feat(types): strictly typed

[kotamat]

Using StoreObject instead of State allows for more
type-safe calls to the Vuex API from client.

• store.dispatch(), store.commit() has namespaced-typed params and their payloads
  • the params links to definition on VS Code
• The inside of StoreObject-calls(ex, commit()) may have
  any type
• mapXxx() are not changed.
• Not supported root, namespaced flags

and changed code formats.

Please see

• the naming( because of poor English skill..)
• formats ( default prettier format attached )
• some omissions (don't know well whole Vuex codes)

[tommie]

Drive-by comment: thanks for working on this! I don't understand the generics involved in ExtractObjects, but I'm wondering if it would be possible to skip the separate S type param to useStore and also extract that from SO?

You retracted pull/1943, which seems to be the same thing, but doing the above S extraction (and splitting off the reformatting from the individual changes). I'm just curious why you replaced the PR.

[kotamat]

@tommie
ExtractObjects transforms StoreObject to useful type for args/return-value of dispatch() and commit().
like this

const s = {
  modules: {
    foo: {
      modules: {
        hoge: {
          actions: {
            bar: (n: number) => "aaa",
          },
        },
      },
    },
    bar: {
      actions: {
        bal: (x: string) => "aaa",
      },
    },
  },
};

to

{
  "bar/bal": (x: string) => string,
  "foo/hoge/bar": (n: number) => string
}

I'm wondering if it would be possible to skip the separate S type param to useStore and also extract that from SO?

Yes.

You can skip like this

// store is instance of vuex
  const key: InjectionKey<typeof store> = Symbol('key')
  const usedStore = Vuex.useStore(key)

You retracted pull/1943, which seems to be the same thing, but doing the above S extraction (and splitting off the reformatting from the individual changes). I'm just curious why you replaced the PR.

Initially, I have intended to send out the PR to my repo, but I made a mistake and created 1943. So, I reflexively closed it.
Then, I have finished the changes, cleaned-up the commit messages and made this PR.