"use strict";

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

var _helperPluginUtils = require("@babel/helper-plugin-utils");

var _pluginSyntaxDynamicImport = _interopRequireDefault(require("@babel/plugin-syntax-dynamic-import"));

var _package = require("../package.json");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const SUPPORTED_MODULES = ["commonjs", "amd", "systemjs"];
const MODULES_NOT_FOUND = `\
@babel/plugin-proposal-dynamic-import depends on a modules
transform plugin. Supported plugins are:
 - @babel/plugin-transform-modules-commonjs ^7.4.0
 - @babel/plugin-transform-modules-amd ^7.4.0
 - @babel/plugin-transform-modules-systemjs ^7.4.0

If you are using Webpack or Rollup and thus don't want
Babel to transpile your imports and exports, you can use
the @babel/plugin-syntax-dynamic-import plugin and let your
bundler handle dynamic imports.
`;

var _default = (0, _helperPluginUtils.declare)(api => {
  api.assertVersion(7);
  return {
    name: "proposal-dynamic-import",
    inherits: _pluginSyntaxDynamicImport.default,

    pre() {
      this.file.set("@babel/plugin-proposal-dynamic-import", _package.version);
    },

    visitor: {
      Program() {
        const modules = this.file.get("@babel/plugin-transform-modules-*");

        if (!SUPPORTED_MODULES.includes(modules)) {
          throw new Error(MODULES_NOT_FOUND);
        }
      }

    }
  };
});

exports.default = _default;