Add tests to cover all state transitions in dev mode and fix some issues #6648
Description
FYI this is the state diagram for the previous implementation.
flowchart TD
start((start)) --> initial
initial --> bundling
bundling -- error --> bundle_error
bundle_error -- file change --> bundling
bundling -- file change --> bundling
bundling -- success --> bundled
bundled -- file change --> generating_hmr_patch
generating_hmr_patch -- error --> bundled
generating_hmr_patch -- success (hmr) --> bundled
generating_hmr_patch -- success (no hmr) --> bundling
generating_hmr_patch -- file change --> generating_hmr_patch
A@{ shape: text, label: "when environment is closed, it will go to 'initial'" }
The cases that are currently not working are:
-
initial -> bundling -> bundle_error -> bundling(i.e. error in the initial bundle) -
bundling -> bundling(i.e. file change while the bundle is generated)- the build hangs
-
bundled -> generating_hmr_patch -> generating_hmr_patch(i.e. file change while generating the patch file)- the new content is not output