Gradle Javascript Plugin!

Aiming to be the simplest way to manage your JavaScript in a build.

Quick Start

Wrangling your JS in a Gradle build is easy! Just add this to your build.gradle file:

// Pull the plugin from Maven Central
buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.eriwen:gradle-js-plugin:1.8.0'
    }
}
// Invoke the plugin
apply plugin: 'js'

// Declare your sources
javascript.source {
    dev {
        js {
            srcDir jsSrcDir
            include "*.js"
            exclude "*.min.js"
        }
    }
    prod {
        js {
            srcDir jsSrcDir
            include "*.min.js"
        }
    }
}

Combining Files (options)

// Configure the built-in task
combineJs {
    source = javascript.source.dev.js.files
    dest = file("${buildDir}/all.js")
}

// Create new CombineJsTasks if you have multiple sets of JS files
task jsDev(type: com.eriwen.gradle.js.tasks.CombineJsTask) {
    source = ["${projectDir}/js/file1.js", "${projectDir}/js/file2.js"]
    dest = file("${buildDir}/all-debug.js")
}

task jsProd(type: com.eriwen.gradle.js.tasks.CombineJsTask) {
    source = ["${projectDir}/js/file1.js", "${projectDir}/js/file2.js"]
    dest = file("${buildDir}/all.js")
}

Minifying files with Google Closure Compiler (options)

minifyJs {
    source = combineJs
    dest = file("${buildDir}/all-min.js")
    closure {
        warningLevel = 'QUIET'
    }
}

GZip JS (options)

gzipJs {
    source = minifyjs
    dest = file("${buildDir}/all-min.js")
}

JSHint support (options)

jshint {
    source = javascript.source.dev.js.files
    dest = file("${buildDir}/jshint.out")
    reporter = 'checkstyle'
    jshint.options = [expr: "true", unused: "true"]
}

JSDoc 3 support (options)

jsdoc {
    source = ["${projectDir}/js/file1.js", "${projectDir}/js/file2.js"]
    destinationDir = file("${buildDir}/jsdoc")
}

props2js support (options)

props2js {
    source = file("${projectDir}/src/test/resources/test.properties")
    dest = file("${buildDir}/props.jsonp")
    props {
        type = 'jsonp'
        functionName = 'fn'
    }
}

require.js via r.js (options)

requireJs {
    source = javascript.source.dev.js.files
    dest = "${buildDir}/out.js"
    requirejs.buildprofile = new File("src/main/resources/requirejs-config.js")
}

Built-in Tasks and Options

combineJs

• source = Collection of file paths of files to merge
• dest = File for combined output

minifyJs (Uses the Google Closure Compiler)

• source = File to minify
• dest = File for minified output
• (Optional) closure.compilationLevel = 'WHITESPACE_ONLY', 'SIMPLE_OPTIMIZATIONS' (default), or 'ADVANCED_OPTIMIZATIONS' (are you hardcore?)
• (Optional) closure.warningLevel = 'QUIET', 'DEFAULT' (default), or 'VERBOSE'
• (Optional) closure.compilerOptions = CompilerOptions object
• (Optional) closure.externs = FileCollection object

gzipJs

• source = File to compress
• dest = File for compressed output

jshint

• source = Files to assess with JSHint
• dest = File for JSHint output
• (Optional) reporter = Only 'checkstyle' supported right now. Defaults to plain JSHint output.
• (Optional) ignoreExitCode = Fail build if false and jshint finds problems. Default is true.
• (Optional) outputToStdOut = true will output to STDOUT instead of file. Default is false.
• (Optional) jshint.options = Map of options (e.g. [expr: "true", unused: "true"])
• (Optional) jshint.predef = Map of predefined globals so JSHint doesn't complain about them

jsdoc

• source = Files to generate documentation for
• destinationDir = Directory path to put JSDoc output
• (Optional) options.options = []

JSDoc 3 options:
-t or --template <value> The name of the template to use. Default: the "default" template
-c or --configure <value> The path to the configuration file. Default: jsdoc __dirname + /conf.json
-e or --encoding <value> Assume this encoding when reading all source files. Default: utf-8
-T or --test Run all tests and quit.
-d or --destination <value> The path to the output folder. Use "console" to dump data to the console. Default: console
-p or --private Display symbols marked with the @private tag. Default: false.
-r or --recurse Recurse into subdirectories when scanning for source code files.
-h or --help Print this message and quit.
-X or --explain Dump all found doclet internals to console and quit.
-q or --query <value> Provide a querystring to define custom variable names/values to add to the options hash.
-u or --tutorials <value> Directory in which JSDoc should search for tutorials.

props2js

• source = Properties file to process
• dest = Destination file for output
• props.type = One of: 'js', 'json', or 'jsonp'
• (Optional) props.functionName = Function name to wrap JSONP

requireJs

• source = Source JS files
• dest = Output JS file
• (Must declare this or requirejs.options) requirejs.buildprofile = File reference for config example
• requirejs.options = Map of options require.js docs
• (Optional) ignoreExitCode = Fail build if false and require.js did not run successfully. Default is false.

What, you want more? Tell me!

Contributors

This project is made possible due to the efforts of these fine people:

• Eric Wendelin - Original author and maintainer
• Luke Daley - Advice and improved project structure and testing
• Josh Newman - AMD and CommonJS work
• Martin Ziel - Allowing minifyJs task to accept multiple files as input
• Joe Fitzgerald - JSHint and RequireJS features
• levsa - JSHint predef and checkstyle reporter

See Also

The Gradle CSS Plugin!