xm-roadhog/lib/build.js

The xm-roadhog base on roadhog.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

exports.build = build;

var _chalk = require('chalk');

var _chalk2 = _interopRequireDefault(_chalk);

var _fsExtra = require('fs-extra');

var _fsExtra2 = _interopRequireDefault(_fsExtra);

var _path = require('path');

var _path2 = _interopRequireDefault(_path);

var _filesize = require('filesize');

var _filesize2 = _interopRequireDefault(_filesize);

var _gzipSize = require('gzip-size');

var _webpack = require('webpack');

var _webpack2 = _interopRequireDefault(_webpack);

var _recursiveReaddir = require('recursive-readdir');

var _recursiveReaddir2 = _interopRequireDefault(_recursiveReaddir);

var _stripAnsi = require('strip-ansi');

var _stripAnsi2 = _interopRequireDefault(_stripAnsi);

var _paths = require('./config/paths');

var _paths2 = _interopRequireDefault(_paths);

var _getConfig = require('./utils/getConfig');

var _getConfig2 = _interopRequireDefault(_getConfig);

var _applyWebpackConfig = require('./utils/applyWebpackConfig');

var _applyWebpackConfig2 = _interopRequireDefault(_applyWebpackConfig);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

process.env.NODE_ENV = 'production';

var argv = require('yargs').usage('Usage: roadhog build [options]').option('debug', {
  type: 'boolean',
  describe: 'Build with compress',
  default: false
}).option('watch', {
  type: 'boolean',
  alias: 'w',
  describe: 'Watch file changes and rebuild',
  default: false
}).option('output-path', {
  type: 'string',
  alias: 'o',
  describe: 'Specify output path',
  default: null
}).option('analyze', {
  type: 'boolean',
  describe: 'Visualize and analyze your Webpack bundle.',
  default: false
}).help('h').argv;

var rcConfig = void 0;
var outputPath = void 0;
var appBuild = void 0;
var config = void 0;

function build(argv) {
  var paths = (0, _paths2.default)(argv.cwd);

  try {
    rcConfig = (0, _getConfig2.default)(process.env.NODE_ENV, argv.cwd);
  } catch (e) {
    console.log(_chalk2.default.red('Failed to parse .roadhogrc config.'));
    console.log();
    console.log(e.message);
    process.exit(1);
  }

  outputPath = argv.outputPath || rcConfig.outputPath || 'dist';
  appBuild = paths.resolveApp(outputPath);
  config = (0, _applyWebpackConfig2.default)(require('./config/webpack.config.prod')(argv, appBuild, rcConfig, paths), process.env.NODE_ENV);

  return new Promise(function (resolve) {
    // First, read the current file sizes in build directory.
    // This lets us display how much they changed later.
    (0, _recursiveReaddir2.default)(appBuild, function (err, fileNames) {
      var previousSizeMap = (fileNames || []).filter(function (fileName) {
        return (/\.(js|css)$/.test(fileName)
        );
      }).reduce(function (memo, fileName) {
        var contents = _fsExtra2.default.readFileSync(fileName);
        var key = removeFileNameHash(fileName);
        memo[key] = (0, _gzipSize.sync)(contents);
        return memo;
      }, {});

      // Remove all content but keep the directory so that
      // if you're in it, you don't end up in Trash
      _fsExtra2.default.emptyDirSync(appBuild);

      // Start the webpack build
      realBuild(previousSizeMap, resolve, argv);
    });
  });
}

// Input: /User/dan/app/build/static/js/main.82be8.js
// Output: /static/js/main.js
function removeFileNameHash(fileName) {
  return fileName.replace(appBuild, '').replace(/\/?(.*)(\.\w+)(\.js|\.css)/, function (match, p1, p2, p3) {
    return p1 + p3;
  });
}

// Input: 1024, 2048
// Output: "(+1 KB)"
function getDifferenceLabel(currentSize, previousSize) {
  var FIFTY_KILOBYTES = 1024 * 50;
  var difference = currentSize - previousSize;
  var fileSize = !Number.isNaN(difference) ? (0, _filesize2.default)(difference) : 0;
  if (difference >= FIFTY_KILOBYTES) {
    return _chalk2.default.red('+' + fileSize);
  } else if (difference < FIFTY_KILOBYTES && difference > 0) {
    return _chalk2.default.yellow('+' + fileSize);
  } else if (difference < 0) {
    return _chalk2.default.green(fileSize);
  } else {
    return '';
  }
}

// Print a detailed summary of build files.
function printFileSizes(stats, previousSizeMap) {
  var assets = stats.toJson().assets.filter(function (asset) {
    return (/\.(js|css)$/.test(asset.name)
    );
  }).map(function (asset) {
    var fileContents = _fsExtra2.default.readFileSync(appBuild + '/' + asset.name);
    var size = (0, _gzipSize.sync)(fileContents);
    var previousSize = previousSizeMap[removeFileNameHash(asset.name)];
    var difference = getDifferenceLabel(size, previousSize);
    return {
      folder: _path2.default.join(outputPath, _path2.default.dirname(asset.name)),
      name: _path2.default.basename(asset.name),
      size: size,
      sizeLabel: (0, _filesize2.default)(size) + (difference ? ' (' + difference + ')' : '')
    };
  });
  assets.sort(function (a, b) {
    return b.size - a.size;
  });
  var longestSizeLabelLength = Math.max.apply(null, assets.map(function (a) {
    return (0, _stripAnsi2.default)(a.sizeLabel).length;
  }));
  assets.forEach(function (asset) {
    var sizeLabel = asset.sizeLabel;
    var sizeLength = (0, _stripAnsi2.default)(sizeLabel).length;
    if (sizeLength < longestSizeLabelLength) {
      var rightPadding = ' '.repeat(longestSizeLabelLength - sizeLength);
      sizeLabel += rightPadding;
    }
    console.log('  ' + sizeLabel + '  ' + _chalk2.default.dim(asset.folder + _path2.default.sep) + _chalk2.default.cyan(asset.name));
  });
}

// Print out errors
function printErrors(summary, errors) {
  console.log(_chalk2.default.red(summary));
  console.log();
  errors.forEach(function (err) {
    console.log(err.message || err);
    console.log();
  });
}

function doneHandler(previousSizeMap, argv, resolve, err, stats) {
  if (err) {
    printErrors('Failed to compile.', [err]);
    process.exit(1);
  }

  if (stats.compilation.errors.length) {
    printErrors('Failed to compile.', stats.compilation.errors);
    process.exit(1);
  }

  (0, _applyWebpackConfig.warnIfExists)();

  console.log(_chalk2.default.green('Compiled successfully.'));
  console.log();

  console.log('File sizes after gzip:');
  console.log();
  printFileSizes(stats, previousSizeMap);
  console.log();

  if (argv.analyze) {
    console.log('Analyze result is generated at ' + _chalk2.default.cyan('dist/stats.html') + '.');
    console.log();
  }

  resolve();
}

// Create the production build and print the deployment instructions.
function realBuild(previousSizeMap, resolve, argv) {
  if (argv.debug) {
    console.log('Creating an development build without compress...');
  } else {
    console.log('Creating an optimized production build...');
  }

  var compiler = (0, _webpack2.default)(config);
  var done = doneHandler.bind(null, previousSizeMap, argv, resolve);
  if (argv.watch) {
    compiler.watch(200, done);
  } else {
    compiler.run(done);
  }
}

// Run.
if (require.main === module) {
  build(_extends({}, argv, { cwd: process.cwd() }));
}