text: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  /**
   * @fileOverview
   * A simple implementation of AMD for weex.
   */
  
  /**
   * amd modules (<id, module> pair)
   *  - id : instance id.
   *  - module: {
   *        name: module name
   *        , factory: module's factory function
   *        , cached: cached module,
   *        , deps: module's dependencies, always be [] under most circumstances.
   *      }
   */
  const modules = {}
  
  const amdService = {
  
    // create a amd service.
    create: (id, env, config) => {
      if (!env.framework.match(/Vue/i)) {
        return
      }
  
      const mod = {}
      modules[id] = mod
      const amdObject = {
  
        /**
         * define a module.
         * @param  {String} name: module name.
         * @param  {Array} deps: dependencies. Always be empty array.
         * @param  {function} factory: factory function.
         */
        define (name, deps, factory) {
          if (mod[name]) {
            console.warn(`[amdService] already defined module: '${name}'`)
          }
          if (typeof deps === 'function') {
            factory = deps
            deps = []
          }
          mod[name] = { name, factory, cached: false, deps }
        },
  
        /**
         * require a module.
         * @param  {string} name - module name.
         */
        require (name) {
          const servMod = mod[name]
          if (!servMod) {
            return console.warn(`[amdService] module '${name}' is not defined.`)
          }
          if (servMod.cached) {
            return servMod.cached
          }
          const exports = {}
          const module = { exports }
          const { deps } = servMod
          let ret
          if (deps && deps.length >= 1) {
            /**
             * to support:
             *   define(name, ['foo', 'bar'], function (foo, bar) { ... })
             */
            const args = deps.map(depName => require(depName))
            ret = servMod.factory(...args)
          }
          else {
            ret = servMod.factory(amdObject.require, exports, module)
          }
          servMod.cached = ret || module.exports
          return servMod.cached
        }
      }
      return { instance: amdObject }
    },
  
    destroy: (id, env) => {
      delete modules[id]
    }
  }
  
  export default amdService
  