#no-import-assign

#Configuration

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

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

#Rule Details

Disallows assigning to imported bindings. Imports are read-only references to values exported from other modules. Assigning to an import binding is always a mistake, as it will either throw a runtime error or silently fail.

For namespace imports (import * as ns), writing to any member of the namespace object is also disallowed, since namespace objects are frozen.

Examples of incorrect code for this rule:

import mod from 'mod';
mod = 0;

import { named } from 'mod';
named = 0;
named++;

import * as ns from 'mod';
ns = 0;
ns.prop = 0;
ns.prop++;

Examples of correct code for this rule:

import mod from 'mod';
mod.prop = 0; // Writing to a property of a default import is fine

import { named } from 'mod';
named.prop = 0; // Writing to a property of a named import is fine

import * as ns from 'mod';
ns.named.prop = 0; // Writing to nested properties is fine

#Original Documentation

• ESLint no-import-assign