javascript - 验证匹配不能为空

Question

javascript linter 是否有可能判断正则表达式是否总是产生非空匹配？

s.match(/\w*/)[0]           // valid
s.match(/\w+/)[0]           // invalid
s.match(/id(\d{7})/)[1]     // invalid
s.match(/id(\d{7})|$/)[1]   // valid

PS:Same question in Russian.

Answer 1

不，eslint 不能分析这样的代码，至少不能开箱即用。

Code linting is a type of static analysis that is frequently used to find problematic patterns or code that doesn’t adhere to certain style guidelines.

https://eslint.org/docs/about/

也许您可以编写一个插件来验证这些情况。