Disallow unnecessary regex flags.
configuration in plugin:clean-regex/recommended: "warn"
This will point out present regex flags that do not change the pattern.
The i flag is only necessary if the pattern contains any characters with case
variations. If no such characters are part of the pattern, the flag is
unnecessary. E.g. /\.{3}/i
The m flag changes the meaning of the ^ and $ anchors, so if the pattern
doesn't contain these anchors, it's unnecessary. E.g. /foo|[^\r\n]*/m
The s flag makes the dot (.) match all characters instead of the usually
non-line-terminator characters, so if the pattern doesn't contain a dot
character set, it will be unnecessary. E.g. /[.:]/s
No other flags will be checked.
Examples of valid code for this rule:
/a|b/i
/^foo$/m
/a.*?b/sExamples of invalid code for this rule:
/\w+/i
/a|b/m
/^foo$/s