#no-self-assign

#Configuration

import { defineConfig, js } from '@rslint/core';

export default defineConfig([
  js.configs.recommended,
  {
    rules: {
      'no-self-assign': 'error',
    },
  },
]);

#Rule Details

Disallow assignments where both sides are exactly the same. Self-assignments have no effect, so they are probably errors due to incomplete refactoring.

Examples of incorrect code for this rule:

a = a;
[a, b] = [a, b];
[a, ...b] = [a, ...b];
({ a } = { a });
({ a: b } = { a: b });
a.b = a.b;
a.b.c = a.b.c;
a[0] = a[0];
a.b = a['b'];
a &&= a;
a ||= a;
a ??= a;

Examples of correct code for this rule:

a = b;
[a, b] = [b, a];
a.b = a.c;
a.b = c.b;
a += a;
a = +a;
a.b = a?.b; // considered self-assignment

#Options

This rule has an object option:

• props (boolean, default: true): When true, checks member expression (property access and element access) self-assignments such as a.b = a.b and a[0] = a[0]. Set to false to disable property checks.

Examples of correct code with { "props": false }:

a.b = a.b;
a[0] = a[0];
this.x = this.x;

#Original Documentation

https://eslint.org/docs/latest/rules/no-self-assign