#arrow-spacing

#Configuration

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

export default defineConfig([
  stylisticPlugin.configs.recommended,
  {
    rules: {
      '@stylistic/arrow-spacing': 'error',
    },
  },
]);

Enforce consistent spacing before and after the => in arrow functions.

#Rule Details

This rule normalizes the whitespace around the => token of arrow functions. It also applies to TypeScript function-type and constructor-type annotations (type F = () => void, type C = new () => Foo).

Examples of incorrect code for this rule with the default { "before": true, "after": true } option:

a=>a;
()=>{};
(a)=> {};
a =>a;

Examples of correct code for this rule with the default { "before": true, "after": true } option:

a => a;
() => {};
(a) => {};

#Options

This rule has an object option:

• "before": true (default) requires a space before =>. Set to false to forbid the space.
• "after": true (default) requires a space after =>. Set to false to forbid the space.

Either key may be omitted; a missing key falls back to its default true.

#before

Examples of incorrect code for this rule with the { "before": false } option:

{ "@stylistic/arrow-spacing": ["error", { "before": false }] }

a =>a;
() =>{};
(a) =>{};

Examples of correct code for this rule with the { "before": false } option:

{ "@stylistic/arrow-spacing": ["error", { "before": false }] }

a=> a;
()=> {};
(a)=> {};

#after

Examples of incorrect code for this rule with the { "after": false } option:

{ "@stylistic/arrow-spacing": ["error", { "after": false }] }

a => a;
() => {};
(a) => {};

Examples of correct code for this rule with the { "after": false } option:

{ "@stylistic/arrow-spacing": ["error", { "after": false }] }

a =>a;
() =>{};
(a) =>{};

#Original Documentation

• @stylistic/arrow-spacing