92% chunk asset optimization - webpack

问题

It seems that webpack gets stuck on 92% chunk asset optimization for about 30+ seconds to show a simple js/css change. This is too long for anyone sane to sit and wait that much of their life to see something that should be rendered near instantly.

We're in development mode (so we need source maps, which add to the latency) but it should still NOT be 30+ seconds. Also, we're not using uglify (which I've seen mentioned on GitHub as taking up a good amount of time).

How can we get the build time to be near instant, or much much faster than right now?

UPDATE

Here is the laravel-mix file:

let mix = require('laravel-mix');

mix.react('resources/assets/js/app.js', 'public/js')
   .sass('resources/assets/sass/app.scss', 'public/css')
   .options({
     processCssUrls: false
   });

mix.webpackConfig({
    // Note: First build will always be slower regardless
    // Here we're talking about rebuild time

    // If commented out, rebuild is ~6 secs
    // devtool: "inline-source-map",

    // If not commented out, rebuild is 30+ secs
    devtool: "inline-source-map",
});

I found inline-source-map to be the best for quickest debugging, as it provides the most detail on which line of error to fix in source, very very straight forward on what to fix where. I find other types are more cryptic in comparison and there is no indication of which line number to fix in source, so it takes much longer to debug.

How do you guys do it? Is there a way to rebuild really fast while still being able to debug with the error line number in source to fix it (shown in chrome devtools console)?

回答1:

I've had great success using a combination of the following:

https://github.com/mzgoddard/hard-source-webpack-plugin

and

https://github.com/amireh/happypack

HardSourceWebpackPlugin is a plugin for webpack to provide an intermediate caching step for modules. In order to see results, you'll need to run webpack twice with this plugin: the first build will take the normal amount of time. The second build will be signficantly faster.

HappyPack makes initial webpack builds faster by transforming files in parallel.

Report back and let me know how it goes.

回答2:

I have faced the same problem during the execution of ng build command.

I got the following error:

92% chunk asset optimizationKilled

The process has been stopped at 92% but the following commands are working fine for me.

Try these:

pm2 stop all

ng build

pm2 start all

I am using pm2 as my process manager.

I hope it works for you too.

来源：https://stackoverflow.com/questions/49184787/92-chunk-asset-optimization-webpack