In ECMA-262 spec, catch cannot be used as method name.

Some nonstandard helpers: spread, promisify, etc. Such as the bluebird-core, it will inevitably load Which means you can load the lib without helpers. Optional helpers: Whether the helpers can be imported separately or not,

Run npm run no - test-es6 -shim bluebird. Promises-es6-tests: If you want to test bluebird against promises-es6-tests, For more details: docs/debugHelperComparison.md.ġms async task: npm run no - benchmark, the smaller the better (total time / memory rss). Helpers: extra methods that help with your promise programming, such asĪsync flow control helpers, debug helpers. Unit test: promises-aplus-tests, promises-es6-tests, and even the core-js tests.Ĭoverage: statement coverage and branch coverage. You can reproduce it on your own machine with npm run no - benchmark. Only some of the famous ones were tested. There are tons of Promises/A+ implementations, you can see them here. These comparisons only reflect some limited truth, no one is better than all others on all aspects. Highly modularized extra helpers, no pollution to its pure ES6 implementationĭocs/changelog.md Compare to Other Promise Libs.Well commented source code with every Promises/A+ spec.Better CPU and memory performance than the native Promise.100% statement and branch test coverage.Supports 'uncaught rejection' and 'long stack trace', Comparison.One of the best for mobile, gzipped file is only 2.0KB.I write this lib to research one of my data structure ideas: docs/lazyTree.md. I am not an optimization freak, I try to keep the source code readable and maintainable. Yaku passed all the tests of promises-aplus-tests, promises-es6-tests, and even the core-js tests. It only implements the constructor and then. Without comments, it is only 80 lines of code (gzipped size is 0.5KB). If you want to learn how Promise works, read the minimum implementation yaku.aplus. Yaku is full compatible with ES6's native Promise, but much faster, and more error friendly.

Yaku download the new