What's the best way to replace when + includes

[syabro]

In my code

const COMPONENTS_EXTENSIONS = ['.vst', '.vst3', '.component', '.au', '.aaxplugin', '.app']
      
match(extension)
  .with('pkg', async () => do1())
  .when((_ext) => COMPONENTS_EXTENSIONS.includes(_ext), async () => do2())
  .otherwise(() => {
    throw new Error(`Unsupported file type: ${file}`)
  })

[gvergnaud]

You can use P.union, or pass these values directly to with:

match(extension)
  .with(
    P.union(".vst", ".vst3", ".component", ".au", ".aaxplugin", ".app"),
    async () => do2()
  )
  // OR
  .with(".vst", ".vst3", ".component", ".au", ".aaxplugin", ".app", async () =>
    do2()
  )

[syabro]

Emmm, array constant like COMPONENTS_EXTENSIONS must be used.
Passing values manually sure works
I tried ... COMPONENTS_EXTENSIONS but gets ts errors

[gvergnaud]

It will work if you declare your COMPONENTS_EXTENSIONS variable as const

import {match} from 'ts-pattern'

const COMPONENTS_EXTENSIONS = ['.vst', '.vst3', '.component', '.au', '.aaxplugin', '.app'] as const
      
declare const extension: string

match(extension)
  .with('pkg', async () => {})
  .with(...COMPONENTS_EXTENSIONS, async (x) => {})
   //                                    ^?
  .otherwise(() => {})

playground

[syabro]

Got it. I'm generating array dynamically.

playground