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mohemmionic5/Mohem/node_modules_/stats-webpack-plugin/index.js

59 lines
1.4 KiB
JavaScript

var _ = require('lodash')
/**
* Create a new StatsPlugin that causes webpack to generate a stats file as
* part of the emitted assets.
* @constructor
* @param {String} output Path to output file.
* @param {Object} options Options passed to the stats' `.toJson()`.
*/
function StatsPlugin (output, options, cache) {
this.output = output
this.options = options
this.cache = cache
}
function onEmit (output, options, cache) {
return function (compilation, done) {
var result
compilation.assets[output] = {
size: function getSize () {
return result ? result.length : 0
},
source: function getSource () {
var stats = compilation.getStats().toJson(options)
var result
if (cache) {
cache = _.merge(cache, stats)
if (stats.errors) cache.errors = stats.errors
if (stats.warnings) cache.warnings = stats.warnings
result = JSON.stringify(cache)
} else {
result = JSON.stringify(stats)
}
return result
}
}
done()
}
}
StatsPlugin.prototype.apply = function apply (compiler) {
var output = this.output
var options = this.options
var cache = this.cache
var onEmitCallback = onEmit(output, options, cache)
if (compiler.hooks) {
compiler.hooks.emit.tapAsync('StatsPlugin', onEmitCallback)
} else {
compiler.plugin('emit', onEmitCallback)
}
}
module.exports = StatsPlugin