cloudflare/cloudflare-typescript
Publicmirrored from https://github.com/cloudflare/cloudflare-typescriptAvailable
scripts/utils/postprocess-files.cjs
101lines · modecode
| 1 | // @ts-check |
| 2 | const fs = require('fs'); |
| 3 | const path = require('path'); |
| 4 | |
| 5 | const distDir = |
| 6 | process.env['DIST_PATH'] ? |
| 7 | path.resolve(process.env['DIST_PATH']) |
| 8 | : path.resolve(__dirname, '..', '..', 'dist'); |
| 9 | |
| 10 | async function* walk(dir) { |
| 11 | for await (const d of await fs.promises.opendir(dir)) { |
| 12 | const entry = path.join(dir, d.name); |
| 13 | if (d.isDirectory()) yield* walk(entry); |
| 14 | else if (d.isFile()) yield entry; |
| 15 | } |
| 16 | } |
| 17 | |
| 18 | async function postprocess() { |
| 19 | for await (const file of walk(distDir)) { |
| 20 | if (!/(\.d)?[cm]?ts$/.test(file)) continue; |
| 21 | |
| 22 | const code = await fs.promises.readFile(file, 'utf8'); |
| 23 | |
| 24 | // strip out lib="dom", types="node", and types="react" references; these |
| 25 | // are needed at build time, but would pollute the user's TS environment |
| 26 | let transformed = code.replace( |
| 27 | /^ *\/\/\/ *<reference +(lib="dom"|types="(node|react)").*?\n/gm, |
| 28 | // replace with same number of characters to avoid breaking source maps |
| 29 | (match) => ' '.repeat(match.length - 1) + '\n', |
| 30 | ); |
| 31 | |
| 32 | // TypeScript's declaration emitter collapses /** @ts-ignore */ onto the same |
| 33 | // line as the type declaration, which doesn't work. So we convert to // @ts-ignore |
| 34 | // on its own line to properly suppresses errors. |
| 35 | if (file.endsWith('.d.ts') || file.endsWith('.d.mts') || file.endsWith('.d.cts')) { |
| 36 | transformed = transformed.replace(/\/\*\* @ts-ignore\b[^*]*\*\/ /gm, '// @ts-ignore\n'); |
| 37 | } |
| 38 | |
| 39 | if (transformed !== code) { |
| 40 | console.error(`wrote ${path.relative(process.cwd(), file)}`); |
| 41 | await fs.promises.writeFile(file, transformed, 'utf8'); |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | const newExports = { |
| 46 | '.': { |
| 47 | require: { |
| 48 | types: './index.d.ts', |
| 49 | default: './index.js', |
| 50 | }, |
| 51 | types: './index.d.mts', |
| 52 | default: './index.mjs', |
| 53 | }, |
| 54 | }; |
| 55 | |
| 56 | for (const entry of await fs.promises.readdir(distDir, { withFileTypes: true })) { |
| 57 | if (entry.isDirectory() && entry.name !== 'src' && entry.name !== 'internal' && entry.name !== 'bin') { |
| 58 | const subpath = './' + entry.name; |
| 59 | newExports[subpath + '/*.mjs'] = { |
| 60 | default: subpath + '/*.mjs', |
| 61 | }; |
| 62 | newExports[subpath + '/*.js'] = { |
| 63 | default: subpath + '/*.js', |
| 64 | }; |
| 65 | newExports[subpath + '/*'] = { |
| 66 | import: subpath + '/*.mjs', |
| 67 | require: subpath + '/*.js', |
| 68 | }; |
| 69 | } else if (entry.isFile() && /\.[cm]?js$/.test(entry.name)) { |
| 70 | const { name, ext } = path.parse(entry.name); |
| 71 | const subpathWithoutExt = './' + name; |
| 72 | const subpath = './' + entry.name; |
| 73 | newExports[subpathWithoutExt] ||= { import: undefined, require: undefined }; |
| 74 | const isModule = ext[1] === 'm'; |
| 75 | if (isModule) { |
| 76 | newExports[subpathWithoutExt].import = subpath; |
| 77 | } else { |
| 78 | newExports[subpathWithoutExt].require = subpath; |
| 79 | } |
| 80 | newExports[subpath] = { |
| 81 | default: subpath, |
| 82 | }; |
| 83 | } |
| 84 | } |
| 85 | await fs.promises.writeFile( |
| 86 | 'dist/package.json', |
| 87 | JSON.stringify( |
| 88 | Object.assign( |
| 89 | /** @type {Record<String, unknown>} */ ( |
| 90 | JSON.parse(await fs.promises.readFile('dist/package.json', 'utf-8')) |
| 91 | ), |
| 92 | { |
| 93 | exports: newExports, |
| 94 | }, |
| 95 | ), |
| 96 | null, |
| 97 | 2, |
| 98 | ), |
| 99 | ); |
| 100 | } |
| 101 | postprocess(); |
| 102 | |