How to skip files rebuild everytime the app runs in dev mode?

[keyserfaty]

Is there anyway I can skip the files being rebuild every time the build runs? I don't see why I would want that in files that haven't change. Am I missing something?
Thanks 👍

[alexander-akait]

@keyserfaty why your need this feature? Webpack v2 and above using cache for loaders by default and don't emit files if they not changed.

[buzinas]

@evilebottnawi I use webpack 3 already, and what you're saying doesn't happen at all.

Every time I touch a css file which has a reference to a .png file (for background, for example), the file-loader emits the png file again and again.

Most of the files in my project takes 200~500ms to rebuild when watching, but some of them which have many PNG files referenced on it, sometimes it takes > 5s, it's awful.

[alexander-akait]

@buzinas hm, yes, I'll try to find a solution, but I think it's related more to css-loader, than file-loader

[michael-ciniawsky]

+ const cache = {}

 if (options.emitFile === undefined || options.emitFile) {
   // Don't emit the file again
+ if (cache[outputPath]) return

+ cache[outputPath] = true
  this.emitFile(outputPath, content);
 }

?

[michael-ciniawsky]

Please test and try out #213

[buzinas]

Why was this closed even though it wasn't fixed?

[michael-ciniawsky]

It's not possible to fix this within file-loader the e.g compiler.(Input|Output)FileSystem etc need to handle this instead. file-loader just pushes the file contents to module.assets and takes care of the rewriting the file paths, no convenient way to fix this here

[alexander-akait]

@buzinas Yes should be fixed in webpack, feel free to create issue in webpack 👍