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import { execSync } from 'child_process';
import fs from 'fs';
import path from 'path';
// 1st party Rollup plugins
import { createFilter } from '@rollup/pluginutils';
import { babel } from '@rollup/plugin-babel';
import resolve from '@rollup/plugin-node-resolve';
import strip from '@rollup/plugin-strip';
import terser from '@rollup/plugin-terser';
// 3rd party Rollup plugins
import dts from 'rollup-plugin-dts';
import jscc from 'rollup-plugin-jscc';
import { visualizer } from 'rollup-plugin-visualizer';
/** @typedef {import('rollup').RollupOptions} RollupOptions */
/** @typedef {import('rollup').Plugin} Plugin */
/** @typedef {import('rollup').OutputOptions} OutputOptions */
/** @typedef {import('@rollup/plugin-babel').RollupBabelInputPluginOptions} RollupBabelInputPluginOptions */
/** @typedef {import('@rollup/plugin-strip').RollupStripOptions} RollupStripOptions */
/**
* @returns {string} Version string like `1.58.0-dev`
*/
function getVersion() {
const text = fs.readFileSync('./package.json', 'utf8');
const json = JSON.parse(text);
return json.version;
}
/**
* @returns {string} Revision string like `644d08d39` (9 digits/chars).
*/
function getRevision() {
let revision;
try {
revision = execSync('git rev-parse --short HEAD').toString().trim();
} catch (e) {
revision = 'unknown';
}
return revision;
}
const version = getVersion();
const revision = getRevision();
console.log(`Building PlayCanvas Engine v${version} revision ${revision}`);
/**
* Build the banner with build date and revision. Revision only works for git repo, not zip.
*
* @param {string} config - A string like `(DEBUG PROFILER)` or even an empty string.
* @returns {string} - The banner.
*/
function getBanner(config) {
return [
'/**',
' * @license',
' * PlayCanvas Engine v' + version + ' revision ' + revision + config,
' * Copyright 2011-' + new Date().getFullYear() + ' PlayCanvas Ltd. All rights reserved.',
' */'
].join('\n');
}
/**
* This plugin converts every two spaces into one tab. Two spaces is the default the babel plugin
* outputs, which is independent of the four spaces of the code base.
*
* @param {boolean} enable - Enable or disable the plugin.
* @returns {Plugin} The plugin.
*/
function spacesToTabs(enable) {
const filter = createFilter([
'**/*.js'
], []);
return {
name: "spacesToTabs",
transform(code, id) {
if (!enable || !filter(id)) return undefined;
// ^ = start of line
// " +" = one or more spaces
// gm = find all + multiline
const regex = /^ +/gm;
code = code.replace(
regex,
startSpaces => startSpaces.replace(/ {2}/g, '\t')
);
return {
code,
map: null
};
}
};
}
/**
* Validate and print warning if an engine module on a lower level imports module on a higher level
*
* @param {string} rootFile - The root file, typically `src/index.js`.
* @param {boolean} enable - Enable or disable the plugin.
* @returns {Plugin} The plugin.
*/
function engineLayerImportValidation(rootFile, enable) {
const folderLevels = {
'core': 0,
'platform': 1,
'scene': 2,
'framework': 3
};
let rootPath;
return {
name: 'engineLayerImportValidation',
buildStart() {
rootPath = path.parse(path.resolve(rootFile)).dir;
},
resolveId(imported, importer) {
if (enable) {
// skip non-relative paths, those are not our imports, for example 'rollupPluginBabelHelpers.js'
if (importer && imported && imported.includes('./')) {
// convert importer path
const importerDir = path.parse(importer).dir;
const relImporter = path.dirname(path.relative(rootPath, importer));
const folderImporter = relImporter.split(path.sep)[0];
const levelImporter = folderLevels[folderImporter];
// convert imported path
const absImported = path.resolve(path.join(importerDir, imported));
const relImported = path.dirname(path.relative(rootPath, absImported));
const folderImported = relImported.split(path.sep)[0];
const levelImported = folderLevels[folderImported];
if (levelImporter < levelImported) {
console.log(`(!) Incorrect import: [${path.relative(rootPath, importer)}] -> [${imported}]`);
}
}
}
// we don't process imports, return null to allow chaining
return null;
}
};
}
/**
* @param {boolean} enable - Enable or disable the plugin.
* @returns {Plugin} The plugin.
*/
function shaderChunks(enable) {
const filter = createFilter([
'**/*.vert.js',
'**/*.frag.js'
], []);
return {
name: 'shaderChunks',
transform(code, id) {
if (!enable || !filter(id)) return undefined;
code = code.replace(/\/\* glsl \*\/\`((.|\r|\n)*)\`/, (match, glsl) => {
// Remove carriage returns
glsl = glsl.replace(/\r/g, '');
// 4 spaces to tabs
glsl = glsl.replace(/ {4}/g, '\t');
// Remove comments
glsl = glsl.replace(/\/\*[\s\S]*?\*\/|\/\/.*/g, '');
// Trim all whitespace from line endings
glsl = glsl.split('\n').map(line => line.trimEnd()).join('\n');
// Restore final new line
glsl += '\n';
// Comment removal can leave an empty line so condense 2 or more to 1
glsl = glsl.replace(/\n{2,}/g, '\n');
// Remove new line character at the start of the string
if (glsl.length > 1 && glsl[0] === '\n') {
glsl = glsl.substr(1);
}
return JSON.stringify(glsl);
});
return {
code: code,
map: null
};
}
};
}
/**
* The ES5 options for babel(...) plugin.
*
* @param {string} buildType - Only 'debug' requires special handling so far.
* @returns {RollupBabelInputPluginOptions} The babel options.
*/
const es5Options = buildType => ({
babelHelpers: 'bundled',
babelrc: false,
comments: buildType === 'debug',
compact: false,
minified: false,
presets: [
[
'@babel/preset-env', {
loose: true,
modules: false,
targets: {
ie: '11'
}
}
]
]
});
/**
* The ES6 options for babel(...) plugin.
*
* @param {string} buildType - Only 'debug' requires special handling so far.
* @returns {RollupBabelInputPluginOptions} The babel options.
*/
const moduleOptions = buildType => ({
babelHelpers: 'bundled',
babelrc: false,
comments: buildType === 'debug',
compact: false,
minified: false,
presets: [
[
'@babel/preset-env', {
bugfixes: true,
loose: true,
modules: false,
targets: {
esmodules: true
}
}
]
]
});
const stripFunctions = [
'Debug.assert',
'Debug.assertDeprecated',
'Debug.assertDestroyed',
'Debug.call',
'Debug.deprecated',
'Debug.warn',
'Debug.warnOnce',
'Debug.error',
'Debug.errorOnce',
'Debug.log',
'Debug.logOnce',
'Debug.trace',
'DebugHelper.setName',
'DebugHelper.setLabel',
`DebugHelper.setDestroyed`,
'DebugGraphics.toString',
'DebugGraphics.clearGpuMarkers',
'DebugGraphics.pushGpuMarker',
'DebugGraphics.popGpuMarker',
'WebgpuDebug.validate',
'WebgpuDebug.memory',
'WebgpuDebug.internal',
'WebgpuDebug.end',
'WorldClustersDebug.render'
];
/**
* Build a target that rollup is supposed to build.
*
* @param {'debug'|'release'|'profiler'|'min'} buildType - The build type.
* @param {'es5'|'es6'} moduleFormat - The module format.
* @returns {RollupOptions} One rollup target.
*/
function buildTarget(buildType, moduleFormat) {
const banner = {
debug: ' (DEBUG PROFILER)',
release: '',
profiler: ' (PROFILER)',
min: null
};
const outputPlugins = {
release: [],
min: [
terser()
]
};
if (process.env.treemap) {
outputPlugins.min.push(visualizer({
filename: 'treemap.html',
brotliSize: true,
gzipSize: true
}));
}
if (process.env.treenet) {
outputPlugins.min.push(visualizer({
filename: 'treenet.html',
template: 'network'
}));
}
if (process.env.treesun) {
outputPlugins.min.push(visualizer({
filename: 'treesun.html',
template: 'sunburst'
}));
}
const outputFile = {
debug: 'build/playcanvas.dbg',
release: 'build/playcanvas',
profiler: 'build/playcanvas.prf',
min: 'build/playcanvas.min'
};
const outputExtension = {
es5: '.js',
es6: '.mjs'
};
/** @type {Record<string, 'umd'|'es'>} */
const outputFormat = {
es5: 'umd',
es6: 'es'
};
const sourceMap = {
debug: 'inline',
release: null
};
/** @type {OutputOptions} */
const outputOptions = {
banner: banner[buildType] && getBanner(banner[buildType] || banner.release),
plugins: outputPlugins[buildType || outputPlugins.release],
format: outputFormat[moduleFormat],
indent: '\t',
sourcemap: sourceMap[buildType] || sourceMap.release,
name: 'pc',
preserveModules: moduleFormat === 'es6'
};
outputOptions[moduleFormat === 'es6' ? 'dir' : 'file'] = `${outputFile[buildType]}${outputExtension[moduleFormat]}`;
const sdkVersion = {
_CURRENT_SDK_VERSION: version,
_CURRENT_SDK_REVISION: revision
};
const jsccOptions = {
debug: {
values: {
...sdkVersion,
_DEBUG: 1,
_PROFILER: 1
},
keepLines: true
},
release: {
values: sdkVersion
},
profiler: {
values: {
...sdkVersion,
_PROFILER: 1
}
}
};
/**
* @type {RollupStripOptions}
*/
const stripOptions = {
functions: stripFunctions
};
const babelOptions = {
es5: es5Options(buildType),
es6: moduleOptions(buildType)
};
const rootFile = 'src/index.js';
return {
input: rootFile,
output: outputOptions,
plugins: [
jscc(jsccOptions[buildType] || jsccOptions.release),
shaderChunks(buildType !== 'debug'),
engineLayerImportValidation(rootFile, buildType === 'debug'),
buildType !== 'debug' ? strip(stripOptions) : undefined,
babel(babelOptions[moduleFormat]),
spacesToTabs(buildType !== 'debug')
]
};
}
/**
* Build an ES5 target that rollup is supposed to build.
*
* @param {string} name - The name, like `pcx` or `VoxParser`.
* @param {string} input - The input file, like `extras/index.js`.
* @param {string} [output] - If not given, input is used.
* @returns {RollupOptions} One rollup target.
*/
function scriptTarget(name, input, output) {
return {
input: input,
output: {
name: name,
banner: getBanner(''),
file: output || input.replace('.mjs', '.js'),
format: 'umd',
indent: '\t',
globals: { playcanvas: 'pc' }
},
plugins: [
resolve(),
babel(es5Options('release')),
spacesToTabs(true)
],
external: ['playcanvas'],
cache: false
};
}
/**
* Build an ES6 target that rollup is supposed to build.
*
* @param {string} name - The name, like `pcx` or `VoxParser`.
* @param {string} input - The input file, like `extras/index.js`.
* @param {string} output - The output file, like `build/playcanvas-extras.mjs`.
* @returns {RollupOptions} One rollup target.
*/
function scriptTargetEs6(name, input, output) {
return {
input: input,
output: {
name: name,
banner: getBanner(''),
dir: output,
format: 'es',
indent: '\t',
preserveModules: true
},
plugins: [
resolve(),
babel(moduleOptions('release')),
spacesToTabs(true)
],
external: ['playcanvas', 'fflate']
};
}
const target_extras = [
scriptTarget('pcx', 'extras/index.js', 'build/playcanvas-extras.js'),
scriptTargetEs6('pcx', 'extras/index.js', 'build/playcanvas-extras.mjs'),
scriptTarget('VoxParser', 'scripts/parsers/vox-parser.mjs')
];
/** @type {RollupOptions} */
const target_types = {
input: 'types/index.d.ts',
output: [{
file: 'build/playcanvas.d.ts',
footer: 'export as namespace pc;',
format: 'es'
}],
plugins: [
dts()
]
};
export default (args) => {
/** @type {RollupOptions[]} */
let targets = [];
const envTarget = process.env.target ? process.env.target.toLowerCase() : null;
if (envTarget === 'types') {
targets.push(target_types);
} else if (envTarget === 'extras') {
targets = targets.concat(target_extras);
} else {
['release', 'debug', 'profiler', 'min'].forEach((t) => {
['es5', 'es6'].forEach((m) => {
if (envTarget === null || envTarget === t || envTarget === m || envTarget === `${t}_${m}`) {
targets.push(buildTarget(t, m));
}
});
});
if (envTarget === null) {
// no targets specified, build them all
targets = targets.concat(target_extras);
}
}
return targets;
};