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箭头函数中 return 不带参数时导致 fecs 检查报错 #349

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Sheetaa opened this issue Apr 30, 2019 · 0 comments

Sheetaa commented Apr 30, 2019

报错信息：

TypeError: Cannot read property 'type' of null(~/lib/js/rules/arrow-body-style.js).	(syntax)

TypeError: Cannot read property 'type' of null
     at validate (/Users/xxx/xxx/fecs/lib/js/rules/arrow-body-style.js:77:54)

引发出错的代码片段：

err => {
    return;
}

分析：

if (asNeeded && firstNode && firstNode.type === 'ReturnStatement') {
     if (!needMaps[firstNode.argument.type]) {
          report(node);
     }
}

firstNode.argument 为 null 导致，应该需要提前判断一下吧

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