@babel/preset-typescript

What is @babel/preset-typescript?

The @babel/preset-typescript package is a Babel preset for TypeScript, which allows Babel to parse and transform TypeScript code into JavaScript. This enables developers to use TypeScript's static typing features while leveraging Babel's ability to compile modern JavaScript to be compatible with older browsers or environments.

What are @babel/preset-typescript's main functionalities?

TypeScript Compilation

Compiles TypeScript code to JavaScript by stripping out type annotations and handling TypeScript-specific syntax.

const x: number = 10;

Support for TypeScript Features

Supports various TypeScript features like enums, interfaces, and namespaces, converting them to equivalent JavaScript code.

enum Color { Red, Green, Blue }; let c: Color = Color.Green;

Integration with Babel Toolchain

Easily integrates with the Babel toolchain, allowing TypeScript files to be included in Babel's build process alongside other JavaScript files.

module.exports = { presets: ['@babel/preset-typescript'] };

Other packages similar to @babel/preset-typescript

ts-loader

ts-loader is a TypeScript loader for webpack. It compiles TypeScript to JavaScript before bundling. It differs from @babel/preset-typescript in that it is specifically designed for use with webpack and uses the TypeScript compiler (tsc) directly rather than Babel.

awesome-typescript-loader

Similar to ts-loader, awesome-typescript-loader is another loader for webpack that compiles TypeScript to JavaScript. It offers features like Babel integration and type checking in a separate process. It is an alternative to ts-loader and provides similar functionality to @babel/preset-typescript but with a focus on webpack integration.

typescript

The official TypeScript npm package provides the TypeScript compiler (tsc) which can be used to compile TypeScript files directly without Babel. It is more comprehensive in terms of TypeScript feature support compared to @babel/preset-typescript, which is focused on integrating TypeScript with Babel's ecosystem.

README

@babel/preset-typescript

Babel preset for TypeScript.

See our website @babel/preset-typescript for more information or the issues associated with this package.

Install

Using npm:

npm install --save-dev @babel/preset-typescript

or using yarn:

yarn add @babel/preset-typescript --dev

Changelog

v7.26.0 (2024-10-25)

:rocket: New Feature

• babel-core, babel-generator, babel-parser, babel-plugin-syntax-import-assertions, babel-plugin-syntax-import-attributes, babel-preset-env, babel-standalone, babel-types
  • #16850 Enable import attributes parsing by default (@nicolo-ribaudo)
• babel-core
  • #16862 feat: support async plugin's pre/post (@timofei-iatsenko)
• babel-compat-data, babel-plugin-proposal-regexp-modifiers, babel-plugin-transform-regexp-modifiers, babel-preset-env, babel-standalone
  • #16692 Add transform-regexp-modifiers to preset-env (@JLHwung)
• babel-parser
  • #16849 feat: add startIndex parser option (@DylanPiercey)
• babel-generator, babel-parser, babel-plugin-syntax-flow
  • #16841 Always enable parsing of Flow enums (@nicolo-ribaudo)
• babel-helpers, babel-preset-typescript, babel-runtime-corejs3
  • #16794 Support import() in rewriteImportExtensions (@liuxingbaoyu)
• babel-generator, babel-parser
  • #16708 Add experimental format-preserving mode to @babel/generator (@nicolo-ribaudo)

:bug: Bug Fix

• babel-core
  • #16928 Workaround Node.js bug for parallel loading of TLA modules (@nicolo-ribaudo)
  • #16926 Fix loading of modules with TLA in Node.js 23 (@nicolo-ribaudo)

:nail_care: Polish

• babel-plugin-proposal-json-modules, babel-plugin-transform-json-modules, babel-standalone
  • #16924 Rename proposal-json-modules to transform-json-modules (@nicolo-ribaudo)

:house: Internal

• babel-code-frame, babel-highlight
  • #16896 Inline @babel/highlight in @babel/code-frame (@nicolo-ribaudo)
• babel-generator, babel-parser, babel-types
  • #16732 Add kind to TSModuleDeclaration (@liuxingbaoyu)

:running_woman: Performance

• babel-helper-module-transforms, babel-plugin-transform-modules-commonjs
  • #16882 perf: Improve module transforms (@liuxingbaoyu)