[reshow-app] Trace build performance.

[HillLiu]

In Plan

Done

webpack 5

• Prepare webpack 5.x #70

React-pdf

• Webpack production bundling react-pdf is super slow wojtekmaj/react-pdf#93

0–100 in two seconds — speed up webpack

• https://medium.com/ottofellercom/0-100-in-two-seconds-speed-up-webpack-465de691ed4a

OutOfDate

DllPlugin

• https://webpack.js.org/plugins/dll-plugin/
• https://github.com/webpack/webpack/blob/master/examples/explicit-vendor-chunk/README.md

[HillLiu]

Other performance

nodejs/undici#1203