Multiple update with array casting issue

Hey, im trying to update multiple rows with a real[] column.

My approach is this:

const data = [[123, [1.2,3.4,5.6]], ... ]

UPDATE mytable as t
  SET myreal = (v.myreal)::real[]
  FROM (VALUES ${sql(data)}) AS v(id, myreal)
  WHERE t.id = (v.id)::int 

This throws a PG error: malformed array literal: "1.2,3.4,5.6". This leads me to believe that I cannot hand an array in like this as it is being cast to a string and sent directly. I found a workaround using const data = [[123, '{'+[1.2,3.4,5.6].join(',')+'}'], ... ].

Am I doing something wrong?

Reproduce the shown UPDATE against PostgreSQL with the provided data, then trace how Postgres.js serializes arrays in the VALUES expression. Done means determining whether JavaScript arrays can be passed directly for real[] columns and adding regression coverage if the behavior is a bug; the issue names no repository files or tests.