@metalsmith/js-bundle/lib/index.cjs.map

A metalsmith plugin that bundles your JS using esbuild

{"version":3,"file":"index.cjs","sources":["../src/es5.js","../src/index.js"],"sourcesContent":["import { transform, loadOptions } from '@babel/core'\n\nexport default function es5PluginInit() {\n  return function es5Plugin(files, ms, done) {\n    const isDev = ms.env('NODE_ENV') === 'development'\n    const transforms = []\n    const options = loadOptions({\n      envName: ms.env('NODE_ENV'),\n      presets: [\n        [\n          '@babel/preset-env',\n          {\n            useBuiltIns: 'entry',\n            corejs: '3.22'\n          }\n        ]\n      ],\n      targets: '> 0.25%, not dead',\n      minified: !isDev,\n      comments: isDev,\n      cwd: ms.directory()\n      //inputSourceMap\n    })\n    Object.values(files).forEach((file) => {\n      if (file.__babelPostProcess) {\n        transforms.push(\n          new Promise((resolve, reject) => {\n            transform(file.contents.toString(), options, (err, result) => {\n              if (err) reject(err)\n              file.contents = Buffer.from(result.code)\n              delete file.__babelPostProcess\n              resolve()\n            })\n          })\n        )\n      }\n    })\n    Promise.all(transforms)\n      .then(() => done())\n      .catch(done)\n  }\n}\n","import { build } from 'esbuild'\nimport { relative, extname } from 'path'\nimport es5Plugin from './es5.js'\n\nconst debugNs = '@metalsmith/js-bundle'\n\n/**\n * @typedef {import('esbuild').BuildOptions} Options\n */\n\n/**\n * Normalize plugin options\n * @param {Options} [options]\n * @param {import('metalsmith').Metalsmith} metalsmith\n * @returns {Object}\n */\nfunction normalizeOptions(options = {}, metalsmith, debug) {\n  const entryPoints = options.entries || {}\n  const msDir = metalsmith.directory()\n  const isProd = metalsmith.env('NODE_ENV') !== 'development'\n  const define = Object.entries(options.define || metalsmith.env()).reduce((acc, [name, value]) => {\n    if (typeof value === 'undefined') {\n      debug.warn('Define option \"%s\" value is undefined', name)\n      acc[`process.env.${name}`] = 'undefined'\n      return acc\n    }\n    // see notes at https://esbuild.github.io/api/#define, string values require explicit quotes\n    acc[`process.env.${name}`] =\n      typeof value === 'string'\n        ? `'${value}'`\n        : ['boolean', 'number', 'function'].includes(typeof value)\n          ? value.toString()\n          : JSON.stringify(value)\n    return acc\n  }, {})\n\n  /** @type {Options} */\n  const defaults = {\n    bundle: true,\n    minify: isProd,\n    sourcemap: !isProd,\n    platform: 'browser',\n    target: 'es6',\n    assetNames: '[dir]/[name]',\n    drop: isProd ? ['console', 'debugger'] : []\n  }\n\n  /** @type {Options} */\n  const overwrites = {\n    entryPoints,\n    absWorkingDir: msDir,\n    outdir: relative(msDir, metalsmith.destination()),\n    write: false,\n    metafile: true,\n    define\n  }\n\n  // eslint-disable-next-line no-unused-vars\n  const { entries, ...otherOptions } = options\n\n  return {\n    ...defaults,\n    ...otherOptions,\n    ...overwrites\n  }\n}\n\n/**\n * A metalsmith plugin that bundles your JS using [esbuild](https://esbuild.github.io)\n * @example\n *\n * metalsmith.use(\n *   jsBundle({ entries: {\n *     index: 'lib/index.js',\n *     'second/src/file': 'second/bundle/output.js'\n *   }})\n * )\n * @param {Options} options\n * @returns {import('metalsmith').Plugin}\n */\nfunction initJsBundle(options = {}) {\n  // esbuild does not support ES5 compilation\n  // to avoid it throw an error, force at least ES6 and let esbuild do all the bundling, then postprocess and minify with babel\n  let babelPostProcess = false\n  if (options.target === 'es5') {\n    babelPostProcess = true\n    options.target = 'es6'\n    options.minify = false\n  }\n\n  return function jsBundle(files, metalsmith, done) {\n    const debug = metalsmith.debug(debugNs)\n    const normalizedOptions = normalizeOptions(options, metalsmith, debug)\n    const entrypoints = normalizedOptions.entryPoints\n\n    debug('Running with options %O', normalizedOptions)\n    if (Object.keys(entrypoints).length === 0) {\n      debug.warn('No files to process, skipping.')\n      done()\n      return\n    }\n\n    const src = metalsmith.source()\n    const dest = metalsmith.destination()\n\n    const isFullyInSource = Object.values(entrypoints).every((sourcepath) => {\n      return metalsmith.path(sourcepath).startsWith(src)\n    })\n\n    if (isFullyInSource) {\n      debug.info('All entries to bundle are in metalsmith.source(), setting `outbase` to metalsmith.source()')\n      normalizedOptions.outbase = src\n    }\n\n    normalizedOptions.entryPoints = Object.entries(entrypoints).reduce((mapped, current) => {\n      const [dest, src] = current\n      mapped[dest] = src\n      return mapped\n    }, {})\n\n    const sourceRelPath = relative(metalsmith.directory(), src)\n\n    build(normalizedOptions)\n      .then((result) => {\n        // the lines below until #L138 must be revisited, they can definitely be simplified.\n        // esbuild outputFiles return absolute paths, while metafile.outputs has a { 'output/path': { inputs: { 'input/path' }, imports: {...}}} format\n        // furthermore it looks like 'file' loader inputs will NOT be removed from the build\n        debug(\n          'Finished processing files %O',\n          result.outputFiles.map((o) => relative(dest, o.path))\n        )\n\n        // first read esbuild metafile to remove the compilation inputs from the build\n        Object.values(result.metafile.outputs).forEach((o) => {\n          if (o.inputs) {\n            metalsmith.match(`${sourceRelPath}/**`, Object.keys(o.inputs)).forEach((input) => {\n              delete files[relative(src, metalsmith.path(input))]\n            })\n          }\n        })\n\n        debug('Adding processed files to build')\n        result.outputFiles.forEach((file) => {\n          // strip the metalsmith.destination()\n          const destPath = relative(dest, file.path)\n\n          files[destPath] = {\n            contents: Buffer.from(file.contents.buffer)\n          }\n          if (babelPostProcess && extname(destPath) === '.js') {\n            files[destPath].__babelPostProcess = true\n          }\n        })\n\n        if (babelPostProcess) {\n          debug('Post-processing with babel')\n          es5Plugin()(files, metalsmith, done)\n        } else {\n          done()\n        }\n      })\n      .catch((err) => {\n        done(err)\n      })\n  }\n}\n\nexport default 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