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没有实体无法转换节点

react-testing-library create-react-app babel reactjs javascript

3

dan-klasson · 技术社区 · 7 年前

我想逃跑 the example 在里面 react-testing-library 测试反应钩。但在这方面似乎失败了:

testHook(() => ({count, increment} = useCounter({ initialCount: 2 })))

好像和巴贝尔有关。尝试了谷歌搜索,但找不到任何人似乎有同样的问题。我用安装了webpack create-react-app 。

这是StackTrace:

 â Test suite failed to run

  Can't convert node without a body

  at NodePath.ensureBlock (node_modules/@babel/traverse/lib/path/conversion.js:64:11)
  at Scope.push (node_modules/@babel/traverse/lib/scope/index.js:727:12)
  at Object.toSequenceExpression (node_modules/@babel/types/lib/converters/toSequenceExpression.js:19:11)
  at NodePath.replaceExpressionWithStatements (node_modules/@babel/traverse/lib/path/replacement.js:203:36)
  at NodePath.insertAfter (node_modules/@babel/traverse/lib/path/modification.js:128:17)
  at NodePath.replaceWithMultiple (node_modules/@babel/traverse/lib/path/replacement.js:85:22)
  at PluginPass.AssignmentExpression (node_modules/babel-preset-react-app/node_modules/@babel/plugin-transform-destructuring/lib/index.js:433:14)
  at newFn (node_modules/@babel/traverse/lib/visitors.js:193:21)
  at NodePath._call (node_modules/@babel/traverse/lib/path/context.js:53:20)
  at NodePath.call (node_modules/@babel/traverse/lib/path/context.js:40:17)

1 回复 | 直到 7 年前

1

3

dan-klasson 7 年前

我不知道如何解决巴别塔问题,但如果你写:

testHook(() => { return ({count, increment} = useCounter({ initialCount: 2 }))})

而不是:

testHook(() => ({count, increment} = useCounter({ initialCount: 2 })))

它起作用了。可能他们正在使用一些高级ES6语法糖,而您当前的设置没有。希望有帮助!