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eslint/no-proto Restriction

🚧 An auto-fix is planned for this rule, but not implemented at this time.

What it does

Disallow the use of the __proto__ property.

Why is this bad?

The __proto__ property has been deprecated as of ECMAScript 3.1 and shouldn’t be used in new code. Use Object.getPrototypeOf and Object.setPrototypeOf instead.

For more information, see the MDN documentation.

Examples

Examples of incorrect code for this rule:

var a = obj.__proto__;

var a = obj["__proto__"];

obj.__proto__ = b;

obj["__proto__"] = b;

How to use

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

Config (.oxlintrc.json)

{
  "rules": {
    "no-proto": "error"
  }
}

Config (oxlint.config.ts)

import { defineConfig } from "oxlint";

export default defineConfig({
  rules: {
    "no-proto": "error",
  },
});

CLI

oxlint --deny no-proto

Version

This rule was added in v0.2.14.

References

• Rule Source
• Upstream rule docs
• Open rule in Oxc Playground