Always watch file changes even HMR is disabled

[AlexandreBonaventure]

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Describe the bug

Disabling HMR with server.hmr: false is not invalidating cache on file change.
I would expect that when hmr is disabled we should still be able to pick up the changes upon browser refresh.

Reproduction

https://github.com/AlexandreBonaventure/vite-hmr-disabled-bug

1. Run dev server
2. Change something in app.vue
3. Refresh page and notice it did nothing

System Info

• vite version: 2.0.0.beta-23
• Operating System: Mac OS
• Node version: 14.2
• Package manager (npm/yarn/pnpm) and version: yarn v1

[AlexandreBonaventure]

Worth noting that it could be relevant to #1273 and #1434. Since if you are able to run vite dev --mode production + server.hmr: false that's a good alternative to setup environment for writing e2e tests in development

[jonlepage]

in nwjs or electron app , it possible to need to disable hmr for any reason.
but server.hmr: false should also watch file change and allow applications restart !
Can we reopen this ? @yyx990803

[patak-dev]

Please create a new issue so we can properly track this request