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Enhancement: [prefer-regexp-exec] option or rule for preferring string.match over regexp.exec #11434

@AmeroHan

Description

@AmeroHan

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  • I believe my proposal would be useful to the broader TypeScript community (meaning it is not a niche proposal).

Link to the rule's documentation

https://typescript-eslint.io/rules/prefer-regexp-exec

Description

As the description of prefer-regexp-exec goes, "keeping to consistently using one of the two can help improve code readability".

function getBearer(headers: Headers): string | undefined {
  return headers.get('Authorization')?.match(/^Bearer (.+)$/)?.[1]
}

// somewhere else
console.log(/thing/.exec('something'))

We cannot turn both of them into regexp.exec(string) as there is an optional chain. However, they can be turned into string.match(regexp). It is more often for strings compared to RegExps to be optional.

While RegExp#exec might be ssssslightly faster than String#match, it doesn't matter for most projects.

Fail

/thing/.exec('something')

Pass

'something'.match(/thing/)

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    enhancement: plugin rule optionNew rule option for an existing eslint-plugin rulepackage: eslint-pluginIssues related to @typescript-eslint/eslint-plugintriageWaiting for team members to take a look

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