为什么短绒棉会选择无用的逃生字符? [英] Why do linters pick on useless escape character?

问题描述

在字符串，模板文字和正则表达式中转义非特殊字符没有任何作用

Escaping non-special characters in strings, template literals, and regular expressions doesn't have any effect

来源: https://eslint.org/docs/rules/no-useless -转义

但是显然这是错误的:

这里没有什么可以修复"的；我们都知道这是一个完全有效的字符序列.

There's nothing to "fix" here; we all know this is a perfectly valid sequence of characters.

开玩笑的原因是什么?

如果连ESLint都承认没有伤害，那为什么还要打扰呢?如果仅查看最终结果(我知道不会打印出\字符)可能没有用，但是在代码就是数据" 上下文中，这可能是有用的数据在进行语法分析时.

If even ESLint acknowledges that there's no harm then why bother? It may be useless if you only look at the end result (I know that the \ character won't be printed out) but in a "code is data" context, this may be useful data when doing syntax analysis.

ESLint会对字符串中的内容进行判断，但是它不会与以下代码放在一起:(这对我来说也很没用)

ESLint makes a judgment on what goes into the string, yet it won't budge with this code: (and that's pretty useless to me too)

var x = 10;
var y = x + 0;
var z = y * 1;

推荐答案

如果转义字符没有做任何有用的事情，那么它在做什么?

If the escape character isn't doing anything useful, what is it doing there?

也许代码的编写者想要一个文字反斜杠字符.该错误引起了人们的注意，因此他们可以将\替换为\\.

Perhaps the writer of the code wanted a literal backslash character. The error draws attention to it so they can replace \ with \\.

也许他们认为下一个字符需要转义.这样可以教育他们.

Perhaps they thought the next character needed escaping. This educates them otherwise.

也许这只是一个错字.

Perhaps it is just a typo.

由于没有好的原因来存放\，因此只能有坏的原因.有些比其他严重得多，但短绒棉会引起他们的注意.

Since there is no good reason to have the \ there, there can only be bad reasons. Some are more seriously bad than others, but the linter will draw attention to them.

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