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Make filesize stats prettier #265

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Merged
merged 1 commit into from
Jul 28, 2016
Merged

Make filesize stats prettier #265

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48 changes: 30 additions & 18 deletions scripts/build.js
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Original file line number Diff line number Diff line change
Expand Up @@ -9,9 +9,11 @@

process.env.NODE_ENV = 'production';

var chalk = require('chalk');
var fs = require('fs');
var path = require('path');
var filesize = require('filesize');
var gzipSize = require('gzip-size');
var gzipSize = require('gzip-size').sync;
var rimrafSync = require('rimraf').sync;
var webpack = require('webpack');
var config = require('../config/webpack.config.prod');
Expand All @@ -21,28 +23,41 @@ var paths = require('../config/paths');
// if you're in it, you don't end up in Trash
rimrafSync(paths.appBuild + '/*');

function logBuildSize(assets, extension) {
for (var i = 0; i < assets.length; i++) {
var asset = assets[i];
if (asset.name.endsWith('.' + extension)) {
var fileContents = fs.readFileSync(paths.appBuild + '/' + asset.name);
console.log('Size (gzipped) of ' + asset.name + ': ' + filesize(gzipSize.sync(fileContents)));
}
}
}

console.log('Creating an optimized production build...');
webpack(config).run(function(err, stats) {
if (err) {
console.error('Failed to create a production build. Reason:');
console.error(err.message || err);
process.exit(1);
}

console.log(chalk.green('Compiled successfully.'));
console.log();

console.log('File sizes after gzip:');
console.log();
var assets = stats.toJson().assets
.filter(asset => /\.(js|css)$/.test(asset.name))
.map(asset => {
var fileContents = fs.readFileSync(paths.appBuild + '/' + asset.name);
return {
name: asset.name,
size: gzipSize(fileContents)
};
});
assets.sort((a, b) => b.size - a.size);
assets.forEach(asset => {
console.log(
' ' + chalk.dim('build' + path.sep) + chalk.cyan(asset.name) + ': ' +
chalk.green(filesize(asset.size))
);
});
console.log();

var openCommand = process.platform === 'win32' ? 'start' : 'open';
var homepagePath = require(paths.appPackageJson).homepage;
console.log('Successfully generated a bundle in the build folder!');
if (homepagePath) {
console.log('You can now deploy it to ' + homepagePath + '.');
console.log('You can now publish them at ' + homepagePath + '.');
console.log('For example, if you use GitHub Pages:');
console.log();
console.log(' git commit -am "Save local changes"');
Expand All @@ -54,16 +69,13 @@ webpack(config).run(function(err, stats) {
console.log(' git checkout -');
console.log();
} else {
console.log('You can now serve it with any static server.');
console.log('You can now serve them with any static server.');
console.log('For example:');
console.log();
console.log(' npm install -g pushstate-server');
console.log(' pushstate-server build');
console.log(' ' + openCommand + ' http://localhost:9000');
console.log();
var assets = stats.toJson()['assets'];
logBuildSize(assets, 'js');
logBuildSize(assets, 'css');
}
console.log('The bundle is optimized and ready to be deployed to production.');
console.log();
});