TypeScript reached 2,636,006 monthly contributors on GitHub in August 2025, passing Python for the first time in the platform’s history, based on the Octoverse 2025 report. This post covers the contributor data behind that crossover, plus survey results, npm coverage, enterprise usage, and the AI numbers pushing the curve.
TypeScript Adoption Growth: Key Facts
- TypeScript added over 1 million new GitHub contributors in twelve months, a 66.6% jump.
- 40% of developers now write exclusively in TypeScript, up from 28% in 2022, per State of JS.
- 95% of the top 100 npm packages ship TypeScript support.
- 78% of enterprise teams reported TypeScript as their primary language in 2025.
- 94% of LLM-generated compilation errors are type-check failures, the exact class TypeScript catches.
The short version of TypeScript adoption growth: GitHub’s contributor count, survey preference, npm coverage, and enterprise usage all moved the same direction between 2024 and 2026, and AI-assisted coding is the common driver behind the acceleration.
How Many Developers Use TypeScript on GitHub?
GitHub counts distinct monthly contributors, which measures people writing code rather than survey opinions or install totals. TypeScript ended August 2025 at 2,636,006 contributors, about 42,000 ahead of Python.
All three top languages grew. TypeScript grew faster, at 66.6% year over year against 48.78% for Python and 25% for JavaScript, according to the Octoverse 2025 report.
| Language | Monthly contributors (Aug 2025) | New contributors (YoY) | YoY growth |
|---|---|---|---|
| TypeScript | 2,636,006 | ~1,050,000 | 66.6% |
| Python | ~2,594,000 | 850,579 | 48.78% |
| JavaScript | ~2,150,000 | ~427,000 | 25% |
Source: GitHub Octoverse 2025
This is the first time a typed superset has passed its parent language in GitHub’s rankings. The base is large enough that the growth reflects broad behavior, not a handful of viral repositories.
TypeScript Adoption Growth in Developer Surveys
Contributor counts show activity. Survey data shows preference, and exclusive TypeScript use has climbed 12 percentage points since 2022.
| Metric | 2022 | 2024 | 2025 |
|---|---|---|---|
| Write exclusively in TypeScript | 28% | 34% | 40% |
| Write exclusively in plain JavaScript | — | — | 6% |
| TypeScript admired rating | — | — | 84.1% |
Source: State of JS; Stack Overflow Developer Survey 2025
Just 6% of respondents now write only plain JavaScript. TypeScript holds an 84.1% admired score among developers with hands-on experience, per Stack Overflow.
Developers moving between runtimes tend to standardize their toolchains first, and the same habit shows up in cross-stack workflows like the ones covered in this Python version update walkthrough. Typed toolchains are now the expected baseline on both sides.
TypeScript Adoption Growth Across the npm Ecosystem
The dependency layer confirms the shift. The typescript package pulls roughly 50 million weekly npm downloads, based on PkgPulse data, and @types/react alone draws about 105 million per week according to Socket.dev.
| Ecosystem metric | 2026 figure |
|---|---|
| typescript package weekly downloads | ~50M |
| @types/react weekly downloads | ~105M |
| Top 100 npm packages with TypeScript support | 95% |
| Top 1,000 npm packages with TypeScript support | 89% |
| All npm packages with any TypeScript support | ~40% |
Source: PkgPulse; Socket.dev
Coverage at the top of the registry is near-total: 95% of the top 100 and 89% of the top 1,000 packages either ship types or have @types support. State management and validation libraries sit at 100% coverage.
The long tail lags at roughly 40%, splitting the registry between a typed professional core and older untyped utilities. Core tooling consolidating long before the tail catches up is a familiar pattern in developer infrastructure, visible in data like these command usage frequency statistics.
TypeScript Adoption Growth in Enterprise Codebases
By 2025, 78% of enterprise teams reported TypeScript as their primary language, per Java Code Geeks. Most of that work is invisible in public data.
81.5% of all GitHub contributions in 2025 happened in private repositories, and private repos grew 33% year over year against 19% for public ones, based on Octoverse 2025.
| Enterprise metric | Value | Baseline |
|---|---|---|
| Enterprise teams with TypeScript as primary language | 78% (2025) | — |
| Share of GitHub contributions in private repos | 81.5% (2025) | — |
| Private repository growth (YoY) | 33% | 19% (public) |
Source: Java Code Geeks; GitHub Octoverse 2025
TypeScript is over-represented in private codebases, so public numbers likely undercount its real penetration. Where tooling standardizes, pay follows, a pattern documented in the Linux administrator salary statistics for adjacent infrastructure roles.
Hiring data backs the same read. Demand concentration around a standard stack shows up in IT job market demand figures across the wider industry.
What Is Driving TypeScript Adoption Growth? The AI Factor
GitHub ties the 2025 crossover directly to AI-assisted coding. A 2025 academic study found 94% of compilation errors generated by large language models were type-check failures, the error class TypeScript catches before code runs.
| AI-related metric | Value |
|---|---|
| LLM-generated compilation errors that are type-check failures | 94% |
| New GitHub developers using Copilot in their first week | ~80% |
| Public repositories importing an LLM SDK | 1.1M+ (up 178% YoY) |
Source: GitHub Octoverse 2025
Nearly 80% of new GitHub developers use Copilot in their first week. More than 1.1 million public repositories now import an LLM SDK, a 178% jump in one year.
Framework defaults compound the effect: Next.js, Nuxt, and SvelteKit all scaffold TypeScript out of the box. Editor choice reinforces it too, since VS Code holds 75.9% of the developer market per the IDE usage statistics for 2026, and its TypeScript integration ships by default.
Developers building typed environments often start from an IDE base such as the setup in this PyCharm download guide before adding Node and the compiler.
TypeScript vs Python: Where Each Language Stands in 2026
The two languages are not competing for the same territory. Python still drives roughly half of all new AI repositories, holding the model and data-science layer, per Octoverse 2025.
TypeScript owns the application and API layer built on top. On the metric that counts working developers rather than downloads, TypeScript now sits first.
FAQs
How many developers use TypeScript in 2026?
TypeScript recorded 2,636,006 monthly active contributors on GitHub as of August 2025, the highest of any language, and 40% of surveyed developers now write exclusively in TypeScript.
Did TypeScript overtake Python on GitHub?
Yes. In August 2025, TypeScript passed Python by roughly 42,000 monthly contributors, the first time it led GitHub’s rankings, according to the Octoverse 2025 report.
How fast is TypeScript growing?
TypeScript grew 66.6% year over year, adding about 1.05 million new GitHub contributors between August 2024 and August 2025. Python grew 48.78% and JavaScript 25% in the same period.
Why is AI driving TypeScript adoption?
94% of LLM-generated compilation errors are type-check failures. Static types catch that error class before code runs, making TypeScript the safer default for AI-generated output.
What share of npm packages support TypeScript?
95% of the top 100 npm packages and 89% of the top 1,000 ship types or have @types support. Across the entire registry, coverage sits near 40%.
Sources
https://www.infoworld.com/article/4080454/typescript-rises-to-the-top-on-github.html
https://www.javacodegeeks.com/2026/03/typescript-became-the-1-language-on-github-in-2025.html
https://www.infoq.com/news/2026/03/ai-reshapes-language-choice/
