text: "use strict";
  
  var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
  
  var _asyncToGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncToGenerator"));
  
  function _createForOfIteratorHelper(o, allowArrayLike) { var it; if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = o[Symbol.iterator](); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it.return != null) it.return(); } finally { if (didErr) throw err; } } }; }
  
  function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
  
  function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
  
  const Asset = require('../Asset');
  
  const commandExists = require('command-exists');
  
  const localRequire = require('../utils/localRequire');
  
  const _require = require('terser'),
        minify = _require.minify;
  
  const path = require('path');
  
  const spawn = require('cross-spawn');
  
  class ElmAsset extends Asset {
    constructor(name, options) {
      super(name, options);
      this.type = 'js';
    }
  
    parse() {
      var _this = this;
  
      return (0, _asyncToGenerator2.default)(function* () {
        let options = {
          cwd: path.dirname(_this.name)
        }; // If elm is not installed globally, install it locally.
  
        try {
          yield commandExists('elm');
        } catch (err) {
          yield localRequire('elm', _this.name);
          options.pathToElm = path.join(path.dirname(require.resolve('elm')), 'bin', 'elm');
        }
  
        _this.elm = yield localRequire('node-elm-compiler', _this.name); // Ensure that an elm.json file exists, and initialize one if not.
  
        let elmConfig = yield _this.getConfig(['elm.json'], {
          load: false
        });
  
        if (!elmConfig) {
          yield _this.createElmConfig(options); // Ensure we are watching elm.json for changes
  
          yield _this.getConfig(['elm.json'], {
            load: false
          });
        }
  
        options.debug = !_this.options.production;
  
        if (_this.options.minify) {
          options.optimize = true;
        }
  
        _this.elmOpts = options;
      })();
    }
  
    collectDependencies() {
      var _this2 = this;
  
      return (0, _asyncToGenerator2.default)(function* () {
        let dependencies = yield _this2.elm.findAllDependencies(_this2.name);
  
        var _iterator = _createForOfIteratorHelper(dependencies),
            _step;
  
        try {
          for (_iterator.s(); !(_step = _iterator.n()).done;) {
            let dependency = _step.value;
  
            _this2.addDependency(dependency, {
              includedInParent: true
            });
          }
        } catch (err) {
          _iterator.e(err);
        } finally {
          _iterator.f();
        }
      })();
    }
  
    createElmConfig(options) {
      return (0, _asyncToGenerator2.default)(function* () {
        let cp = spawn(options.pathToElm || 'elm', ['init']);
        cp.stdin.write('y\n');
        return new Promise((resolve, reject) => {
          cp.on('error', reject);
          cp.on('close', function (code) {
            if (code !== 0) {
              return reject(new Error('elm init failed.'));
            }
  
            return resolve();
          });
        });
      })();
    }
  
    generate() {
      var _this3 = this;
  
      return (0, _asyncToGenerator2.default)(function* () {
        let compiled = yield _this3.elm.compileToString(_this3.name, _this3.elmOpts);
        _this3.contents = compiled.toString();
  
        if (_this3.options.hmr) {
          let _yield$localRequire = yield localRequire('elm-hot', _this3.name),
              inject = _yield$localRequire.inject;
  
          _this3.contents = inject(_this3.contents);
        }
  
        let output = _this3.contents;
  
        if (_this3.options.minify) {
          output = pack(output);
        }
  
        return {
          [_this3.type]: output
        }; // Recommended minification
        // Based on:
        // - http://elm-lang.org/0.19.0/optimize
  
        function pack(source) {
          let options = {
            compress: {
              keep_fargs: false,
              passes: 2,
              pure_funcs: ['F2', 'F3', 'F4', 'F5', 'F6', 'F7', 'F8', 'F9', 'A2', 'A3', 'A4', 'A5', 'A6', 'A7', 'A8', 'A9'],
              pure_getters: true,
              unsafe: true,
              unsafe_comps: true
            },
            mangle: true,
            rename: false
          };
          let result = minify(source, options);
  
          if (result.error) {
            throw result.error;
          }
  
          return result.code;
        }
      })();
    }
  
    generateErrorMessage(err) {
      // The generated stack is not useful, but other code may
      // expect it and try to print it, so make it an empty string.
      err.stack = '';
      return err;
    }
  
  }
  
  module.exports = ElmAsset;