petkaantonov/bluebird

Health v2 · maintenance only

Adoption not part of the score

20490 stars · 2311 forks observed · 2026-08-28

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

Bluebird is a full-featured Promises/A+ compliant promise library for JavaScript with a focus on performance and rich utility methods like .map, .promisify, and cancellation. Its maintainer now recommends native promises for most use cases, reserving Bluebird for very old browsers, EoL Node.js, or debugging with warnings/monitoring.

Use cases

• add promise support to old browsers like IE8
• promisify callback-based Node.js APIs
• run concurrent async operations with concurrency limits using .map
• find unhandled promise rejections with warnings and monitoring
• support end-of-life Node.js versions without native promises

When to choose

• you must support very old browsers or EoL Node.js versions
• you want warnings/monitoring to track down async bugs in a legacy codebase
• you're maintaining an existing codebase already built on Bluebird

When to avoid

• starting a new project on modern Node.js or browsers - use native promises
• you only need basic utilities like .map, which native platforms now provide
• you want a library under active feature development

Facets

library · maturity maintenance

concurrency developer-tools developer-tools web-development browser cross-platform promises async promises-aplus flow-control javascript nodejs

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