增加了git功能，但是还未完善

node_modules/readable-stream/lib/internal/streams/lazy_transform.js

@@ -0,0 +1,51 @@
+// 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 { ObjectDefineProperties, ObjectDefineProperty, ObjectSetPrototypeOf } = require('../../ours/primordials')
+const stream = require('../../stream')
+const { getDefaultEncoding } = require('../crypto/util')
+module.exports = LazyTransform
+function LazyTransform(options) {
+  this._options = options
+}
+ObjectSetPrototypeOf(LazyTransform.prototype, stream.Transform.prototype)
+ObjectSetPrototypeOf(LazyTransform, stream.Transform)
+function makeGetter(name) {
+  return function () {
+    stream.Transform.call(this, this._options)
+    this._writableState.decodeStrings = false
+    if (!this._options || !this._options.defaultEncoding) {
+      this._writableState.defaultEncoding = getDefaultEncoding()
+    }
+    return this[name]
+  }
+}
+function makeSetter(name) {
+  return function (val) {
+    ObjectDefineProperty(this, name, {
+      __proto__: null,
+      value: val,
+      enumerable: true,
+      configurable: true,
+      writable: true
+    })
+  }
+}
+ObjectDefineProperties(LazyTransform.prototype, {
+  _readableState: {
+    __proto__: null,
+    get: makeGetter('_readableState'),
+    set: makeSetter('_readableState'),
+    configurable: true,
+    enumerable: true
+  },
+  _writableState: {
+    __proto__: null,
+    get: makeGetter('_writableState'),
+    set: makeSetter('_writableState'),
+    configurable: true,
+    enumerable: true
+  }
+})