html-webpack-plugin/index.js

52 lines
1.7 KiB
JavaScript

var fs = require('fs');
var path = require('path');
var tmpl = require('blueimp-tmpl').tmpl;
function HtmlWebpackPlugin(options) {
this.options = options || {};
}
HtmlWebpackPlugin.prototype.apply = function(compiler) {
var self = this;
compiler.plugin('after-emit', function(compiler, callback) {
var webpackStatsJson = compiler.getStats().toJson();
var templateParams = {};
templateParams.webpack = webpackStatsJson;
templateParams.htmlWebpackPlugin = {};
templateParams.htmlWebpackPlugin.assets = self.htmlWebpackPluginAssets(compiler, webpackStatsJson);
templateParams.htmlWebpackPlugin.options = self.options;
var templateFile = self.options.template;
if (!templateFile) {
templateFile = path.join(__dirname, 'default_index.html');
}
var htmlTemplateContent = fs.readFileSync(templateFile, 'utf8');
var html = tmpl(htmlTemplateContent, templateParams);
var outputPath = path.join(compiler.options.output.path, 'index.html');
this.outputFileSystem.writeFile(outputPath, html, callback);
});
};
HtmlWebpackPlugin.prototype.htmlWebpackPluginAssets = function(compiler, webpackStatsJson) {
var assets = {};
for (var chunk in webpackStatsJson.assetsByChunkName) {
var chunkValue = webpackStatsJson.assetsByChunkName[chunk];
// Webpack outputs an array for each chunk when using sourcemaps
if (chunkValue instanceof Array) {
// Is the main bundle always the first element?
chunkValue = chunkValue[0];
}
if (compiler.options.output.publicPath) {
chunkValue = compiler.options.output.publicPath + chunkValue;
}
assets[chunk] = chunkValue;
}
return assets;
};
module.exports = HtmlWebpackPlugin;