Sucrase

Spec sheet

Purpose

Sucrase is a fast alternative to Babel for development builds targeting modern JavaScript runtimes.Read 9 Oct 2026 · github.com

Integrations

The README lists Webpack, Gulp, Jest, Rollup, and Broccoli integrations, plus a ts-node plugin.Read 9 Oct 2026 · github.com

License

Sucrase is MIT-licensed.Read 9 Oct 2026 · github.com

JavaScript syntax

It transforms optional chaining, nullish coalescing, class fields, numeric separators, and optional catch binding by default.Read 9 Oct 2026 · github.com

Language transforms

It transforms JSX, TypeScript, and Flow, and also supports import, React hot loader, and Jest transforms.Read 9 Oct 2026 · github.com

Plugins

Sucrase is not pluginizable; its transforms must be explicitly implemented to cooperate with one another.Read 9 Oct 2026 · github.com

Production use

The project says Sucrase is mostly beneficial in development and that Babel or tsc may be more suitable for production builds.Read 9 Oct 2026 · github.com

Runtime target

Sucrase does not compile code for old browsers such as Internet Explorer, and unsupported syntax must be handled by the target runtime or other tooling.Read 9 Oct 2026 · github.com

Security and compliance

The project page identifies an MIT license and does not state security certifications or compliance claims.Read 9 Oct 2026 · github.com

Type checking

Sucrase removes TypeScript and Flow annotations but does not check types, so the project recommends using a separate typechecker or linter.Read 9 Oct 2026 · github.com

Usage

Sucrase can be installed as an npm or Yarn development dependency and used through a CLI, Node require hook, ts-node plugin, or JavaScript API.Read 9 Oct 2026 · github.com

Plans and prices

Every Sucrase plan and price →

Where Specifiction places it

• JavaScript Build Tools#21 of 277.3
• Code Transpilers#26 of 287.1