build.js

'use strict';

const compiler = require('./js13k-compiler/src/compiler');

const JS_FILES = require('./config/js');
const CONSTANTS = require('./config/constants');
const MANGLE_SETTINGS = require('./config/mangle');

function copy(obj){
    return JSON.parse(JSON.stringify(obj));
}

compiler.run((tasks) => {
    function buildJS(mangle, uglify){
        // Manually injecting the DEBUG constant
        const constants = copy(CONSTANTS);
        constants.DEBUG = !uglify;

        const sequence = [
            tasks.label('Building JS'),
            tasks.loadFiles(JS_FILES),
            tasks.concat(),
            tasks.constants(constants),
            tasks.macro('evaluate'),
            tasks.macro('nomangle')
        ];

        if(mangle){
            sequence.push(tasks.mangle(MANGLE_SETTINGS));
        }

        if(uglify){
            sequence.push(tasks.uglifyES());
        }

        return tasks.sequence(sequence);
    }

    function buildCSS(uglify){
        const sequence = [
            tasks.label('Building CSS'),
            tasks.loadFiles([__dirname + "/src/style.css"]),
            tasks.concat()
        ];

        if(uglify){
            sequence.push(tasks.uglifyCSS());
        }

        return tasks.sequence(sequence);
    }

    function buildHTML(uglify){
        const sequence = [
            tasks.label('Building HTML'),
            tasks.loadFiles([__dirname + "/src/index.html"]),
            tasks.concat()
        ];

        if(uglify){
            sequence.push(tasks.uglifyHTML());
        }

        return tasks.sequence(sequence);
    }

    function buildMain(){
        return tasks.sequence([
            tasks.block('Building main files'),
            tasks.parallel({
                'js': buildJS(true, true),
                'css': buildCSS(true),
                'html': buildHTML(true)
            }),
            tasks.combine(),
            tasks.output(__dirname + '/build/index.html'),
            tasks.label('Building ZIP'),
            tasks.zip('index.html'),
            tasks.output(__dirname + '/build/game.zip'),
            tasks.checkSize(__dirname + '/build/game.zip'),
            tasks.advzip(__dirname + '/build/game.zip'),
            tasks.checkSize(__dirname + '/build/game.zip'),
        ]);
    }

    function buildDebug(mangle, suffix){
        return tasks.sequence([
            tasks.block('Building debug files'),
            tasks.parallel({
                // Debug JS in a separate file
                'debug_js': tasks.sequence([
                    buildJS(mangle, false),
                    tasks.output(__dirname + '/build/debug' + suffix + '.js')
                ]),

                // Injecting the debug file
                'js': tasks.inject(['debug' + suffix + '.js']),

                'css': buildCSS(false),
                'html': buildHTML(false)
            }),
            tasks.combine(),
            tasks.output(__dirname + '/build/debug' + suffix + '.html')
        ]);
    }

    function main(){
        return tasks.sequence([
            buildMain(),
            buildDebug(false, ''),
            buildDebug(true, '_mangled')
        ]);
    }

    return main();
});