> Markdown version of [/videos/327-do-typescript-without-typescript?t=1771](https://www.wearedevelopers.com/videos/327-do-typescript-without-typescript?t=1771). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Do TypeScript without TypeScript

Want TypeScript's safety without the tedious transpilation step? Learn how to achieve robust type checking and fast iteration loops in plain JavaScript using JSDoc annotations.

- **Speakers:** Simone Sanfratello
- **Event:** JavaScript Congress
- **Published:** November 25, 2021
- **Duration:** 43:27
- **URL:** https://www.wearedevelopers.com/videos/327-do-typescript-without-typescript
- **Thumbnail URL:** https://customer-goifxnzhrq3d0d54.cloudflarestream.com/5101eb365bde99fd823a510d36946dc2/thumbnails/thumbnail.jpg?time=26485ms

## Access

Playback and chapters for this video are available with a Free account.

## Related Moments

- [The origins and early problems solved by TypeScript](https://www.wearedevelopers.com/videos/100061-typescript-features-that-changed-the-game) (from "TypeScript Features That Changed the Game")
  - **Thumbnail URL:** https://customer-goifxnzhrq3d0d54.cloudflarestream.com/3fc78ac635b1925434ff3297587532a7/thumbnails/thumbnail.jpg?time=125600ms
- [Evaluating benefits and trade-offs of using TypeScript](https://www.wearedevelopers.com/videos/646-4-steps-from-javascript-to-typescript) (from "4 Steps from JavaScript to TypeScript")
  - **Thumbnail URL:** https://customer-goifxnzhrq3d0d54.cloudflarestream.com/41b2c09f2dbdf307314f70f2bc414fe5/thumbnails/thumbnail.jpg?time=435985ms
- [Exploring the benefits of type safety and TypeScript migration](https://www.wearedevelopers.com/videos/1302-wearedevelopers-live-dishonest-charts-britcss-debugging-with-ai) (from "WeAreDevelopers LIVE - Dishonest Charts, BritCSS, Debugging with AI")
  - **Thumbnail URL:** https://customer-goifxnzhrq3d0d54.cloudflarestream.com/68c5fb24e01a2f47181b581308ccc0a4/thumbnails/thumbnail.jpg?time=250960ms
- [Deciding when to adopt or avoid TypeScript](https://www.wearedevelopers.com/videos/127-vuejs-and-typescript-working-together-like-peanut-butter-and-jelly) (from "Vuejs and TypeScript- Working Together like Peanut Butter and Jelly")
  - **Thumbnail URL:** https://customer-goifxnzhrq3d0d54.cloudflarestream.com/891940b8b966dc57edebbc32e3e34299/thumbnails/thumbnail.jpg?time=128625ms
- [The popularity and benefits of TypeScript](https://www.wearedevelopers.com/videos/1580-end-to-end-typescript-completing-the-modern-development-stack) (from "End-to-End TypeScript: Completing the Modern Development Stack")
  - **Thumbnail URL:** https://customer-goifxnzhrq3d0d54.cloudflarestream.com/84b640ab0e2f92c9a396efe40c4c958b/thumbnails/thumbnail.jpg?time=174015ms
- [Safely migrating legacy JavaScript codebases to strict TypeScript](https://www.wearedevelopers.com/videos/1306-wearedevelopers-live-whats-nuxt-and-next-for-app-development-20-years-ajax-and-more) (from "WeAreDevelopers LIVE - Whats Nuxt and Next for app development, 20 years AJAX and more")
  - **Thumbnail URL:** https://customer-goifxnzhrq3d0d54.cloudflarestream.com/171caeac5b69d609943e3d3f0954315b/thumbnails/thumbnail.jpg?time=252355ms

## Related Articles

- [Exploring TypeScript: Benefits for Large-Scale JavaScript Projects](https://www.wearedevelopers.com/magazine/554-exploring-typescript-benefits-for-large-scale-javascript-projects)
- [What is TypeScript?](https://www.wearedevelopers.com/magazine/47-what-is-typescript)
- [Dev Digest 159: AI Pipelines, 10x Faster TypeScript, How to Interview](https://www.wearedevelopers.com/magazine/563-dev-digest-159-ai-pipelines-10x-faster-typescript-how-to-interview)
- [Dev Digest 136 - No JS(on) of mine](https://www.wearedevelopers.com/magazine/482-dev-digest-136-no-js-on-of-mine)

## Related Jobs

- [Senior Web Software Architect, AI Experiences](https://www.wearedevelopers.com/jobs/ext/4523834-senior-web-software-architect-ai-experiences) at **TeamViewer Germany GmbH**
- [Senior Software Engineer, Angular (B2C Web Platform)](https://www.wearedevelopers.com/jobs/ext/3988925-senior-software-engineer-angular-b2c-web-platform) at **Bitpanda**
- [Principal Software Engineer, Copilot Code Review](https://www.wearedevelopers.com/jobs/ext/3926064-principal-software-engineer-copilot-code-review) at **GitHub**
- [Staff Product Engineer](https://www.wearedevelopers.com/jobs/48546-staff-product-engineer) at **Blacksmith Software**
- [Staff Developer Advocate, GitHub Security Lab](https://www.wearedevelopers.com/jobs/ext/3929243-staff-developer-advocate-github-security-lab) at **GitHub**
- [AI Software Engineer (Germany)](https://www.wearedevelopers.com/jobs/48317-ai-software-engineer-germany) at **Sunhat**