No Useless Default

SuggestionAuto-fixableRoblox

small-rules/no-useless-default

Disallow Roblox JSX properties whose values already match the class defaults.

Rationale

Default parameters that just assign the value the type already defaults to (like undefined for an optional field) are just noise. They don’t change how the function behaves. They just make the signature longer.

If the default doesn’t provide a real fallback, take it out of the signature.

Diagnostic Messages

uselessDefault

Remove "{{propertyName}}" from {{className}}. It already matches the default value.

Configuration

This rule does not accept options.

.oxlintrc.json

{
  "jsPlugins": [
    "@pobammer-ts/small-rules"
  ],
  "rules": {
    "small-rules/no-useless-default": "error"
  }
}

oxlint.config.ts

import { defineConfig } from "oxlint";

export default defineConfig({
  jsPlugins: ["@pobammer-ts/small-rules"],
  rules: {
    "small-rules/no-useless-default": "error",
  },
});

Examples

default UI property assignment

const view = <uiaspectratioconstraint AspectRatio={1} />;

After auto-fix

const view = <uiaspectratioconstraint />;

non-default aspect ratio attribute

const view = <uiaspectratioconstraint key="my-key" />;