function getPlugins()

in scripts/rollup/build.js [296:432]

• 105 lines of code
• 25 McCabe index (conditional complexity)

function getPlugins(
  entry,
  externals,
  updateBabelOptions,
  filename,
  packageName,
  bundleType,
  globalName,
  moduleType,
  pureExternalModules,
  bundle
) {
  const forks = Modules.getForks(bundleType, entry, moduleType, bundle);
  const isProduction = isProductionBundleType(bundleType);
  const isProfiling = isProfilingBundleType(bundleType);
  const isUMDBundle =
    bundleType === UMD_DEV ||
    bundleType === UMD_PROD ||
    bundleType === UMD_PROFILING;
  const isFBWWWBundle =
    bundleType === FB_WWW_DEV ||
    bundleType === FB_WWW_PROD ||
    bundleType === FB_WWW_PROFILING;
  const isRNBundle =
    bundleType === RN_OSS_DEV ||
    bundleType === RN_OSS_PROD ||
    bundleType === RN_OSS_PROFILING ||
    bundleType === RN_FB_DEV ||
    bundleType === RN_FB_PROD ||
    bundleType === RN_FB_PROFILING;
  const shouldStayReadable = isFBWWWBundle || isRNBundle || forcePrettyOutput;
  return [
    // Shim any modules that need forking in this environment.
    useForks(forks),
    // Ensure we don't try to bundle any fbjs modules.
    forbidFBJSImports(),
    // Use Node resolution mechanism.
    resolve({
      skip: externals,
    }),
    // Remove license headers from individual modules
    stripBanner({
      exclude: 'node_modules/**/*',
    }),
    // Compile to ES2015.
    babel(
      getBabelConfig(
        updateBabelOptions,
        bundleType,
        packageName,
        externals,
        !isProduction,
        bundle
      )
    ),
    // Remove 'use strict' from individual source files.
    {
      transform(source) {
        return source.replace(/['"]use strict["']/g, '');
      },
    },
    // Turn __DEV__ and process.env checks into constants.
    replace({
      __DEV__: isProduction ? 'false' : 'true',
      __PROFILE__: isProfiling || !isProduction ? 'true' : 'false',
      __UMD__: isUMDBundle ? 'true' : 'false',
      'process.env.NODE_ENV': isProduction ? "'production'" : "'development'",
      __EXPERIMENTAL__,
    }),
    // The CommonJS plugin *only* exists to pull "art" into "react-art".
    // I'm going to port "art" to ES modules to avoid this problem.
    // Please don't enable this for anything else!
    isUMDBundle && entry === 'react-art' && commonjs(),
    // Apply dead code elimination and/or minification.
    isProduction &&
      closure({
        compilation_level: 'SIMPLE',
        language_in: 'ECMASCRIPT_2015',
        language_out:
          bundleType === BROWSER_SCRIPT ? 'ECMASCRIPT5' : 'ECMASCRIPT5_STRICT',
        env: 'CUSTOM',
        warning_level: 'QUIET',
        apply_input_source_maps: false,
        use_types_for_optimization: false,
        process_common_js_modules: false,
        rewrite_polyfills: false,
        inject_libraries: false,

        // Don't let it create global variables in the browser.
        // https://github.com/facebook/react/issues/10909
        assume_function_wrapper: !isUMDBundle,
        renaming: !shouldStayReadable,
      }),
    // HACK to work around the fact that Rollup isn't removing unused, pure-module imports.
    // Note that this plugin must be called after closure applies DCE.
    isProduction && stripUnusedImports(pureExternalModules),
    // Add the whitespace back if necessary.
    shouldStayReadable &&
      prettier({
        parser: 'babel',
        singleQuote: false,
        trailingComma: 'none',
        bracketSpacing: true,
      }),
    // License and haste headers, top-level `if` blocks.
    {
      renderChunk(source) {
        return Wrappers.wrapBundle(
          source,
          bundleType,
          globalName,
          filename,
          moduleType,
          bundle.wrapWithModuleBoundaries
        );
      },
    },
    // Record bundle size.
    sizes({
      getSize: (size, gzip) => {
        const currentSizes = Stats.currentBuildResults.bundleSizes;
        const recordIndex = currentSizes.findIndex(
          record =>
            record.filename === filename && record.bundleType === bundleType
        );
        const index = recordIndex !== -1 ? recordIndex : currentSizes.length;
        currentSizes[index] = {
          filename,
          bundleType,
          packageName,
          size,
          gzip,
        };
      },
    }),
  ].filter(Boolean);
}