eslint/no-this-before-super Correctness

✅ This rule is turned on by default.

Requires calling super() before using this or super.

This rule can be disabled for TypeScript code, as the TypeScript compiler enforces this check.

In the constructor of derived classes, if this/super are used before super() calls, it raises a ReferenceError.

Examples of incorrect code for this rule:

javascript

class A1 extends B {
  constructor() {
    // super() needs to be called first
    this.a = 0;
    super();
  }
}

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": {
    "no-this-before-super": "error"
  }
}

import { defineConfig } from "oxlint";

export default defineConfig({
  rules: {
    "no-this-before-super": "error",
  },
});

bash

oxlint --deny no-this-before-super

This rule was added in v0.2.6.