Function instantiate

ses.cjs:9045–9104

(
  compartmentPrivateFields,
  moduleAliases,
  moduleRecord)

 }

const        instantiate=  (
  compartmentPrivateFields,
  moduleAliases,
  moduleRecord)=>
     {
  const { compartment, moduleSpecifier, resolvedImports, staticModuleRecord}=
    moduleRecord;
  const { instances}=   weakmapGet(compartmentPrivateFields, compartment);

  // Memoize.
  if( mapHas(instances, moduleSpecifier)) {
    return mapGet(instances, moduleSpecifier);
   }

  validateStaticModuleRecord(staticModuleRecord, moduleSpecifier);

  const importedInstances=  new Map();
  let moduleInstance;
  if( isPrecompiled(staticModuleRecord)) {
    validatePrecompiledStaticModuleRecord(staticModuleRecord, moduleSpecifier);
    moduleInstance=  makeModuleInstance(
      compartmentPrivateFields,
      moduleAliases,
      moduleRecord,
      importedInstances);

   }else if( isThirdParty(staticModuleRecord)) {
    validateThirdPartyStaticModuleRecord(staticModuleRecord, moduleSpecifier);
    moduleInstance=  makeThirdPartyModuleInstance(
      compartmentPrivateFields,
      staticModuleRecord,
      compartment,
      moduleAliases,
      moduleSpecifier,
      resolvedImports);

   }else {
    throw TypeError(
       `importHook must return a static module record, got ${q(
        staticModuleRecord)
        }`);

   }

  // Memoize.
  mapSet(instances, moduleSpecifier, moduleInstance);

  // Link dependency modules.
  for( const [importSpecifier, resolvedSpecifier]of  entries(resolvedImports)) {
    const importedInstance=  link(
      compartmentPrivateFields,
      moduleAliases,
      compartment,
      resolvedSpecifier);

    mapSet(importedInstances, importSpecifier, importedInstance);
   }