Function invariant

turbopack/crates/turbopack-node/js/src/child_process/index.ts:220–222

* Utility function to ensure all variants of an enum are handled.

(never: never, computeMessage: (arg: any) => string)

 * Utility function to ensure all variants of an enum are handled.
 */
function invariant(never: never, computeMessage: (arg: any) => string): never {
  throw new Error(`Invariant: ${computeMessage(never)}`)
}