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tsconfig.js
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tsconfig.js
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import fs from "fs";
function importJSON(path) {
return JSON.parse(fs.readFileSync(path));
}
const archivedSyntaxPkgs = importJSON(
new URL("./archived-syntax-pkgs.json", import.meta.url)
);
const thirdPartyBabelPlugins = [
"@babel/preset-modules/lib/plugins/transform-async-arrows-in-class",
"@babel/preset-modules/lib/plugins/transform-edge-default-parameters",
"@babel/preset-modules/lib/plugins/transform-edge-function-name",
"@babel/preset-modules/lib/plugins/transform-tagged-template-caching",
"@babel/preset-modules/lib/plugins/transform-safari-block-shadowing",
"@babel/preset-modules/lib/plugins/transform-safari-for-shadowing",
"babel-plugin-polyfill-corejs2",
"babel-plugin-polyfill-corejs3",
"babel-plugin-polyfill-regenerator",
"regenerator-transform",
];
const root = new URL("../../", import.meta.url);
function getTsPkgs(subRoot) {
return fs
.readdirSync(new URL(subRoot, root))
.filter(name => name.startsWith("babel-"))
.map(name => {
const relative = `./${subRoot}/${name}`;
const packageJSON = importJSON(new URL(relative + "/package.json", root));
// Babel 8 exports > Babel 7 exports > {}
const exports =
packageJSON.conditions?.BABEL_8_BREAKING?.[0]?.exports ??
packageJSON.exports ??
{};
const subExports = Object.entries(exports).flatMap(
([_export, exportPath]) => {
// The @babel/standalone has babel.js as exports, but we don't have src/babel.ts
if (name === "babel-standalone") {
return [["", "/src"]];
}
if (name === "babel-compat-data") {
// map ./plugins to ./data/plugins.json
const subExport = _export.slice(1);
const subExportPath = exportPath
.replace("./", "/data/")
.replace(/\.js$/, ".json");
return [[subExport, subExportPath]];
}
// [{esm, default}, "./lib/index.js"]
if (Array.isArray(exportPath)) {
exportPath = exportPath[1];
}
if (typeof exportPath === "object") {
exportPath = exportPath.default;
}
if (exportPath.startsWith("./lib") && exportPath.endsWith(".js")) {
// remove the leading `.` and trailing `.js`
const subExport = _export.slice(1).replace(/\.js$/, "");
const subExportPath = exportPath
.replace("./lib", "/src")
.replace(/\.js$/, ".ts")
.replace(/\/index\.ts$/, "");
return [[subExport, subExportPath]];
}
return [];
}
);
return {
name: name.replace(/^babel-/, "@babel/"),
relative,
subExports,
};
})
.filter(
({ name, relative }) =>
// @babel/register is special-cased because its entry point is a js file
name === "@babel/register" ||
// @babel/compat-data is used by preset-env
name === "@babel/compat-data" ||
fs.existsSync(new URL(relative + "/src/index.ts", root))
);
}
const tsPkgs = [
...getTsPkgs("packages"),
...getTsPkgs("eslint"),
...getTsPkgs("codemods"),
];
fs.writeFileSync(
new URL("tsconfig.json", root),
"/* This file is automatically generated by scripts/generators/tsconfig.js */\n" +
JSON.stringify(
{
extends: "./tsconfig.base.json",
include: tsPkgs.map(({ relative }) => `${relative}/src/**/*.ts`),
compilerOptions: {
paths: Object.fromEntries([
...tsPkgs.flatMap(({ name, relative, subExports }) => {
return subExports.map(([subExport, subExportPath]) => {
return [name + subExport, [relative + subExportPath]];
});
}),
...archivedSyntaxPkgs.map(name => [
name,
["./lib/archived-libs.d.ts"],
]),
...thirdPartyBabelPlugins.map(name => [
name,
["./lib/third-party-libs.d.ts"],
]),
[
"babel-plugin-dynamic-import-node/utils",
["./lib/babel-plugin-dynamic-import-node.d.ts"],
],
["globals", ["./node_modules/globals-BABEL_8_BREAKING-true"]],
["js-tokens", ["./node_modules/js-tokens-BABEL_8_BREAKING-true"]],
["regexpu-core", ["./lib/regexpu-core.d.ts"]],
]),
},
},
null,
2
)
);