coffee2closure

0.1.12 verified Fri May 01 auth: no javascript deprecated

A utility that fixes CoffeeScript-compiled JavaScript output to be compatible with Google Closure Compiler. Version 0.1.12 is the latest stable release as of late 2013, with no active development since then. It addresses issues like missing 'var' declarations and proper function expression wrapping that break Closure Compiler's advanced optimizations. Unlike manual post-processing, it automates these fixes. The package is designed for build pipelines, notably used as a Grunt plugin. Given its age and lack of updates, it should be considered deprecated for modern projects.

Common errors

error Error: Cannot find module 'coffee2closure' ↓

cause Package not installed or import path incorrect.

fix

Run npm install coffee2closure --save-dev and ensure your import uses the correct path.

error TypeError: coffee2closure is not a function ↓

cause Using default import incorrectly or requiring the wrong export.

fix

Use import coffee2closure from 'coffee2closure' or const coffee2closure = require('coffee2closure').

error CoffeeScript syntax error on line X ↓

cause Input contains invalid CoffeeScript.

fix

Fix the CoffeeScript syntax before passing it to coffee2closure.

error Grunt task not found: coffee2closure ↓

cause Grunt plugin not loaded correctly.

fix

Add grunt.loadNpmTasks('coffee2closure') in your Gruntfile.

Warnings

deprecated Package is no longer maintained and has not been updated since 2013. ↓

fix Consider using modern alternatives like decaffeinate or direct transpilation with Babel.

gotcha Input must be CoffeeScript source code, not compiled JavaScript. ↓

fix Ensure you pass .coffee file contents, not .js.

gotcha The output may still require manual adjustments for strict Closure Compiler settings. ↓

fix Review the output and apply additional fixes if needed.

Install

npm install coffee2closure

yarn add coffee2closure

pnpm add coffee2closure

Imports

default
wrong
```
const coffee2closure = require('coffee2closure')
```
correct
```
import coffee2closure from 'coffee2closure'
```
The package provides a single default export as a function. CommonJS require works in Node.
grunt plugin
wrong
```
require('coffee2closure')()
```
correct
```
grunt.loadNpmTasks('coffee2closure')
```
When used with Grunt, load via loadNpmTasks and configure in Gruntfile.
function call
wrong
```
new coffee2closure()
```
correct
```
coffee2closure('input.coffee')
```
coffee2closure is a function, not a constructor. Call it directly.

Quickstart

Shows how to import and use coffee2closure to transform CoffeeScript code for Closure Compiler compatibility.

import coffee2closure from 'coffee2closure'; import fs from 'fs'; const input = fs.readFileSync('input.coffee', 'utf8'); const output = coffee2closure(input); console.log(output);