Function expectRequired

test/contract/p4-schema.test.ts:119–127

(
  value: Record<string, unknown>,
  required: ReadonlyArray<string>,
  label: string,
)

}

function expectRequired(
  value: Record<string, unknown>,
  required: ReadonlyArray<string>,
  label: string,
) {
  for (const field of required) {
    expect(field in value, `${label}: missing required field "${field}"`).toBe(true);
  }
}

function expectStringOrNull(v: unknown, label: string) {
  if (v === null) return;