# typescript

/tˈaɪpskɹɪpt/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/typescript
Updated: 2026-10-19

## Definition

a programming language from Microsoft that adds extra rules to JavaScript to catch mistakes early. You use it to build large websites and apps more safely.

For teachers: a statically typed superset of JavaScript developed by Microsoft that compiles to plain JavaScript, adding optional type annotations and tooling for large-scale application development.

## Examples

- She writes her new app in TypeScript.
- Our team uses TypeScript for the online shop because it catches small errors before the site goes live.
- Although plain JavaScript allows rapid prototyping, many large projects migrate to TypeScript to gain stricter checks, clearer documentation, and safer refactoring across thousands of files.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.