Bugfixes

• fix incorrect concatenation of modules when multiple runtimes are involved
  • fixes a "This should not happen" error
  • fixes a __webpack_require__(null) problem
• run CLI correctly after installing
• fixes a huge performance issue when processing minimized code with SourceMap
• Use string[] types instead of [string, ...string[]] for arrays that must not be empty
  • this is more convinient to use

Performance

• avoid incorrect store of counts in the ProgressPlugin, which causes unneeded serialization of the Persistent Cache
• upgrade terser-webpack-plugin for performance improvements
• upgrade webpack-sources for performance improvements