Function foo

packages-private/dts-test/ref.test-d.ts:490–527

(
    a: MaybeRef<string>,
    b: () => string,
    c: MaybeRefOrGetter<string>,
    d: ComputedRef<string>,
  )

describe('toRef <-> toValue', () => {
  function foo(
    a: MaybeRef<string>,
    b: () => string,
    c: MaybeRefOrGetter<string>,
    d: ComputedRef<string>,
  ) {
    const r = toRef(a)
    expectType<Ref<string>>(r)
    // writable
    r.value = 'foo'

    const rb = toRef(b)
    expectType<Readonly<Ref<string>>>(rb)
    // @ts-expect-error ref created from getter should be readonly
    rb.value = 'foo'

    const rc = toRef(c)
    expectType<Readonly<Ref<string> | Ref<string>>>(rc)
    // @ts-expect-error ref created from MaybeReadonlyRef should be readonly
    rc.value = 'foo'

    const rd = toRef(d)
    expectType<ComputedRef<string>>(rd)
    // @ts-expect-error ref created from computed ref should be readonly
    rd.value = 'foo'

    expectType<string>(toValue(a))
    expectType<string>(toValue(b))
    expectType<string>(toValue(c))
    expectType<string>(toValue(d))

    return {
      r: toValue(r),
      rb: toValue(rb),
      rc: toValue(rc),
      rd: toValue(rd),
    }
  }

  expectType<{
    r: string