Function deserializeError

lib/internal/error_serdes.js:164–200

(error)

let deserialize;
function deserializeError(error) {
  deserialize ??= require('v8').deserialize;
  switch (error[0]) {
    case kSerializedError: {
      const { constructor, properties } = deserialize(error.subarray(1));
      const ctor = errors[constructor];
      ObjectDefineProperty(properties, SymbolToStringTag, {
        __proto__: null,
        value: { __proto__: null, value: 'Error', configurable: true },
        enumerable: true,
      });
      if ('cause' in properties && 'value' in properties.cause) {
        properties.cause.value = deserializeError(properties.cause.value);
      }
      return ObjectCreate(ctor.prototype, properties);
    }
    case kSerializedObject:
      return deserialize(error.subarray(1));
    case kInspectedError:
      return fromBuffer(error).toString('utf8');
    case kInspectedSymbol: {
      const buf = fromBuffer(error);
      return SymbolFor(StringPrototypeSubstring(buf.toString('utf8'), kSymbolStringLength, buf.length - 1));
    }
    case kCustomInspectedObject:
      return {
        __proto__: null,
        [customInspectSymbol]: () => fromBuffer(error).toString('utf8'),
      };
    case kCircularReference:
      return {
        __proto__: null,
        [customInspectSymbol]: () => '[Circular object]',
      };
  }
  require('assert').fail('This should not happen');
}

module.exports = { serializeError, deserializeError };