[Middleware] Parameters Secrets lambda extension

packages/parameters-secrets-extension/README.md

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+<div align="center">
+  <h1>SSM Parameters or Secrets Manager secrets Lambda Extension middleware</h1>
+  <img alt="Middy logo" src="https://raw.githubusercontent.com/middyjs/middy/main/docs/img/middy-logo.svg"/>
+  <p><strong>parameters-secrets-extension (AWS System Manager Parameter) middleware for the middy framework, the stylish Node.js middleware engine for AWS Lambda</strong></p>
+<p>
+  <a href="https://www.npmjs.com/package/@middy/parameters-secrets-extension?activeTab=versions">
+    <img src="https://badge.fury.io/js/%40middy%2Fparameters-secrets-extension.svg" alt="npm version" style="max-width:100%;">
+  </a>
+  <a href="https://packagephobia.com/result?p=@middy/parameters-secrets-extension">
+    <img src="https://packagephobia.com/badge?p=@middy/parameters-secrets-extension" alt="npm install size" style="max-width:100%;">
+  </a>
+  <a href="https://github.com/middyjs/middy/actions/workflows/tests.yml">
+    <img src="https://github.com/middyjs/middy/actions/workflows/tests.yml/badge.svg?branch=main&event=push" alt="GitHub Actions CI status badge" style="max-width:100%;">
+  </a>
+  <br/>
+   <a href="https://standardjs.com/">
+    <img src="https://img.shields.io/badge/code_style-standard-brightgreen.svg" alt="Standard Code Style"  style="max-width:100%;">
+  </a>
+  <a href="https://snyk.io/test/github/middyjs/middy">
+    <img src="https://snyk.io/test/github/middyjs/middy/badge.svg" alt="Known Vulnerabilities" data-canonical-src="https://snyk.io/test/github/middyjs/middy" style="max-width:100%;">
+  </a>
+  <a href="https://github.com/middyjs/middy/actions/workflows/sast.yml">
+    <img src="https://github.com/middyjs/middy/actions/workflows/sast.yml/badge.svg
+?branch=main&event=push" alt="CodeQL" style="max-width:100%;">
+  </a>
+  <a href="https://bestpractices.coreinfrastructure.org/projects/5280">
+    <img src="https://bestpractices.coreinfrastructure.org/projects/5280/badge" alt="Core Infrastructure Initiative (CII) Best Practices"  style="max-width:100%;">
+  </a>
+  <br/>
+  <a href="https://gitter.im/middyjs/Lobby">
+    <img src="https://badges.gitter.im/gitterHQ/gitter.svg" alt="Chat on Gitter" style="max-width:100%;">
+  </a>
+  <a href="https://stackoverflow.com/questions/tagged/middy?sort=Newest&uqlId=35052">
+    <img src="https://img.shields.io/badge/StackOverflow-[middy]-yellow" alt="Ask questions on StackOverflow" style="max-width:100%;">
+  </a>
+</p>
+<p>You can read the documentation at: <a href="https://middy.js.org/docs/middlewares/parameters-secrets-extension">https://middy.js.org/docs/middlewares/parameters-secrets-extension</a></p>
+</div>
+
+## License
+
+Licensed under [MIT License](LICENSE). Copyright (c) 2017-2025 [Luciano Mammino](https://github.com/lmammino), [will Farrell](https://github.com/willfarrell), and the [Middy team](https://github.com/middyjs/middy/graphs/contributors).
+
+<a href="https://app.fossa.io/projects/git%2Bgithub.com%2Fmiddyjs%2Fmiddy?ref=badge_large">
+  <img src="https://app.fossa.io/api/projects/git%2Bgithub.com%2Fmiddyjs%2Fmiddy.svg?type=large" alt="FOSSA Status"  style="max-width:100%;">
+</a>

packages/parameters-secrets-extension/__benchmarks__/index.js

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+import { Bench } from 'tinybench'
+import middy from '../../core/index.js'
+import middleware from '../index.js'
+
+const bench = new Bench({ time: 1_000 })
+
+const context = {
+  getRemainingTimeInMillis: () => 30000
+}
+const setupHandler = (options = {}) => {
+  // TODO fetch mock
+  const baseHandler = () => {}
+  return middy(baseHandler).use(
+    middleware({
+      ...options
+    })
+  )
+}
+
+const coldHandler = setupHandler({ cacheExpiry: 0 })
+const warmHandler = setupHandler()
+
+const event = {}
+await bench
+  .add('without cache', async () => {
+    try {
+      await coldHandler(event, context)
+    } catch (e) {}
+  })
+  .add('with cache', async () => {
+    try {
+      await warmHandler(event, context)
+    } catch (e) {}
+  })
+
+  .run()
+
+console.table(bench.table())

packages/parameters-secrets-extension/__tests__/fuzz.js

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+import { test } from 'node:test'
+import fc from 'fast-check'
+import middy from '../../core/index.js'
+import middleware from '../index.js'
+
+const handler = middy((event) => event).use(
+  middleware({ type: 'systemsmanager' })
+)
+const context = {
+  getRemainingTimeInMillis: () => 1000
+}
+
+test('fuzz `event` w/ `object`', async () => {
+  fc.assert(
+    fc.asyncProperty(fc.object(), async (event) => {
+      await handler(event, context)
+    }),
+    {
+      numRuns: 100_000,
+      verbose: 2,
+
+      examples: []
+    }
+  )
+})