TypeScript 7 is 10x Faster and Here's Why
TypeScript 7 is officially here—and its new native compiler is up to 10x faster! But how did Microsoft make TypeScript so much faster, and why was the compiler ported from TypeScript/JavaScript to Go?
In this video, I explain the biggest TypeScript 7 update using simple code examples and easy-to-understand animations. You’ll learn how browsers handle TypeScript files, why TypeScript needs a compiler, how the older TypeScript compiler worked, and how the new Go-based compiler improves build speed, type-checking, editor performance, and developer productivity.
We’ll also compare the TypeScript 6 and TypeScript 7 compilation processes, understand why Microsoft selected Go instead of Rust, explore the breaking changes you may encounter, and decide whether you should upgrade your projects right now.
This video is useful for:
✅ JavaScript and TypeScript developers
✅ React, Next.js and Node.js developers
✅ Frontend and full-stack developers
✅ Beginners learning TypeScript
✅ Developers working on large projects and monorepos
✅ Anyone curious about the new Go-based TypeScript compiler
By the end of this video, you’ll clearly understand:
• Why developers use TypeScript instead of plain JavaScript
• How TypeScript code becomes browser-readable JavaScript
• Why TypeScript requires a compiler
• Problems with the older JavaScript-based compiler
• How Go made TypeScript 7 significantly faster
• How TypeScript 6 and TypeScript 7 differ
• Why Microsoft chose Go instead of Rust
• Whether TypeScript developers need to learn Go
• Important breaking changes before upgrading
• Whether TypeScript 7 is ready for your project
TypeScript 7 is one of the biggest updates in TypeScript’s history, so watch the complete video before upgrading your project.
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⌛TIMELINE⏳
00:00 TypeScript 7 Is Officially Here
00:30 Most Important TypeScript 7 Update
01:15 Why Use TypeScript Over JavaScript?
02:20 TypeScript Code Example
03:30 How the Browser Reads TypeScript Files
03:50 Why TypeScript Needs a Compiler
04:30 Understanding the tsconfig.json File
06:05 One Important Question
07:10 Problems With the Compiler Before TypeScript 7
08:20 How Microsoft Fixed It Using Go
10:02 TypeScript 6 vs TypeScript 7 Compiler
12:50 Why Microsoft Chose Go Instead of Rust
15:20 Do TypeScript Developers Need to Learn Go?
17:20 Try TypeScript 7 Yourself
17:30 TypeScript 7 Breaking Changes
18:10 Should You Upgrade to TypeScript 7?