// node:v8: only what packages probe at load. No startup snapshot is ever being built;
// heap introspection and the serializer refuse, since a page cannot reach V8's.
import { refused, refusedClass } from "./refuse";

const WHY = "the page cannot reach V8's internals";

export const v8 = {
  startupSnapshot: {
    isBuildingSnapshot: (): number => 0, // Node answers 0, the binding's flag, not false
    addSerializeCallback: refused("v8", "startupSnapshot.addSerializeCallback", "no snapshot is being built"),
    addDeserializeCallback: refused("v8", "startupSnapshot.addDeserializeCallback", "no snapshot is being built"),
    setDeserializeMainFunction: refused("v8", "startupSnapshot.setDeserializeMainFunction", "no snapshot is being built"),
  },
  getHeapStatistics: refused("v8", "getHeapStatistics", WHY),
  getHeapSpaceStatistics: refused("v8", "getHeapSpaceStatistics", WHY),
  getHeapSnapshot: refused("v8", "getHeapSnapshot", WHY),
  writeHeapSnapshot: refused("v8", "writeHeapSnapshot", WHY),
  setFlagsFromString: refused("v8", "setFlagsFromString", WHY),
  cachedDataVersionTag: refused("v8", "cachedDataVersionTag", WHY),
  serialize: refused("v8", "serialize", WHY),
  deserialize: refused("v8", "deserialize", WHY),
  getCppHeapStatistics: refused("v8", "getCppHeapStatistics", WHY),
  getHeapCodeStatistics: refused("v8", "getHeapCodeStatistics", WHY),
  isStringOneByteRepresentation: refused("v8", "isStringOneByteRepresentation", WHY),
  queryObjects: refused("v8", "queryObjects", WHY),
  setHeapSnapshotNearHeapLimit: refused("v8", "setHeapSnapshotNearHeapLimit", WHY),
  startCpuProfile: refused("v8", "startCpuProfile", WHY),
  stopCoverage: refused("v8", "stopCoverage", WHY),
  takeCoverage: refused("v8", "takeCoverage", WHY),
  GCProfiler: refusedClass("v8", "GCProfiler", WHY),
  /** Hooks into every promise's lifecycle; nothing here can observe that. */
  promiseHooks: {
    createHook: refused("v8", "promiseHooks.createHook", WHY),
    onInit: refused("v8", "promiseHooks.onInit", WHY),
    onBefore: refused("v8", "promiseHooks.onBefore", WHY),
    onAfter: refused("v8", "promiseHooks.onAfter", WHY),
    onSettled: refused("v8", "promiseHooks.onSettled", WHY),
  },
};