Only add once for --watch mode

[silverwind]

When running webpack --watch with incremental compilations and with a static string type source, the module will still add it on every incremental build which is useless and spams the log unneccesarily. Suggesting to emit a string asset only once during --watch. Function/Promise sources should of course be emitted every build because their content may change.

[sindresorhus]

👍

[silverwind]

Not super familar with webpack API, but I think we need to find the correct hook and then call compilation.emitAsset() in it (as opposed to mutating compilation.assets which this module currently does).

[sibiraj-s]

You can do this.

const existingAsset = compilation.getAsset('assetName')

if(!existingAsset) {
  compilation.emitAsset('assetName',  source)
}

[silverwind]

Thanks. Maybe I'll incorporate that in #6 if input is a string (If it's a function, we need to emit every time).