We've always been keen to find tools that can shorten the software development feedback cycle; esbuild is such an example. As the front-end codebase grows larger, we usually face a packaging time of minutes. As a JavaScript bundler optimized for speed, esbuild can reduce this time by a factor of 10 to 100. It is written in Golang and uses a more efficient approach in the process of parsing, printing and source map generation which significantly surpasses build tools such as Webpack and Parcel in building time. esbuild may not be as comprehensive as those tools in JavaScript syntax transformation; however, this doesn't stop many of our teams from switching to esbuild as their default.