我有一個正則表達式,其中包含 ESLint 似乎不認為有效的后向斷言。然而,前瞻斷言是可以的。我可以使用最新版本的 ESLint(我使用過在線演示)以及非常簡單且人為的示例來重現此問題。前瞻斷言:匹配b(且僅b)如果后跟d:'bd'.match(/b(?=d)/) //=> ['b']
'be'.match(/b(?=d)/) //=> nullESLint 識別/b(?=d)/為有效的正則表達式:Lookbehind 斷言:匹配b(且僅b)如果前面是a:'ab'.match(/(?<=a)b/) //=> ['b']
'eb'.match(/(?<=a)b/) //=> nullESLint 無法識別/(?<=a)b/為有效的正則表達式:問題:我的正則表達式有什么問題導致 ESLint 抱怨?上面演示中使用的 ESLint 配置:{ "parserOptions": { "ecmaVersion": 5, "sourceType": "script", "ecmaFeatures": {} }, "rules": { "constructor-super": 2, "for-direction": 2, "getter-return": 2, "no-async-promise-executor": 2, "no-case-declarations": 2, "no-class-assign": 2, "no-compare-neg-zero": 2, "no-cond-assign": 2, "no-const-assign": 2, "no-constant-condition": 2, "no-control-regex": 2, "no-debugger": 2, "no-delete-var": 2, "no-dupe-args": 2, "no-dupe-class-members": 2, "no-dupe-else-if": 2, "no-dupe-keys": 2, "no-duplicate-case": 2, "no-empty": 2, "no-empty-character-class": 2, "no-empty-pattern": 2, "no-ex-assign": 2, "no-extra-boolean-cast": 2, "no-extra-semi": 2, "no-fallthrough": 2, "no-func-assign": 2, "no-global-assign": 2, "no-import-assign": 2, "no-inner-declarations": 2, "no-invalid-regexp": 2, "no-irregular-whitespace": 2, "no-misleading-character-class": 2, "no-mixed-spaces-and-tabs": 2, "no-new-symbol": 2, "no-obj-calls": 2, "no-octal": 2, "no-prototype-builtins": 2, "no-redeclare": 2, "no-regex-spaces": 2, "no-self-assign": 2, "no-setter-return": 2, "no-shadow-restricted-names": 2, "no-sparse-arrays": 2, "no-this-before-super": 2, "no-undef": 2, }, "env": {}}javascript正則表達式埃斯林特
ESLint 和lookbehind 斷言
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2023-07-20 10:52:26