#no-func-assign

#Configuration

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

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

#Rule Details

Disallows reassigning variables that were declared as function declarations. Reassigning a function declaration is almost always a mistake, as it overwrites the function with a different value. This rule checks for assignments, increment/decrement operations, and destructuring assignments that target a function name.

Examples of incorrect code for this rule:

function foo() {}
foo = bar;

function foo() {}
foo += 1;

function foo() {}
[foo] = arr;

Examples of correct code for this rule:

function foo() {}
foo();

var foo = function () {};
foo = bar; // foo is a variable, not a function declaration

function foo(foo) {
  foo = bar; // foo is a parameter, not the function
}

function foo() {
  var foo = bar; // foo is a local variable, not the function
}

#Original Documentation

• ESLint no-func-assign