values helper not working as expected

I was trying to get something like the following MERGE statement running:

const rows = [
  { id: 1, name: "Ana" },
  { id: 2, name: "Peter" },
]

// use VALUES in fragment to trigger values helper
const valuesFragment = sql`VALUES ${sql(rows, 'id', 'name')}`

sql`
MERGE INTO "table"
USING ( ${valuesFragment} ) AS "values" ( "id", "name" )
...
`

But this ended up throwing the UNDEFINED_VALUE, 'Undefined values are not allowed error.

After some digging i found the reason to be that the first argument of types.js:valuesBuilder() is an array of array:

[
  [
    { id: 1, name: "Ana" },
    { id: 2, name: "Peter" },
  ]
]

so accessing the columns value for 'id' and 'name' failed because the row is an array and not the row object itself.

I think the issue for this in types.js:131 where multi is calculated from first[0] instead of just first, like in the insert helper.
After switching to just first it worked for my VALUES statement but i am not sure if i broke somehing else.

Is my assumption correct or am i using the values helper incorrectly?

Happy to submit a fix if this is actually a bug :)

Edit

Yes, i broke something. Using arrays of primitive values no longer works (like in: id IN ${psql([1, 2])}. Ended up changing the builder for in to wrap it's first parameter sent to the values builder always as a nested array.

Start in types.js:131 at valuesBuilder(), then compare how the insert and in helpers shape their first argument. Reproduce both the object-row VALUES example and the primitive array example; done means VALUES handles row objects without breaking expressions such as id IN ${psql([1, 2])}.