Registry / devops / prettier-plugin-space-before-function-paren

prettier-plugin-space-before-function-paren

library0.1.0jsnpmunverified

A Prettier plugin that adds a space before function parentheses for function definitions (not function calls) in JavaScript and TypeScript. Current stable version 0.1.0, released as a proof of concept. Release cadence: irregular, early stage. Differentiator: unlike Prettier's deprecated space-before-function-paren option, this plugin works with Prettier 3.0.0+ and only targets definitions, not calls. Requires Prettier >=3.0.0 as a peer dependency.

devops

npm install prettier-plugin-space-before-function-paren

github ↗package ↗

INSTALL

IMPORT

SIG · PRETTIER-PLUGIN-SP

prettier-plugin-space-before-function-paren

devopsjavascriptv0.1.0

Install

—

Import

—

Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

space-before-function-paren (plugin)

✓ // In prettier config "plugins": ["prettier-plugin-space-before-function-paren"]

✗ "plugins": ["prettier-plugin-space-before-function-paren"] // Omitting from plugins array: plugin won't apply

Plugin is added via Prettier config's plugins array, not imported in code.

Plugin as ES module (for programmatic use)

✓ import plugin from 'prettier-plugin-space-before-function-paren'; await prettier.format(code, { plugins: [plugin], parser: 'babel' });

✗ const plugin = require('prettier-plugin-space-before-function-paren');

Plugin is ESM-only as of v0.1.0 due to Prettier 3's ESM support. require() may fail in CommonJS contexts.

Type import (TypeScript)

✓ import type { Plugin } from 'prettier'; const plugin: Plugin = require('prettier-plugin-space-before-function-paren');

✗ import plugin from 'prettier-plugin-space-before-function-paren'; // TypeScript may not resolve types

Plugin does not ship TypeScript types; use Prettier's Plugin type if needed.

Shows installation, config, and formatting: adds space before function paren in definitions only.

// 1. Install // npm install -D prettier prettier-plugin-space-before-function-paren // 2. Configure .prettierrc { "plugins": ["prettier-plugin-space-before-function-paren"] } // 3. Input file (input.js) function foo() {} // 4. Format with Prettier // npx prettier --write input.js // 5. Output (input.js) function foo () {}

Debug

Known issues

breakingPlugin requires Prettier 3.0.0 or later. Older versions will fail to load the plugin.

fix

Upgrade Prettier to >=3.0.0

affects: <0.1.0

gotchaPlugin is a proof of concept; may not cover all edge cases (e.g., async functions, generators, TypeScript).

fix

Test thoroughly with your codebase. Report issues on GitHub.

affects: 0.1.0

gotchaPlugin does not affect function calls, only function definitions. Misconfiguration may lead to inconsistent formatting if expectations differ.

fix

Use Prettier's space-before-function-paren option (deprecated) for function calls if needed, but note incompatibility.

affects: 0.1.0

gotchaWhen used alongside other JS/TS Prettier plugins, they may conflict. Use prettier-plugin-merge to preserve changes.

fix

Install prettier-plugin-merge and add it to the end of your plugins array.

affects: 0.1.0

deprecatedPrettier's built-in space-before-function-paren option is deprecated in Prettier 3. This plugin is a replacement specifically for function definitions.

fix

Use this plugin or remove the deprecated option entirely.

affects: >=3.0.0

Errors

Common errors & fixes

Error: Cannot find module 'prettier-plugin-space-before-function-paren'

Plugin not installed or not in node_modules.

fix

Run 'npm install -D prettier prettier-plugin-space-before-function-paren'

error: Couldn't resolve plugin "prettier-plugin-space-before-function-paren". The plugin is probably not installed or is incompatible with Prettier version.

Prettier version <3.0.0 or plugin not in config correctly.

fix

Update Prettier to >=3.0.0 and ensure plugin is in plugins array.

TypeError: prettier.resolveConfig is not a function or its return value is not iterable

CommonJS require of plugin in Prettier 3 ESM context.

fix

Use ES module syntax (import) or ensure Prettier is running in ESM mode.

Upgrade

Version history

0.1.0latest on npm

Audit

Dependencies

prettierrequiredPeer dependency: requires Prettier 3.0.0 or later to function as a plugin.

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/DmitrySharabin/prettier-plugin-space-before-function-paren ↗

packagehttps://www.npmjs.com/package/prettier-plugin-space-before-function-paren ↗