useQuries and combine, order of results

[tbowmo]

If I use useQueries() to retrieve data from a number of different sources, that I want to merge in combine, is the order of the items in combine always ensured?

considering the below example, I have 3 different dataFetches that all returns an object with key/value pairs, that I want to merge in a specific order, so keys in fetchData2 can overwrite keys received in fetchData1, and likewise fetchData3 can override keys received in fetchData1 or fetchData2. Is this correct? Or should I have some extra indicator in my data from each queryFn that indicates which query method is handled?

Also what happens if f.ex. queryKey 'data-2' is invalidated / removed, will it keep the same order in combine?

const x = useQueries({
  queries: [
     { queryKey: 'data-1', queryFn: () => fetchData1() }
     { queryKey: 'data-2', queryFn: () => fetchData2() }
     { queryKey: 'data-3', queryFn: () => fetchData3() }
  ],
  combine: (data) => {
    return data.reduce((result, current) => {
    return Object.assign(result, current.data)
  }, {})
})

[berkaycirak]

How do you share code like that? I mean, your code is colorful :)

[tbowmo]

when you insert codeblocks with three backticks, it's possible to specify the language of the code, ie. js, c#, bash, etc. ref https://github.com/jincheng9/markdown_supported_languages

// no language specified
const x = 1

// js specified, as ```js
const x = 1

[berkaycirak]

Thanks

[TkDodo]

yes, the order you get into combine is the same as the order in queries

[tbowmo]

So if data2 is invalidated, combine will receive all 3 resultsets in the same order again?

That's excellent, and what I hoped :)

[TkDodo]

yes