vue/packages/vue-server-renderer/server-plugin.js
2017-05-02 15:58:34 +08:00

100 lines
2.7 KiB
JavaScript

'use strict';
/* */
var isJS = function (file) { return /\.js(\?[^.]+)?$/.test(file); };
var ref = require('chalk');
var red = ref.red;
var yellow = ref.yellow;
var prefix = "[vue-server-renderer-webpack-plugin]";
var warn = exports.warn = function (msg) { return console.error(red((prefix + " " + msg + "\n"))); };
var tip = exports.tip = function (msg) { return console.log(yellow((prefix + " " + msg + "\n"))); };
var validate = function (compiler) {
if (compiler.options.target !== 'node') {
warn('webpack config `target` should be "node".');
}
if (compiler.options.output && compiler.options.output.libraryTarget !== 'commonjs2') {
warn('webpack config `output.libraryTarget` should be "commonjs2".');
}
if (!compiler.options.externals) {
tip(
'It is recommended to externalize dependencies in the server build for ' +
'better build performance.'
);
}
};
var VueSSRServerPlugin = function VueSSRServerPlugin (options) {
if ( options === void 0 ) options = {};
this.options = Object.assign({
filename: 'vue-ssr-server-bundle.json'
}, options);
};
VueSSRServerPlugin.prototype.apply = function apply (compiler) {
var this$1 = this;
validate(compiler);
compiler.plugin('emit', function (compilation, cb) {
var stats = compilation.getStats().toJson();
var entryName = Object.keys(stats.entrypoints)[0];
var entryInfo = stats.entrypoints[entryName];
if (!entryInfo) {
// #5553
return cb()
}
var entryAssets = entryInfo.assets.filter(isJS);
if (entryAssets.length > 1) {
throw new Error(
"Server-side bundle should have one single entry file. " +
"Avoid using CommonsChunkPlugin in the server config."
)
}
var entry = entryAssets[0];
if (!entry || typeof entry !== 'string') {
throw new Error(
("Entry \"" + entryName + "\" not found. Did you specify the correct entry option?")
)
}
var bundle = {
entry: entry,
files: {},
maps: {}
};
stats.assets.forEach(function (asset) {
if (asset.name.match(/\.js$/)) {
bundle.files[asset.name] = compilation.assets[asset.name].source();
} else if (asset.name.match(/\.js\.map$/)) {
bundle.maps[asset.name.replace(/\.map$/, '')] = JSON.parse(compilation.assets[asset.name].source());
}
// do not emit anything else for server
delete compilation.assets[asset.name];
});
var json = JSON.stringify(bundle, null, 2);
var filename = this$1.options.filename;
compilation.assets[filename] = {
source: function () { return json; },
size: function () { return json.length; }
};
cb();
});
};
module.exports = VueSSRServerPlugin;