perf: replace md5 package with node:crypto

This is a 3x speedup on my computer.

package.json

@@ -44,9 +44,6 @@
     "prepublishOnly": "pinst --disable",
     "release": "changeset publish"
   },
-  "dependencies": {
-    "md5": "^2.2.1"
-  },
   "devDependencies": {
     "@apollo/server": "4.10.0",
     "@changesets/cli": "2.27.1",
@@ -67,7 +64,6 @@
     "@types/express": "4.17.21",
     "@types/express-serve-static-core": "4.17.43",
     "@types/jest": "29.5.12",
-    "@types/md5": "2.3.5",
     "@types/node": "20.11.17",
     "@types/supertest": "6.0.2",
     "@typescript-eslint/eslint-plugin": "6.21.0",

src/hash.ts

@@ -0,0 +1,5 @@
+import * as crypto from 'node:crypto';
+
+export function md5(text: string): string {
+  return crypto.createHash('md5').update(text).digest('hex');
+}

src/throttler.guard.ts

@@ -1,6 +1,6 @@
 import { CanActivate, ExecutionContext, Injectable } from '@nestjs/common';
 import { Reflector } from '@nestjs/core';
-import * as md5 from 'md5';
+import { md5 } from './hash';
 import {
   Resolvable,
   ThrottlerGenerateKeyFunction,

test/function-overrides/app.module.ts

@@ -2,7 +2,7 @@ import { ExecutionContext, Module } from '@nestjs/common';
 import { APP_GUARD } from '@nestjs/core';
 import { ThrottlerGuard, ThrottlerModule, seconds } from '../../src';
 import { FunctionOverridesThrottlerController } from './function-overrides-throttler.controller';
-import md5 = require('md5');
+import { md5 } from '../utility/hash';
 import assert = require('assert');
 
 @Module({

test/utility/hash.ts

@@ -0,0 +1,5 @@
+import * as crypto from 'node:crypto';
+
+export function md5(text: string): string {
+  return crypto.createHash('md5').update(text).digest('hex');
+}