parcel-bundler/lib/utils/localRequire.js

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'use strict';

let localRequire = (() => {
  var _ref = _asyncToGenerator(function* (name, path, triedInstall = false) {
    let basedir = dirname(path);
    let key = basedir + ':' + name;
    let resolved = cache.get(key);
    if (!resolved) {
      try {
        resolved = resolve.sync(name, { basedir });
      } catch (e) {
        if (e.code === 'MODULE_NOT_FOUND' && !triedInstall) {
          yield install(path, name);
          return localRequire(name, path, true);
        }
        throw e;
      }
      cache.set(key, resolved);
    }

    return require(resolved);
  });

  return function localRequire(_x, _x2) {
    return _ref.apply(this, arguments);
  };
})();

function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, arguments); return new Promise(function (resolve, reject) { function step(key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { return Promise.resolve(value).then(function (value) { step("next", value); }, function (err) { step("throw", err); }); } } return step("next"); }); }; }

var _require = require('path');

const dirname = _require.dirname;

const resolve = require('resolve');
const install = require('./installPackage');

const cache = new Map();

module.exports = localRequire;