Question

我正在尝试有选择地导出此模块，该模块在测试中失败，并以其他方式导出空白模块（以便测试不会出错）。遵循此SO答案：Skip import when react component created by jest

let Analytics;
let Segment;
if (process.env.JEST_WORKER_ID == undefined){
  Analytics = require('@segment/analytics.js-core');
  Segment = require('@segment/analytics.js-integration-segmentio');
}
else {
  // If we're testing...
  Analytics = {
    page() {},
    track() {},
    identify() {},
    initialize() {},
    addIntegration() {},
  };
  Segment = {};
}    
console.log(Analytics);
export {Analytics};

如果我删除了导出，那么在运行开玩笑的测试时，console.log（）这行会告诉我这一点：

{ page: [Function: page],
  track: [Function: track],
  identify: [Function: identify],
  initialize: [Function: initialize],
  addIntegration: [Function: addIntegration] }

但是，当我导出时，会出现以下问题：

SyntaxError: index.js: Export 'Analytics' is not defined (36:8)

我还有另一种出口方式吗？知道为什么我会收到此语法错误吗？我会提到，在运行在本地进行导入的应用程序时，一切正常。

Answer 1

尝试在导出时明确命名导出，所以

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未定义导出“ MyModule”-在Jest测试中

1 个答案: