--- description: 'Enforce `RegExp#exec` over `String#match` if no global flag is provided.' --- import Tabs from '@theme/Tabs'; import TabItem from '@theme/TabItem'; > 🛑 This file is source code, not the primary documentation location! 🛑 > > See **https://typescript-eslint.io/rules/prefer-regexp-exec** for documentation. `String#match` is defined to work the same as `RegExp#exec` when the regular expression does not include the `g` flag. Keeping to consistently using one of the two can help improve code readability. This rule reports when a `String#match` call can be replaced with an equivalent `RegExp#exec`. > `RegExp#exec` may also be slightly faster than `String#match`; this is the reason to choose it as the preferred usage. ## Examples ```ts 'something'.match(/thing/); 'some things are just things'.match(/thing/); const text = 'something'; const search = /thing/; text.match(search); ``` ```ts /thing/.exec('something'); 'some things are just things'.match(/thing/g); const text = 'something'; const search = /thing/; search.exec(text); ``` ## When Not To Use It If you prefer consistent use of `String#match` for both with `g` flag and without it, you can turn this rule off.