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| 1 | +#!/usr/bin/env node |
| 2 | +/** |
| 3 | + * Generalized build script replacing former microbundle-based per-package builds. |
| 4 | + * |
| 5 | + * Usage: |
| 6 | + * npm run build # build all packages |
| 7 | + * node scripts/build-packages.cjs core hooks # build subset |
| 8 | + * |
| 9 | + * Pipeline per package: |
| 10 | + * esbuild (ESM) -> manual CJS transform -> esbuild IIFE (UMD) -> terser minification (in-place) |
| 11 | + * Property rename (internal) via babel-plugin-transform-rename-properties using root mangle.json |
| 12 | + */ |
| 13 | +const path = require('node:path'); |
| 14 | +const fs = require('node:fs/promises'); |
| 15 | +const { build } = require('esbuild'); |
| 16 | +const babel = require('@babel/core'); |
| 17 | +const { minify } = require('terser'); |
| 18 | +const zlib = require('node:zlib'); |
| 19 | + |
| 20 | +async function main() { |
| 21 | + const root = path.join(__dirname, '..'); |
| 22 | + const pkgRoot = JSON.parse( |
| 23 | + String(await fs.readFile(path.join(root, 'package.json'))) |
| 24 | + ); |
| 25 | + const mangleConfig = JSON.parse( |
| 26 | + String(await fs.readFile(path.join(root, 'mangle.json'))) |
| 27 | + ); |
| 28 | + |
| 29 | + const packages = [ |
| 30 | + { |
| 31 | + id: 'core', |
| 32 | + dir: '.', |
| 33 | + entry: 'src/index.js', |
| 34 | + base: 'preact', |
| 35 | + globalName: pkgRoot.amdName || 'preact' |
| 36 | + }, |
| 37 | + { |
| 38 | + id: 'hooks', |
| 39 | + dir: 'hooks', |
| 40 | + entry: 'src/index.js', |
| 41 | + base: 'hooks', |
| 42 | + globalName: 'preactHooks' |
| 43 | + }, |
| 44 | + { |
| 45 | + id: 'compat', |
| 46 | + dir: 'compat', |
| 47 | + entry: 'src/index.js', |
| 48 | + base: 'compat', |
| 49 | + globalName: 'preactCompat' |
| 50 | + }, |
| 51 | + { |
| 52 | + id: 'debug', |
| 53 | + dir: 'debug', |
| 54 | + entry: 'src/index.js', |
| 55 | + base: 'debug', |
| 56 | + globalName: 'preactDebug' |
| 57 | + }, |
| 58 | + { |
| 59 | + id: 'devtools', |
| 60 | + dir: 'devtools', |
| 61 | + entry: 'src/index.js', |
| 62 | + base: 'devtools', |
| 63 | + globalName: 'preactDevtools' |
| 64 | + }, |
| 65 | + { |
| 66 | + id: 'test-utils', |
| 67 | + dir: 'test-utils', |
| 68 | + entry: 'src/index.js', |
| 69 | + base: 'testUtils', |
| 70 | + globalName: 'preactTestUtils' |
| 71 | + }, |
| 72 | + { |
| 73 | + id: 'jsx-runtime', |
| 74 | + dir: 'jsx-runtime', |
| 75 | + entry: 'src/index.js', |
| 76 | + base: 'jsxRuntime', |
| 77 | + globalName: 'preactJsxRuntime' |
| 78 | + } |
| 79 | + ]; |
| 80 | + |
| 81 | + const args = process.argv.slice(2).filter(Boolean); |
| 82 | + let selected = packages; |
| 83 | + if (args.length && !args.includes('all')) { |
| 84 | + const wanted = new Set(args); |
| 85 | + selected = packages.filter(p => wanted.has(p.id)); |
| 86 | + const missing = Array.from(wanted).filter( |
| 87 | + x => !selected.some(p => p.id === x) |
| 88 | + ); |
| 89 | + if (missing.length) { |
| 90 | + console.error('[build] Unknown package id(s):', missing.join(', ')); |
| 91 | + process.exit(1); |
| 92 | + } |
| 93 | + } |
| 94 | + |
| 95 | + const rename = {}; |
| 96 | + for (const original in mangleConfig.props.props) { |
| 97 | + let name = original; |
| 98 | + if (name.startsWith('$')) name = name.slice(1); |
| 99 | + rename[name] = mangleConfig.props.props[original]; |
| 100 | + } |
| 101 | + |
| 102 | + const babelCache = new Map(); |
| 103 | + function babelRenamePlugin() { |
| 104 | + return { |
| 105 | + name: 'babel-rename-properties', |
| 106 | + setup(buildApi) { |
| 107 | + buildApi.onLoad({ filter: /\/src\/.*\.js$/ }, async args => { |
| 108 | + const code = String(await fs.readFile(args.path)); |
| 109 | + const cacheKey = args.path + '::' + code; |
| 110 | + const cached = babelCache.get(cacheKey); |
| 111 | + if (cached) return cached; |
| 112 | + const result = await babel.transformAsync(code, { |
| 113 | + filename: args.path, |
| 114 | + babelrc: false, |
| 115 | + configFile: false, |
| 116 | + presets: [], |
| 117 | + plugins: [['babel-plugin-transform-rename-properties', { rename }]] |
| 118 | + }); |
| 119 | + const out = { contents: result.code, loader: 'js' }; |
| 120 | + babelCache.set(cacheKey, out); |
| 121 | + return out; |
| 122 | + }); |
| 123 | + } |
| 124 | + }; |
| 125 | + } |
| 126 | + |
| 127 | + const reserved = mangleConfig.minify.mangle.properties.reserved; |
| 128 | + Object.values(mangleConfig.props.props).forEach(n => reserved.push(n)); |
| 129 | + const terserBase = { |
| 130 | + toplevel: true, |
| 131 | + compress: { |
| 132 | + ...mangleConfig.minify.compress, |
| 133 | + unsafe: true, |
| 134 | + pure_getters: true, |
| 135 | + keep_infinity: true, |
| 136 | + unsafe_proto: true, |
| 137 | + passes: 10, |
| 138 | + toplevel: true |
| 139 | + }, |
| 140 | + mangle: { |
| 141 | + toplevel: true, |
| 142 | + properties: { ...mangleConfig.minify.mangle.properties, reserved } |
| 143 | + }, |
| 144 | + format: { |
| 145 | + shebang: true, |
| 146 | + shorthand: true, |
| 147 | + wrap_func_args: false, |
| 148 | + comments: /^\s*([@#]__[A-Z]+__\s*$|@cc_on)/, |
| 149 | + preserve_annotations: true |
| 150 | + }, |
| 151 | + module: true, |
| 152 | + sourceMap: true |
| 153 | + }; |
| 154 | + |
| 155 | + async function minifyFile(inputPath, outputPath, { module }) { |
| 156 | + const code = String(await fs.readFile(inputPath)); |
| 157 | + const result = await minify(code, { |
| 158 | + ...terserBase, |
| 159 | + module, |
| 160 | + sourceMap: { |
| 161 | + filename: path.basename(outputPath), |
| 162 | + url: path.basename(outputPath) + '.map' |
| 163 | + } |
| 164 | + }); |
| 165 | + await fs.writeFile(outputPath, result.code + '\n'); |
| 166 | + if (result.map) |
| 167 | + await fs.writeFile( |
| 168 | + outputPath + '.map', |
| 169 | + typeof result.map === 'string' ? result.map : JSON.stringify(result.map) |
| 170 | + ); |
| 171 | + } |
| 172 | + |
| 173 | + const sizeRows = []; |
| 174 | + |
| 175 | + for (const pkg of selected) { |
| 176 | + const absDir = path.join(root, pkg.dir); |
| 177 | + const distDir = path.join(absDir, 'dist'); |
| 178 | + const entryAbs = path.join(absDir, pkg.entry); |
| 179 | + await fs.mkdir(distDir, { recursive: true }); |
| 180 | + |
| 181 | + const shared = { |
| 182 | + entryPoints: [entryAbs], |
| 183 | + external: [ |
| 184 | + 'preact', |
| 185 | + 'preact/jsx-runtime', |
| 186 | + 'preact/compat', |
| 187 | + 'preact/hooks', |
| 188 | + 'preact/debug', |
| 189 | + 'preact/test-utils', |
| 190 | + 'preact/devtools', |
| 191 | + 'preact-render-to-string' |
| 192 | + ], |
| 193 | + bundle: true, |
| 194 | + sourcemap: true, |
| 195 | + sourcesContent: true, |
| 196 | + plugins: [babelRenamePlugin()], |
| 197 | + target: ['es2020'], |
| 198 | + define: { 'process.env.NODE_ENV': '"production"' } |
| 199 | + }; |
| 200 | + |
| 201 | + await build({ |
| 202 | + ...shared, |
| 203 | + format: 'esm', |
| 204 | + outfile: path.join(distDir, pkg.base + '.mjs'), |
| 205 | + minify: false |
| 206 | + }); |
| 207 | + |
| 208 | + // TODO: use es-module-lexer to transform |
| 209 | + // ESM into CJS |
| 210 | + |
| 211 | + // TODO: ensure UMD build uses globals rather than inlining |
| 212 | + await build({ |
| 213 | + ...shared, |
| 214 | + format: 'iife', |
| 215 | + globalName: pkg.globalName, |
| 216 | + outfile: path.join(distDir, pkg.base + '.umd.js'), |
| 217 | + minify: false |
| 218 | + }); |
| 219 | + |
| 220 | + await Promise.all([ |
| 221 | + minifyFile( |
| 222 | + path.join(distDir, pkg.base + '.js'), |
| 223 | + path.join(distDir, pkg.base + '.js'), |
| 224 | + { module: true } |
| 225 | + ), |
| 226 | + minifyFile( |
| 227 | + path.join(distDir, pkg.base + '.mjs'), |
| 228 | + path.join(distDir, pkg.base + '.mjs'), |
| 229 | + { module: true } |
| 230 | + ), |
| 231 | + minifyFile( |
| 232 | + path.join(distDir, pkg.base + '.umd.js'), |
| 233 | + path.join(distDir, pkg.base + '.umd.js'), |
| 234 | + { module: false } |
| 235 | + ) |
| 236 | + ]); |
| 237 | + |
| 238 | + for (const ext of ['.js', '.mjs', '.umd.js']) { |
| 239 | + const file = pkg.base + ext; |
| 240 | + const abs = path.join(distDir, file); |
| 241 | + const code = await fs.readFile(abs); |
| 242 | + const raw = code.length; |
| 243 | + const gz = zlib.gzipSync(code).length; |
| 244 | + const br = zlib.brotliCompressSync(code, { |
| 245 | + params: { [zlib.constants.BROTLI_PARAM_QUALITY]: 11 } |
| 246 | + }).length; |
| 247 | + sizeRows.push({ |
| 248 | + pkg: pkg.id, |
| 249 | + file: path.relative(root, abs), |
| 250 | + raw, |
| 251 | + gz, |
| 252 | + br |
| 253 | + }); |
| 254 | + } |
| 255 | + } |
| 256 | + |
| 257 | + console.log('\n[build] Artifact sizes (bytes):'); |
| 258 | + console.log(['Package', 'File', 'Raw', 'Gzip', 'Brotli'].join('\t')); |
| 259 | + for (const row of sizeRows) |
| 260 | + console.log([row.pkg, row.file, row.raw, row.gz, row.br].join('\t')); |
| 261 | + console.log('\nDone.'); |
| 262 | +} |
| 263 | + |
| 264 | +main().catch(err => { |
| 265 | + console.error('[build] Failed:', err); |
| 266 | + process.exit(1); |
| 267 | +}); |
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