“未在全局范围内找到提取并且未通过提取器"在流星中使用 spacejam 时 [英] "fetch is not found globally and no fetcher passed" when using spacejam in meteor

问题描述

我正在编写单元测试来检查我的 api.在我将 git test 分支与我的 dev 分支合并之前，一切都很好，但后来我开始遇到这个错误:

I'm writing unit tests to check my api. Before I merged my git test branch with my dev branch everything was fine, but then I started to get this error:

App running at: http://localhost:4096/
spacejam: meteor is ready
spacejam: spawning phantomjs
phantomjs: Running tests at http://localhost:4096/local using test-in-console
phantomjs: Error: fetch is not found globally and no fetcher passed, to fix pass a fetch for
  your environment like https://www.npmjs.com/package/unfetch.

  For example:
    import fetch from 'unfetch';
    import { createHttpLink } from 'apollo-link-http';

    const link = createHttpLink({ uri: '/graphql', fetch: fetch });

这是我的 api.test.js 文件的一部分:

Here's a part of my api.test.js file:

describe('GraphQL API for users', () => {
    before(() => {
      StubCollections.add([Meteor.users]);
      StubCollections.stub();
    });

    after(() => {
      StubCollections.restore();
    });

    it('should do the work', () => {
      const x = 'hello';
      expect(x).to.be.a('string');
    });
  });

最有趣的是我的测试中甚至没有 graphql(尽管我在我的 meteor 包中使用了它)不幸的是，我没有找到足够的信息(除了 apollo-link-http docs 有例子，但仍然让我困惑).我确实尝试使用该示例，但它没有帮助，我仍然遇到相同的错误

The funniest thing is that I don't even have graphql in my tests (although, I use it in my meteor package) Unfortunately, I didn't to find enough information (apart from apollo-link-http docs that has examples, but still puzzles me). I did try to use that example, but it didn't help and I still get the same error

推荐答案

如果您使用 nodejs，请执行以下操作:

If you're using nodejs do the following:

安装node-fetch

npm install --save node-fetch

将以下行添加到 index.js:

global.fetch = require('node-fetch');

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