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title: Announcing TypeScript 7.0 | daily.dev
description: TypeScript 7.0 is officially released as a native port of the TypeScript compiler written in Go, delivering 8x–12x faster build times and significantly reduced...
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# Announcing TypeScript 7.0

**[Typescript](https://daily.dev/sources/ts)** · 21 min read · 123 upvotes · 10 comments

## Summary

TypeScript 7.0 is officially released as a native port of the TypeScript compiler written in Go, delivering 8x–12x faster build times and significantly reduced memory usage. Real-world benchmarks show the VS Code codebase going from 125.7s to 10.6s, and editor load times dropping from 17.5s to under 1.3s. The release introduces parallel type-checking via configurable --checkers and --builders flags, a rebuilt --watch mode using a Go port of Parcel's file watcher, and full LSP-based editor support. TypeScript 7.0 adopts TypeScript 6.0's stricter defaults (strict: true, module: esnext, etc.) and removes support for legacy options like target: es5, baseUrl, and AMD/UMD modules. A compatibility package @typescript/typescript6 allows side-by-side installation for tools still requiring the programmatic API. Embedded language frameworks (Vue, Svelte, Astro, Angular) cannot yet use TS7 due to the missing programmatic API, expected in TypeScript 7.1.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://devblogs.microsoft.com/typescript/announcing-typescript-7-0>

## Questions this post answers

### What breaking changes come with upgrading to TypeScript 7.0?

TypeScript 7.0 adopts TypeScript 6.0's deprecated flags as hard errors: target es5, downlevelIteration, moduleResolution node/node10/classic, module amd/umd/systemjs/none, and baseUrl are no longer supported. New defaults also apply, including strict true, module esnext, rootDir defaulting to ./, and types defaulting to an empty array, which may require explicit configuration changes in tsconfig.json.

_daily.dev helps teams track TypeScript upgrade breaking changes before they hit a build._

### How much faster is TypeScript 7 compared to TypeScript 6?

TypeScript 7, a native Go port of the compiler, delivers 8x to 12x faster full builds compared to TypeScript 6, with the VS Code codebase dropping from 125.7 seconds to 10.6 seconds by default, or 7.51 seconds with --checkers 8. Memory usage also drops, for example an 18% reduction on the VS Code build, alongside similar speedups in editor error detection.

_developers deciding when to migrate to TypeScript 7 can follow benchmark data like this on daily.dev._

### Can I use TypeScript 7 with Vue, Astro, Svelte, or Angular projects?

Not yet for editor tooling: TypeScript 7.0 does not expose a stable programmatic API, so tools like Volar that embed TypeScript into their own language services, including Vue, MDX, Astro, and Svelte, must keep using TypeScript 6.0 for editor support. Angular projects can use TypeScript 7 for fast CLI type-checking via tsc while still relying on TypeScript 6.0 in the editor.

_framework maintainers weighing a TypeScript 7 migration can track ecosystem compatibility updates on daily.dev._

## Community discussion

Top comments from developers on daily.dev.

**@andradei** · 15 upvotes

> one good thing coming out of ms.

**@pdfopsdev** · 9 upvotes

> The headline is the 10x, but the sleeper caveat is the compiler-as-a-library surface: anything that imports `typescript` to run custom AST transformers (ts-patch, ttypescript, some codegen/monorepo tooling) is built against the JS API, and the Go port ships a new one rather than the old programmatic API. The type _checking_ is identical; the transformer hooks aren't. Worth grepping your build for `transformers` before assuming 7.0 is a drop-in.

**@lewisla** · 8 upvotes

> Roll on version 7.1 so dev tooling sees the benefits. Awesome effort TS team.

**@rucaua** · 3 upvotes

> I’m not sure it makes sense without support from frameworks, but it looks very promising.

**@dustinscott** · 2 upvotes

> I have feelings about typescript not consuming it's own dogfood. Wish they'd just make node / javascript faster instead.

## Similar posts on daily.dev

- [Announcing TypeScript 7.0 RC](https://daily.dev/posts/announcing-typescript-7-0-rc-dx1ho4imo) · Typescript · 88 upvotes · 10 comments

---

Tags: [#performance](https://daily.dev/tags/performance), [#typescript](https://daily.dev/tags/typescript), [#golang](https://daily.dev/tags/golang), [#compiler](https://daily.dev/tags/compiler), [#lsp](https://daily.dev/tags/lsp)

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