Created by: yicheny
Currently, webpack5 caching is not working
If the cache was in effect, it would generate files with a '.pack' suffix, like ：
And now, the generated result looks like this：
The reason is that 'compiler.close()' is not called
webpack will generate the cache in 'compiler.close()'
Run 'npm run build' to verify the effect
has a huge impact on compilation speed in a project