Skip to content
Branch: master
Find file Copy path
3 contributors

Users who have contributed to this file

@benmosher @ljharb @josh
53 lines (36 sloc) 1.36 KB


Forbids the use of mutable exports with var or let.

Rule Details


export const count = 1
export function getCount() {}
export class Counter {}

...whereas here exports will be reported:

export let count = 2
export var count = 3

let count = 4
export { count } // reported here


Note that exported function/class declaration identifiers may be reassigned, but are not flagged by this rule at this time. They may be in the future, if a reassignment is detected, i.e.

// possible future behavior!
export class Counter {} // reported here: exported class is reassigned on line [x].
Counter = KitchenSink // not reported here unless you enable no-class-assign

// this pre-declaration reassignment is valid on account of function hoisting
getCount = function getDuke() {} // not reported here without no-func-assign
export function getCount() {} // reported here: exported function is reassigned on line [x].

To prevent general reassignment of these identifiers, exported or not, you may want to enable the following core ESLint rules:

When Not To Use It

If your environment correctly implements mutable export bindings.

You can’t perform that action at this time.
You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session.