Depends on what you are measuring. If 95% of what you care for is development mode, then it may not even be faster. Individual files only have to be compiled on

Depends on what you are measuring. If 95% of what you care for is development mode, then it may not even be faster. Individual files only have to be compiled once in watch mode. For some bundlers even between builds. If you measure production builds, it's a different story. As every change has to most likely redo tree shaking and minifying over all the code. If you want source maps, it gets even worse.