lepu-test-platform-web/node_modules/webpack-bundle-analyzer/lib/viewer.js

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'use strict';
var startServer = function () {
var _ref = _asyncToGenerator(function* (bundleStats, opts) {
var _ref2 = opts || {},
_ref2$port = _ref2.port,
port = _ref2$port === undefined ? 8888 : _ref2$port,
_ref2$host = _ref2.host,
host = _ref2$host === undefined ? '127.0.0.1' : _ref2$host,
_ref2$openBrowser = _ref2.openBrowser,
openBrowser = _ref2$openBrowser === undefined ? true : _ref2$openBrowser,
_ref2$bundleDir = _ref2.bundleDir,
bundleDir = _ref2$bundleDir === undefined ? null : _ref2$bundleDir,
_ref2$logger = _ref2.logger,
logger = _ref2$logger === undefined ? new Logger() : _ref2$logger,
_ref2$defaultSizes = _ref2.defaultSizes,
defaultSizes = _ref2$defaultSizes === undefined ? 'parsed' : _ref2$defaultSizes,
_ref2$excludeAssets = _ref2.excludeAssets,
excludeAssets = _ref2$excludeAssets === undefined ? null : _ref2$excludeAssets;
var analyzerOpts = { logger, excludeAssets };
var chartData = getChartData(analyzerOpts, bundleStats, bundleDir);
if (!chartData) return;
var app = express();
// Explicitly using our `ejs` dependency to render templates
// Fixes #17
app.engine('ejs', require('ejs').renderFile);
app.set('view engine', 'ejs');
app.set('views', `${projectRoot}/views`);
app.use(express.static(`${projectRoot}/public`));
app.use('/', function (req, res) {
res.render('viewer', {
mode: 'server',
get chartData() {
return JSON.stringify(chartData);
},
defaultSizes: JSON.stringify(defaultSizes)
});
});
var server = http.createServer(app);
yield new Promise(function (resolve) {
server.listen(port, host, function () {
resolve();
var url = `http://${host}:${server.address().port}`;
logger.info(`${bold('Webpack Bundle Analyzer')} is started at ${bold(url)}\n` + `Use ${bold('Ctrl+C')} to close it`);
if (openBrowser) {
opener(url);
}
});
});
var wss = new WebSocket.Server({ server });
wss.on('connection', function (ws) {
ws.on('error', function (err) {
// Ignore network errors like `ECONNRESET`, `EPIPE`, etc.
if (err.errno) return;
logger.info(err.message);
});
});
return {
ws: wss,
http: server,
updateChartData
};
function updateChartData(bundleStats) {
var newChartData = getChartData(analyzerOpts, bundleStats, bundleDir);
if (!newChartData) return;
chartData = newChartData;
wss.clients.forEach(function (client) {
if (client.readyState === WebSocket.OPEN) {
client.send(JSON.stringify({
event: 'chartDataUpdated',
data: newChartData
}));
}
});
}
});
return function startServer(_x, _x2) {
return _ref.apply(this, arguments);
};
}();
function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, arguments); return new Promise(function (resolve, reject) { function step(key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { return Promise.resolve(value).then(function (value) { step("next", value); }, function (err) { step("throw", err); }); } } return step("next"); }); }; }
var path = require('path');
var fs = require('fs');
var http = require('http');
var WebSocket = require('ws');
var _ = require('lodash');
var express = require('express');
var ejs = require('ejs');
var opener = require('opener');
var mkdir = require('mkdirp');
var _require = require('chalk'),
bold = _require.bold;
var Logger = require('./Logger');
var analyzer = require('./analyzer');
var projectRoot = path.resolve(__dirname, '..');
module.exports = {
startServer,
generateReport,
// deprecated
start: startServer
};
function generateReport(bundleStats, opts) {
var _ref3 = opts || {},
_ref3$openBrowser = _ref3.openBrowser,
openBrowser = _ref3$openBrowser === undefined ? true : _ref3$openBrowser,
_ref3$reportFilename = _ref3.reportFilename,
reportFilename = _ref3$reportFilename === undefined ? 'report.html' : _ref3$reportFilename,
_ref3$bundleDir = _ref3.bundleDir,
bundleDir = _ref3$bundleDir === undefined ? null : _ref3$bundleDir,
_ref3$logger = _ref3.logger,
logger = _ref3$logger === undefined ? new Logger() : _ref3$logger,
_ref3$defaultSizes = _ref3.defaultSizes,
defaultSizes = _ref3$defaultSizes === undefined ? 'parsed' : _ref3$defaultSizes,
_ref3$excludeAssets = _ref3.excludeAssets,
excludeAssets = _ref3$excludeAssets === undefined ? null : _ref3$excludeAssets;
var chartData = getChartData({ logger, excludeAssets }, bundleStats, bundleDir);
if (!chartData) return;
ejs.renderFile(`${projectRoot}/views/viewer.ejs`, {
mode: 'static',
chartData: JSON.stringify(chartData),
assetContent: getAssetContent,
defaultSizes: JSON.stringify(defaultSizes)
}, function (err, reportHtml) {
if (err) return logger.error(err);
var reportFilepath = path.resolve(bundleDir || process.cwd(), reportFilename);
mkdir.sync(path.dirname(reportFilepath));
fs.writeFileSync(reportFilepath, reportHtml);
logger.info(`${bold('Webpack Bundle Analyzer')} saved report to ${bold(reportFilepath)}`);
if (openBrowser) {
opener(`file://${reportFilepath}`);
}
});
}
function getAssetContent(filename) {
return fs.readFileSync(`${projectRoot}/public/${filename}`, 'utf8');
}
function getChartData(analyzerOpts) {
var chartData = void 0;
var logger = analyzerOpts.logger;
try {
for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
args[_key - 1] = arguments[_key];
}
chartData = analyzer.getViewerData.apply(analyzer, args.concat([analyzerOpts]));
} catch (err) {
logger.error(`Could't analyze webpack bundle:\n${err}`);
logger.debug(err.stack);
chartData = null;
}
if (_.isPlainObject(chartData) && _.isEmpty(chartData)) {
logger.error("Could't find any javascript bundles in provided stats file");
chartData = null;
}
return chartData;
}