babel-preset-playlyfe/lib/presets/es.js

Babel preset for playlyfe

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.DEFAULT_OPTS = exports.Opts = void 0;

var _presetEnv = _interopRequireDefault(require("@babel/preset-env"));

var _presetFlow = _interopRequireDefault(require("@babel/preset-flow"));

var _pluginProposalClassProperties = _interopRequireDefault(require("@babel/plugin-proposal-class-properties"));

var _pluginProposalObjectRestSpread = _interopRequireDefault(require("@babel/plugin-proposal-object-rest-spread"));

var _flowRuntime = _interopRequireDefault(require("flow-runtime"));

const Opts = _flowRuntime.default.type("Opts", _flowRuntime.default.exactObject(_flowRuntime.default.property("flow", _flowRuntime.default.boolean()), _flowRuntime.default.property("asyncAwait", _flowRuntime.default.boolean()), _flowRuntime.default.property("modules", _flowRuntime.default.union(_flowRuntime.default.string("amd"), _flowRuntime.default.string("umd"), _flowRuntime.default.string("systemjs"), _flowRuntime.default.string("commonjs"), _flowRuntime.default.boolean(false))), _flowRuntime.default.property("targets", _flowRuntime.default.object()), _flowRuntime.default.property("useBuiltIns", _flowRuntime.default.boolean()), _flowRuntime.default.property("debug", _flowRuntime.default.boolean())));

exports.Opts = Opts;
const DEFAULT_OPTS = Opts.assert(Object.freeze({
  flow: true,
  asyncAwait: false,
  modules: 'commonjs',
  targets: {},
  useBuiltIns: true,
  debug: false
}));
exports.DEFAULT_OPTS = DEFAULT_OPTS;

var _default = _flowRuntime.default.annotate((context, opts) => {
  let _contextType = _flowRuntime.default.any();

  let _optsType = Opts;

  _flowRuntime.default.param("context", _contextType).assert(context);

  _flowRuntime.default.param("opts", _optsType).assert(opts);

  const {
    targets,
    modules,
    debug,
    useBuiltIns,
    asyncAwait
  } = opts;
  return {
    presets: [[_presetEnv.default, {
      targets,
      modules,
      debug,
      useBuiltIns: useBuiltIns ? 'entry' : false,
      corejs: 3,
      // only enable generator when asyncAwait enabled
      exclude: !asyncAwait // eslint-disable-line no-negated-condition
      ? ['transform-regenerator', 'transform-async-to-generator'] : []
    }], opts.flow ? _presetFlow.default : null],
    plugins: [// add class properties support
    // NOTE: keeping loose: true see issue: https://github.com/facebook/create-react-app/issues/4263
    [_pluginProposalClassProperties.default, {
      loose: true
    }], // add object rest spread support
    // keeping useBuiltIns: true & loose: false to use Object.assign which is fine for our use case
    [_pluginProposalObjectRestSpread.default, {
      useBuiltIns: true,
      loose: true
    }]].filter(Boolean)
  };
}, _flowRuntime.default.function(_flowRuntime.default.param("context", _flowRuntime.default.any()), _flowRuntime.default.param("opts", Opts)));

exports.default = _default;