const stream = require('stream');
const util = require('util');
const internalUtil = require('internal/util');
+const LazyTransform = require('internal/streams/lazy_transform');
const DH_GENERATOR = 2;
const StringDecoder = require('string_decoder').StringDecoder;
-function LazyTransform(options) {
- this._options = options;
-}
-util.inherits(LazyTransform, stream.Transform);
-
-[
- '_readableState',
- '_writableState',
- '_transformState'
-].forEach(function(prop, i, props) {
- Object.defineProperty(LazyTransform.prototype, prop, {
- get: function() {
- stream.Transform.call(this, this._options);
- this._writableState.decodeStrings = false;
- this._writableState.defaultEncoding = 'binary';
- return this[prop];
- },
- set: function(val) {
- Object.defineProperty(this, prop, {
- value: val,
- enumerable: true,
- configurable: true,
- writable: true
- });
- },
- configurable: true,
- enumerable: true
- });
-});
-
-
exports.createHash = exports.Hash = Hash;
function Hash(algorithm, options) {
if (!(this instanceof Hash))
--- /dev/null
+// LazyTransform is a special type of Transform stream that is lazily loaded.
+// This is used for performance with bi-API-ship: when two APIs are available
+// for the stream, one conventional and one non-conventional.
+'use strict';
+
+const stream = require('stream');
+const util = require('util');
+
+module.exports = LazyTransform;
+
+function LazyTransform(options) {
+ this._options = options;
+}
+util.inherits(LazyTransform, stream.Transform);
+
+[
+ '_readableState',
+ '_writableState',
+ '_transformState'
+].forEach(function(prop, i, props) {
+ Object.defineProperty(LazyTransform.prototype, prop, {
+ get: function() {
+ stream.Transform.call(this, this._options);
+ this._writableState.decodeStrings = false;
+ this._writableState.defaultEncoding = 'binary';
+ return this[prop];
+ },
+ set: function(val) {
+ Object.defineProperty(this, prop, {
+ value: val,
+ enumerable: true,
+ configurable: true,
+ writable: true
+ });
+ },
+ configurable: true,
+ enumerable: true
+ });
+});
'lib/internal/socket_list.js',
'lib/internal/repl.js',
'lib/internal/util.js',
+ 'lib/internal/streams/lazy_transform.js',
],
},