Question

ES6导入在此文件中有效，但在导入相关文件（例如我的Mongoose用户模型）时会生成意外的令牌import错误。

import mongoose from 'mongoose';
^^^^^^

SyntaxError: Unexpected token import

.babelrc

{
  "presets": [
    ["es2015", { "modules": false }]
  ],
  "plugins": [
    "transform-object-rest-spread",
    "transform-async-to-generator",
    "transform-export-extensions"
  ]
}

的package.json

 "ava": {
    "require": [
      "babel-register"
    ]
  }

users.test.js

import test from 'ava'
import axios from 'axios'

import User from '../../models/user'
import { USER_REGISTRATION_ROUTES } from '../helpers/_test.properties.js'

test('user registration api works', async function (t) {
  const email = `test${Date.now()}@example.com`

  const userRegistrationData = {
    email,
    first_name: "john",
    last_name: "doe",
    password: "password"
  }

  await axios.post(USER_REGISTRATION_ROUTES, userRegistrationData)
    .then(response => {
      const data = response.data.data
      const user = data.user
      t.deepEqual(response.status, 200, 'Verify: response is successful')
      t.deepEqual(data.registered, true, 'Verify: user is registered')
      t.truthy(Object.keys(user).length > 0,
        'Verify: if registered, user object is returned')
      t.truthy(user.authentication_token,
        'Verify: token is generated on successful registration')
    })
    .catch((err) => {
      t.fail(`Cannot make requst to register user ${err}`)
    })

  User.remove({ email }, function (err) {
    if (err) {
      console.log('error')
    } else {
      console.log('success deleting test user')
    }
  })
})

Answer 1

不要认为nodejs支持import。您必须使用require。

const mongoose = require('mongoose');

Answer 2

对我有用的答案是Serge Seletskyy here建议的以下内容。 ES2017功能需要es2017预设，例如async await。

<强> .babelrc

{
  "presets": [
    "es2017",
    "@ava/stage-4",
    "stage-3"
  ],
  "plugins": [
    "transform-runtime"
  ]
}

<强>的package.json

"ava": {
  "require": [
    "babel-register"
  ],
  "babel": "inherit"
}

安装模块

yarn add babel-register babel-preset-es2017 @ava/babel-preset-stage-4 babel-plugin-transform-runtime babel-preset-stage-3 --dev

现在应该运行./node_modules/.bin/ava --verbose

Answer 3

通过.babelrc加载非测试文件，这会应用您的{ "presets": [ ["es2015", { "modules": false }] ], "plugins": [ "transform-object-rest-spread", "transform-async-to-generator", "transform-export-extensions" ], "env": { "test": { "presets": [ ["es2015", { "modules": true }] ] } } }。但是，您已禁用模块转换。我在另一条评论中看到你正在使用Webpack。尝试为Babel添加环境配置，以恢复模块转换。从头到尾：

template <class Element>
class Node {
public:
    Node(const Node& orig);
    Node(Element e);
    const Element& getElement();
    Node<Element>* getNext() const; 
    void setNext(Node<Element> *next);
    Node<Element>* getPrevious() const;
    void setPrevious(Node<Element> *prev);
    ~Node();
private:
    Node <Element>* next;
    Node <Element>* prev;
    Element element; 


};

template <class Element>
Node<Element>::Node(Element e){
    this->element = e;
    this->next = nullptr; 
    this->prev= nullptr;
}
template <class Element>
Node<Element>::~Node(){

}
template <class Element>
const Element& Node<Element>::getElement(){
    return this->element; 
}
template <class Element>
Node<Element>* Node<Element>::getNext() const{
    return this->next;
}
template <class Element>
Node<Element>* Node<Element>::getPrevious() const{
    return this->prev;
}
template <class Element>
void Node<Element>::setNext(Node<Element>* next){
    this->next = next; 
}
template <class Element>
void Node<Element>::setPrevious(Node<Element>* prev){
    this->prev = prev; 
}

这应该适用于最新的AVA版本。

Answer 4

我的Ava版本为1.0.0-beta.4，以下是适用于我的解决方案：

将以下内容添加到package.json

"ava": {
  "require": [
    "@babel/register"
  ]
}

然后npm install --save-dev @babel/register，再次运行测试。

无法使用ava transile来处理相对导入的文件

4 个答案: