CSS imports disappear in webpack 5 production builds when sideEffects is omitted
CSS imports missing in webpack 5 production builds Goal: Determine how webpack 5 should interpret a missing sideEffects field in package.json when deciding whether to preserve CSS imports during production‑mode tree shaking. In development mode, webpack does not apply sideEffects‑based tree shaking, so CSS imports remain in the bundle regardless of the field
antdesign
webpack