What version of Oxlint are you using?

1.59.0

What command did you run?

No response

What does your .oxlintrc.json (or oxlint.config.ts) config file look like?

{
  "$schema": "./node_modules/oxlint/configuration_schema.json",
  "plugins": [
    "unicorn"
  ],
  "env": {
    "builtin": true
  },
  "options": {
    "reportUnusedDisableDirectives": "off",
    "typeAware": false,
    "typeCheck": false
  },
  "categories": {
    "correctness": "off",
    "nursery": "off",
    "pedantic": "off",
    "perf": "off",
    "restriction": "off",
    "style": "off",
    "suspicious": "off"
  },
  "rules": {
    "unicorn/prefer-string-replace-all": "error"
  }
}

What happened?

Given the code below:

someVar.replaceAll(/foo/gi, 'bar')

oxlint reports an error saying the regex should be replaced with a plain string 'foo' but that would result in different runtime behaviour as the replace would no longer be case-insensitive.

This works correctly in the original/JavaScript version of the unicorn/prefer-string-replace-all rule. Looking at the code the issues seems to be the difference between the following lines, the JavaScript version will only suggest replacing with a string if the only regex flags are g, u or v whereas the rust implementation in oxlint only checks if the g flag is set:

https://github.com/sindresorhus/eslint-plugin-unicorn/blob/add2138bd8852592d3f75bb55cf0c1de8a63633a/rules/prefer-string-replace-all.js#L21