Function isExpressionValue

packages/db/src/query/builder/functions.ts:779–812

(value: CaseWhenValue | undefined)

}

function isExpressionValue(value: CaseWhenValue | undefined): boolean {
  if (isRefProxy(value)) return true
  if (value instanceof Aggregate || value instanceof Func) return true
  if (value == null) return true
  if (
    typeof value === `string` ||
    typeof value === `number` ||
    typeof value === `boolean` ||
    typeof value === `bigint`
  ) {
    return true
  }
  if (value instanceof Date || Array.isArray(value)) return true
  if (typeof value === `object`) {
    const candidate = value as {
      type?: unknown
      args?: unknown
      name?: unknown
      path?: unknown
      value?: unknown
    }

    if (
      (candidate.type === `agg` || candidate.type === `func`) &&
      typeof candidate.name === `string` &&
      Array.isArray(candidate.args)
    ) {
      return true
    }
    if (candidate.type === `ref` && Array.isArray(candidate.path)) return true
    if (candidate.type === `val` && `value` in candidate) return true
  }
  return false
}

function isConditionValue(value: CaseWhenValue | undefined): boolean {
  return isExpressionValue(value) && !Array.isArray(value)