Major Companies Are Switching to TypeScript: The Main Trend of 2025

Major Companies Are Switching to TypeScript: The Main Trend of 2025

The TypeScript language, created by Microsoft in 2012, is experiencing a true renaissance in 2025. According to the latest research from Stack Overflow and GitHub, over 65% of large IT companies have either fully migrated their main projects to TypeScript or are in the active phase of migration. This is not just a fad — it is a response to the challenges of modern development, where reliability and scalability are becoming critical factors.

Why Are the Giants Choosing TypeScript?

The main reason is static typing, which allows catching errors at the code writing stage rather than during execution. For projects with millions of lines of code, this means a 30-40% reduction in bugs and a twofold decrease in debugging time. Here are the main companies that have already bet on TypeScript in 2025:

• Google — migrated Angular and part of its internal services to TypeScript back in 2023, and in 2025 announced the full migration of all new Google Cloud projects.
• Microsoft — the creator of the language uses it for VSCode, Teams, and Azure DevOps. In 2025, the company announced TypeScript 5.8 with support for heterogeneous types.
• Airbnb — after three years of experiments, completely rewrote its frontend in TypeScript, reducing the number of bugs in A/B tests by 45%.
• Slack — migrated its desktop and mobile applications, achieving a 50% improvement in build performance.
• Meta — uses TypeScript for internal tools and part of React Native, planning to migrate 80% of its codebase by the end of 2025.

Growth of the Ecosystem and Tools

The trend of 2025 is not only about large corporations. Medium and small startups are also actively choosing TypeScript. According to JetBrains, the share of developers using TypeScript as their primary language grew from 38% in 2023 to 61% in 2025. This is facilitated by the development of tools: improved linters, autocompletion in IDEs, and powerful type libraries. Additionally, TypeScript is increasingly penetrating the backend — through Deno, Bun, and Node.js 22 with native ESM support.

What Does This Mean for Developers?

Switching to TypeScript is becoming a mandatory requirement in job postings for Senior level and above. Knowledge of TypeScript is now equated with knowledge of JavaScript — it is not an option, but a standard. For those just starting out, learning TypeScript in 2025 is an investment in your career. In 2025, the average salary of a TypeScript developer in the US increased by 18% compared to 2024 and reached $145,000 per year. In Russia and the CIS, demand is also growing: the number of job postings requiring TypeScript has increased by 40% over the past year.

Forecasts for the Near Future

Analysts predict that by 2027, TypeScript will become the primary language for web development, overtaking plain JavaScript. Already, the share of new projects using TypeScript is 72% (according to npm). If you work with React, Vue, or Angular frameworks — TypeScript has long been the standard. And with the release of TypeScript 6.0 in 2026, static analysis support for all popular runtimes is expected.

The bottom line: TypeScript is not just another trend, but a fundamental shift in how we write code. Major companies are switching to it not for hype, but for a real improvement in code quality, reliability, and development speed. If you are not yet familiar