stream: remove LazyTransform

No longer necessary given recent stream and event optimziations.

Refs: nodejs#50428
Refs: nodejs#50439

PR-URL: nodejs#50440

benchmark/crypto/hash-stream-creation2.js

@@ -0,0 +1,22 @@
+// Throughput benchmark
+// creates a single hasher, then pushes a minimal data through it
+'use strict';
+const common = require('../common.js');
+const crypto = require('crypto');
+
+const bench = common.createBenchmark(main, {
+  n: [10e3],
+  algo: ['md5' ],
+});
+
+const buf = Buffer.alloc(4);
+
+function main({ algo, n }) {
+  bench.start();
+  for (let i = 0; i < n; ++i) {
+    const h = crypto.createHash(algo);
+    h.end(buf)
+  }
+  bench.end(n);
+}
+

lib/internal/crypto/cipher.js

@@ -56,8 +56,6 @@ const {
 
 const assert = require('internal/assert');
 
-const LazyTransform = require('internal/streams/lazy_transform');
-
 const { normalizeEncoding } = require('internal/util');
 
 const { StringDecoder } = require('string_decoder');

lib/internal/crypto/hash.js

@@ -51,7 +51,7 @@ const {
   isArrayBufferView,
 } = require('internal/util/types');
 
-const LazyTransform = require('internal/streams/lazy_transform');
+const Transform = require('internal/streams/transform');
 
 const kState = Symbol('kState');
 const kFinalized = Symbol('kFinalized');
@@ -69,11 +69,11 @@ function Hash(algorithm, options) {
   this[kState] = {
     [kFinalized]: false,
   };
-  ReflectApply(LazyTransform, this, [options]);
+  ReflectApply(Transform, this, [options]);
 }
 
-ObjectSetPrototypeOf(Hash.prototype, LazyTransform.prototype);
-ObjectSetPrototypeOf(Hash, LazyTransform);
+ObjectSetPrototypeOf(Hash.prototype, Transform.prototype);
+ObjectSetPrototypeOf(Hash, Transform);
 
 Hash.prototype.copy = function copy(options) {
   const state = this[kState];
@@ -133,11 +133,11 @@ function Hmac(hmac, key, options) {
   this[kState] = {
     [kFinalized]: false,
   };
-  ReflectApply(LazyTransform, this, [options]);
+  ReflectApply(Transform, this, [options]);
 }
 
-ObjectSetPrototypeOf(Hmac.prototype, LazyTransform.prototype);
-ObjectSetPrototypeOf(Hmac, LazyTransform);
+ObjectSetPrototypeOf(Hmac.prototype, Transform.prototype);
+ObjectSetPrototypeOf(Hmac, Transform);
 
 Hmac.prototype.update = Hash.prototype.update;
 

src/node_builtins.cc

@@ -125,7 +125,6 @@ BuiltinLoader::BuiltinCategories BuiltinLoader::GetBuiltinCategories() const {
         "internal/tls/parse-cert-string", "internal/tls/secure-context",
         "internal/http2/core", "internal/http2/compat",
         "internal/policy/manifest", "internal/process/policy",
-        "internal/streams/lazy_transform",
 #endif           // !HAVE_OPENSSL
         "sys",   // Deprecated.
         "wasi",  // Experimental.