alangpierce/sucrase

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

5870 stars · 155 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Sucrase is a super-fast JavaScript transpiler, forked from Babel's parser, that compiles non-standard syntax like JSX, TypeScript, and Flow instead of downleveling modern JS features. It targets recent browsers and Node.js runtimes, achieving roughly 20x faster builds than Babel for development workflows.

Use cases

• transpile JSX and TypeScript quickly during development
• replace Babel for faster dev builds when targeting modern runtimes
• run TypeScript files directly with node via sucrase/register
• integrate a fast transpiler into ts-node
• compile Flow-typed code to plain JavaScript
• speed up building large JavaScript codebases

When to choose

• you need fast development builds and can target modern browsers or Node.js
• your build bottleneck is Babel's transform speed
• you only need JSX, TypeScript, or Flow transforms rather than broad syntax downleveling
• you want a lightweight transpiler with a small install size

When to avoid

• you need to support legacy browsers like Internet Explorer
• you rely on Babel's extensive plugin ecosystem or custom transforms
• you need production builds with full syntax downleveling and polyfills
• you need highly extensible or configurable transform pipelines

Facets

library · maturity active

compiler build-tool developer-tools web-development frontend developer-tools programming-languages cross-platform transpiler jsx typescript flow es-modules babel-alternative dev-builds nodejs javascript

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