bili/dist/babel.js

A zero configuration library bundler.

'use strict';

var babelPluginAlterObjectAssign = ({ types: t }) => {
  const parseIdentifier = id => id
    .split('.')
    .map(name => t.identifier(name))
    .reduce((object, property) => t.memberExpression(object, property));

  return {
    visitor: {
      MemberExpression(path, { opts: { objectAssign } }) {
        if (objectAssign && path.node.object.name === 'Object' && path.node.property.name === 'assign') {
          path.replaceWith(parseIdentifier(objectAssign));
        }
      }
    }
  }
};

const ENV = process.env.BABEL_ENV || process.env.NODE_ENV;
var preset = ((context, {
  asyncToPromises = process.env.BILI_ASYNC_TO_PROMISES,
  jsx = process.env.BILI_JSX,
  objectAssign = process.env.BILI_OBJECT_ASSIGN,
  minimal = process.env.BILI_MINIMAL
} = {}) => {
  const presets = [!minimal && [require('@babel/preset-env').default, {
    modules: ENV === 'test' ? 'auto' : false,
    exclude: ['transform-regenerator', 'transform-async-to-generator', 'proposal-object-rest-spread']
  }], require('@babel/preset-typescript')].filter(Boolean);
  const plugins = [[require('@babel/plugin-transform-react-jsx'), {
    pragma: jsx === 'react' ? 'React.createElement' : jsx
  }], [require('@babel/plugin-proposal-object-rest-spread'), {
    useBuiltIns: true,
    loose: true
  }], [require('@babel/plugin-proposal-optional-chaining')], [require('@babel/plugin-proposal-nullish-coalescing-operator')], [babelPluginAlterObjectAssign, {
    objectAssign
  }], asyncToPromises && require('babel-plugin-transform-async-to-promises')].filter(Boolean);
  return {
    presets,
    plugins
  };
});

module.exports = preset;