refactor: move createHash onto environment object

Author: andipaetzold

src/crypto/hash.ts

@@ -1,8 +1,8 @@
-import { createHash } from "../environment/index.js";
+import { environment } from "../environment/index.js";
 import { fixBufferLength } from "../util.js";
 
 export function hash(algorithm: string, buffers: Buffer[], length?: number): Buffer {
-    const digest = createHash(algorithm);
+    const digest = environment.createHash(algorithm);
 
     for (const buffer of buffers) {
         digest.update(buffer);

src/environment/browser.ts

@@ -1,10 +1,10 @@
 import browserifyAES from "browserify-aes/browser.js";
 import { inflate as pakoInflate } from "pako";
 import type { Environment } from "./types.js";
-
-export { default as createHash } from "create-hash";
+import { default as createHash } from "create-hash";
 
 export const environment: Environment = {
     inflate: (data) => Buffer.from(pakoInflate(data)),
     createDecipheriv: browserifyAES.createDecipheriv,
+    createHash,
 };

src/environment/node.ts

@@ -1,10 +1,9 @@
+import { createDecipheriv, createHash } from "node:crypto";
 import { inflateSync } from "node:zlib";
 import type { Environment } from "./types.js";
-import { createDecipheriv } from "crypto";
-
-export { createHash } from "crypto";
 
 export const environment: Environment = {
     inflate: (data) => inflateSync(data),
     createDecipheriv,
+    createHash,
 };

src/environment/types.ts

@@ -1,9 +1,15 @@
 export type Environment = {
     inflate: (data: Buffer) => Buffer;
     createDecipheriv: (algorithm: string, key: Buffer, iv: Buffer) => Decipher;
+    createHash: (algorithm: string) => Hash;
 };
 
 export type Decipher = {
     setAutoPadding: (padding: boolean) => void;
     update: (data: Buffer) => Buffer;
 };
+
+export type Hash = {
+    update: (data: Buffer) => void;
+    digest: () => Buffer;
+};