improve the time reported by the bundler (#1343)

src/Asset.js

@@ -37,6 +37,8 @@ class Asset {
  this.parentBundle = null;
  this.bundles = new Set();
  this.cacheData = {};
+ this.startTime = 0;
+ this.endTime = 0;
  this.buildTime = 0;
  this.bundledSize = 0;
  }

src/Bundle.js

@@ -196,10 +196,17 @@ class Bundle {
 
  await packager.end();
 
- this.bundleTime = Date.now() - startTime;
- for (let asset of this.assets) {
- this.bundleTime += asset.buildTime;
- }
+ let assetArray = Array.from(this.assets);
+ let assetStartTime =
+ this.type === 'map'
+ ? 0
+ : assetArray.sort((a, b) => a.startTime - b.startTime)[0].startTime;
+ let assetEndTime =
+ this.type === 'map'
+ ? 0
+ : assetArray.sort((a, b) => b.endTime - a.endTime)[0].endTime;
+ let packagingTime = Date.now() - startTime;
+ this.bundleTime = assetEndTime - assetStartTime + packagingTime;
  }
 
  async _addDeps(asset, packager, included) {

src/Bundler.js

@@ -495,15 +495,16 @@ class Bundler extends EventEmitter {
  asset.processed = true;
 
  // First try the cache, otherwise load and compile in the background
- let startTime = Date.now();
+ asset.startTime = Date.now();
  let processed = this.cache && (await this.cache.read(asset.name));
  let cacheMiss = false;
  if (!processed || asset.shouldInvalidate(processed.cacheData)) {
  processed = await this.farm.run(asset.name);
  cacheMiss = true;
  }
 
- asset.buildTime = Date.now() - startTime;
+ asset.endTime = Date.now();
+ asset.buildTime = asset.endTime - asset.startTime;
  asset.generated = processed.generated;
  asset.hash = processed.hash;