How to use the buildExternalHelpers function from @babel/core

gulpfile.js

GitHub: webmastuhB/mui

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  });
}


function buildCdnReact(dirname) {
  var s = babelCore.buildExternalHelpers(reactBabelHelpers, 'global');

  return makeTask('build-cdn-react: ' + dirname, function() {
    return browserifyStream(
      './build-targets/cdn-react.js',

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gulpfile.js

GitHub: muicss/mui

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  });
}


function buildCdnAngular(dirname) {
  var s = babelCore.buildExternalHelpers(angularBabelHelpers, 'global');

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+ 15 other calls in file

rollup-plugin-bundled-babel-helpers.js

GitHub: divriots/open-wc

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}

function createHelperModule(helpers, format, minify) {
  const helpersWithDependencies = getHelpersWithDependencies(helpers);
  const addRegeneratorRuntime = helpersWithDependencies.includes('regeneratorRuntime');
  let helperSource = buildExternalHelpers(
    helpersWithDependencies.filter(h => h !== 'regeneratorRuntime'),
    'module',
  );

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+ 3 other calls in file

generate-helpers.js

GitHub: web-padawan/tools

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  'interopRequireWildcard',
];

minifyAndWriteJs(
  // @ts-ignore
  babelCore.buildExternalHelpers([...mainHelpers, ...amdHelpers]),
      'babel-helpers-full.min.js');

minifyAndWriteJs(
  // @ts-ignore

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+ 3 other calls in file

gulpfile.js

GitHub: david1asher/polymer-build

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  'toArray',
  'toConsumableArray',
];

gulp.task('gen-babel-helpers', () => {
  const helpersCode = babelCore.buildExternalHelpers(babelHelperWhitelist);
  const minified =
      babelCore.transform(helpersCode, {presets: [babelPresetMinify]}).code;
  fs.mkdirpSync('./lib/');
  fs.writeFileSync('./lib/babel-helpers.min.js', minified, {encoding: 'utf-8'});

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generate-helpers.js

GitHub: lkraav/polymer3-webpack-starter

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  {},
  { simplifyComparisons: false }
);

minifyAndWriteJs(
  babelCore.buildExternalHelpers(helperWhitelist),
  'babel-helpers.min.js'
);

/**

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sfc.js

GitHub: wya-team/wya-vc

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const HELPERS = '\0rollupPluginBabelHelpers.js';
return {
    name: 'import2require',
    options: () => {},
    resolveId: id => (id !== HELPERS ? null : id),
    load: id => (id !== HELPERS ? null : babel.buildExternalHelpers(null, 'module')),
    transform(code, filename) {
        if (filename === HELPERS) return null;
        // TODO: 优化匹配规则
        if (code.includes(` import(`)) {

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rollup-plugin-babel.js

GitHub: fquffio/rna-cli

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    if (id === BABEL_HELPERS) return id;
},

load(id) {
    if (id === BABEL_HELPERS) {
        return babelCore.buildExternalHelpers(null, 'module');
    }
    return;
},

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