASKS_DATA } from "@huggingface/tasks";
const tasks = Object.keys(TASKS_DATA)
.sort()
.filter((task) => task !== "other");
let types = readFileSync("./src/types.ts", "utf-8");
types = types.replace(/import.* "@huggingface\/tasks";\n/g, "");
types = types.replace(' Exclude<PipelineType, "other">', ["", ...tasks.map((task) => `"${task}"`)].join("\n\t| "));
if (types.includes("PipelineType") || types.includes("@huggingface/tasks")) {
console.log(types);
console.error("Failed to parse types.ts");
process.exit(1);
}
writeFileSync("./dist/index.d.ts", types + "\n");
appendFileSync("./dist/index.d.ts", "export class InferenceOutputError extends TypeError {}" + "\n");
const dirs = readdirSync("./src/tasks");
const fns: string[] = [];
for (const dir of dirs) {
if (dir.endsWith(".ts")) {
continue;
}
const files = readdirSync(`./src/tasks/${dir}`);
for (const file of files) {
if (!file.endsWith(".ts")) {
continue;
}
const fileContent = readFileSync(`./src/tasks/${dir}/${file}`, "utf-8");
for (const type of extractTypesAndInterfaces(fileContent)) {
appendFileSync("./dist/index.d.ts", type + "\n");
}
for (const fn of extractAsyncFunctions(fileContent)) {
appendFileSync("./dist/index.d.ts", fn + "\n");
fns.push(fn);
}
}
}
appendFileSync(
"./dist/index.d.ts",
`export class HfInference {
\tconstructor(accessToken?: string, defaultOptions?: Options);
\t/**
\t * Returns copy of HfInference tied to a specified endpoint.
\t */
\tendpoint(endpointUrl: string): HfInferenceEndpoint;
` +
fns
.map(
(fn) =>
`${fn
.replace(/args: [a-zA-Z]+/, (args) => `args: Omit<${args.slice("args: ".length)}, 'accessToken'>`)
.replace("export function ", "")
.split("\n")
.map((line) => "\t" + line)
.join("\n")}`
)
.join("\n") +
"\n}\n"
);
appendFileSync(
"./dist/index.d.ts",
`export class HfInferenceEndpoint {\n\tconstructor(endpointUrl: string, accessToken?: string, defaultOptions?: Options);\n` +
fns
.map(
(fn) =>
`${fn
.replace(/args: [a-zA-Z]+/, (args) => `args: Omit<${args.slice("args: ".length)}, 'accessToken' | 'model'>`)
.replace("export function ", "")
.split("\n")
.map((line) => "\t" + line)
.join("\n")}`
)
.join("\n") +
"\n}\n"
);
function* extractTypesAndInterfaces(fileContent: string): Iterable<string> {
let index = 0;
for (const kind of ["type", "interface"]) {
while (true) {
index = fileContent.indexOf(`export ${kind} `, index);
const initialIndex = index;
if (index === -1) {
break;
}
let bracketOpen = 0;
dance: for (let i = index; i < fileContent.length; i++) {
switch (fileContent[i]) {
case "{":
bracketOpen++;
break;
case "}":
bracketOpen--;
if (bracketOpen === 0 && kind === "interface") {
// Add doc comment if present
if (fileContent[index - 2] === "/" && fileContent[index - 3] === "*") {
index = fileContent.lastIndexOf("/*", index);
}
yield fileContent.slice(index, i + 1);
index = i + 1;
break dance;
}
break;
case ";":
if (bracketOpen === 0) {
// Add doc comment if present
if (fileContent[index - 2] === "/" && fileContent[index - 3] === "*") {
index = fileContent.lastIndexOf("/*", index);
}
yield fileContent.slice(index, i + 1);
index = i + 1;
break dance;
}
break;
}
}
if (initialIndex === index) {
console.error("Failed to parse fileContent", fileContent.slice(index, index + 100));
process.exit(1);
}
}
}
}
function* extractAsyncFunctions(fileContent: string): Iterable<string> {
let index = 0;
while (true) {
index = fileContent.indexOf(`export async function`, index);
if (index === -1) {
break;
}
const typeBegin = fileContent.indexOf("): ", index);
if (typeBegin === -1) {
console.error("Failed to parse fileContent", fileContent.slice(index, index + 100));
process.exit(1);
}
const typeEnd = fileContent.indexOf(" {", typeBegin);
if (typeEnd === -1) {
console.error("Failed to parse fileContent", fileContent.slice(index, index + 100));
process.exit(1);
}
if (fileContent[index - 2] === "/" && fileContent[index - 3] === "*") {
index = fileContent.lastIndexOf("/*", index);
}
yield fileContent
.slice(index, typeEnd)
.replace("export async ", "export ")
.replace("export function*", "export function")
.trim() + ";";
index = typeEnd;
}
}
for (const distPath of ["./dist/index.js", "./dist/index.cjs"]) {
writeFileSync(distPath, '/// <reference path="./index.d.ts" />\n' + readFileSync(distPath, "utf-8"));
}
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