How to write loader with HMR

[linlinyang]

when develop a loader, How I develop it in my demo with HMR. resolveLoader: { alias: { 'my-loader': require.resolve('../lib/index.js') } }, I modify my loader files ../lib/index.js, demo do not update

[alexander-akait]

I think we should improve docs and provide example how to write a simple loader/plugin (I think most popular is working with assets)

[linlinyang]

@evilebottnawi I read the loader api and try to write it, but it‘'s inconvenient when id develop it. Cannot get the loader result immediate