Precise source maps

As source-maps are expensive to use we changed the default to a less precise but way faster implementation. To give people still the opportunity to have precise but slow source-maps we added that flag. It changes the Sourcemaps from Eval based to Precise source-maps.

{
    "experimental": {
        "preciseSourceMaps": true
    }
}

info

When you turn that on, initial build and rebuilds will be slower.