unicorn/prefer-code-point Pedantic

🛠️ An auto-fix is available for this rule.

Prefer usage of String#codePointAt over String#charCodeAt. Prefer usage of String.fromCodePoint over String.fromCharCode.

Examples of incorrect code for this rule:

javascript

"🦄".charCodeAt(0);
String.fromCharCode(0x1f984);

Examples of correct code for this rule:

javascript

"🦄".codePointAt(0);
String.fromCodePoint(0x1f984);

How to use

To enable this rule using the config file or in the CLI, you can use:

Config (.oxlintrc.json)Config (oxlint.config.ts)CLI

json

{
  "rules": {
    "unicorn/prefer-code-point": "error"
  }
}

import { defineConfig } from "oxlint";

export default defineConfig({
  rules: {
    "unicorn/prefer-code-point": "error",
  },
});

bash

oxlint --deny unicorn/prefer-code-point

This rule was added in v0.0.16.