Registry / devops / google-closure-compiler-java

google-closure-compiler-java

library20260428.0.0jsnpmunverified

Java platform distribution of Google's Closure Compiler, a JavaScript optimizer and minifier that produces highly efficient code. This package wraps the Closure Compiler Java library for use in Node.js environments. Current stable version is 20260428.0.0, released weekly alongside upstream Closure Compiler versions. Key differentiators: full Closure Compiler functionality (type checking, optimization, dead code elimination) via Java runtime; suitable for build pipelines; no GraalVM native-image dependency unlike the native platform packages. Compares to other minifiers (Terser, UglifyJS) by offering advanced compilation passes, strict type checking, and cross-module optimization.

devops serialization

npm install google-closure-compiler-java

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · GOOGLE-CLOSURE-COM

google-closure-compiler-java

devopsjavascriptv20260428.0.0

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

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

default

✓ import compiler from 'google-closure-compiler-java'

✗ const compiler = require('google-closure-compiler-java')

ESM default export; in CJS use default property: const compiler = require(...).default

compile

✓ import { compile } from 'google-closure-compiler-java'

✗ import { Compiler } from 'google-closure-compiler-java'

Exported function compile, not a class named Compiler

getNativeImagePath

✓ import { getNativeImagePath } from 'google-closure-compiler-java'

Returns platform-specific Java path; not for native images in this package

Demonstrates basic usage: compile a simple JavaScript string with advanced optimizations, handling errors.

import { compile } from 'google-closure-compiler-java'; const { code, warnings, errors } = compile({ jsCode: [{ src: 'function hello(name) { return "Hello, " + name; }' }], compilationLevel: 'ADVANCED', languageIn: 'ECMASCRIPT_2021', languageOut: 'ECMASCRIPT5' }); if (errors.length) { console.error('Errors:', errors); } else { console.log('Compiled JS:', code); }

closure-compiler --version

Debug

Known issues

breakingRequires Java 8 or later runtime installed; no bundled JRE.

fix

Install Java Runtime Environment (JRE) 8+ and ensure java is on PATH.

affects: >=0.0.0

gotchaThe package does not include a Java binary; it only provides Node.js wrapper to invoke system Java. Misunderstanding expects bundled Java.

fix

Use google-closure-compiler which includes platform-specific native images if Java not desired.

affects: >=0.0.0

deprecatedThe 'compile' function's 'jsOutputFile' property removed in v20221104 to discourage file system side effects.

fix

Use in-memory compilation and write output manually if needed.

affects: >=20221104.0.0

gotchacompilationLevel must be a string matching Closure Compiler API; wrong case or misspelling fails silently.

fix

Use exact values: 'WHITESPACE_ONLY', 'SIMPLE', 'ADVANCED'.

affects: >=0.0.0

gotchaError handling: compile returns warnings and errors in result object; does not throw on compilation failure.

fix

Always check result.errors array length before using result.code.

affects: >=0.0.0

Errors

Common errors & fixes

Error: java not found. Please install Java and add it to your PATH.

Java runtime is not installed or not accessible on system PATH.

fix

Install Java 8+ (e.g., from adoptopenjdk.net) and ensure 'java -version' works in terminal.

Error: Cannot find module 'google-closure-compiler-java'

Package not installed or import path wrong.

fix

Run 'npm install google-closure-compiler-java' and use correct import: import compiler from 'google-closure-compiler-java'.

TypeError: compiler is not a function

Using default import but expecting compile function; default is the module namespace.

fix

Use import { compile } from 'google-closure-compiler-java' or import compiler from ... then compiler.compile().

Upgrade

Version history

20260428.0.0latest on npm

Audit

Dependencies

google-closure-compileroptionalMeta-package that includes platform-specific binaries; java package is a subset

Agent activity

5 hits · last 30 days

node

Amazon

Resources

githubhttps://github.com/ChadKillingsworth/closure-compiler-npm ↗

packagehttps://www.npmjs.com/package/google-closure-compiler-java ↗

homepagehttps://developers.google.com/closure/compiler/ ↗