@typescript-eslint/prefer-regexp-exec

The return value of text.match(pattern) depends on the flags of pattern. With g it's a list of all matches without their groups. Without g it's the first match with its groups, which is what pattern.exec(text) returns. If you use exec for one match and keep match for the g flag, the method name tells you which of the two you get.

A call is only reported if the rule can tell that there's no g flag. A regular expression that comes in as a parameter is left alone.

--fix rewrites the call. A string argument becomes a regular expression, so text.match("v1") becomes /v1/.exec(text).

Configure#

Off by default. This rule needs types, so turning it on makes bun lint type check your code first.

[lint.rules]
"@typescript-eslint/prefer-regexp-exec" = "error" # or "warn"

Examples#

function version(text: string) {
  return text.match(/v(\d+)/) ?? text.match("latest");
}

function version(text: string) {
  return /v(\d+)/.exec(text) ?? /latest/.exec(text);
}

function numbers(text: string) {
  return text.match(/\d+/g);
}

function search(text: string, pattern: RegExp) {
  return text.match(pattern);
}