Decision Workspace
promises vs promisery vs mrwei
Side-by-side comparison of Rust crates
34
promises
growingv0.2.0
Effective, simple, lightweight Javascript promises in Rust
57
promisery
growingv2.0.1
A JavaScript-inspired, ergonomic, and composable Promise type for Rust, supporting background work, chaining, and error handling with Result.
37
mrwei
growingv0.1.0
A simple library that implements the common promise primitive for rust based on std future.
Core Metrics
| promises | promisery | mrwei | |
|---|---|---|---|
| Health Score | 34 | 57 | 37 |
| Total Downloads | 4.5K | 2.1K | 1.7K |
| 30d Downloads | 5 | 25 | 3 |
| Dependents | 0 | 1 | 0 |
| Releases | 2 | 5 | 1 |
| Last Updated | 3651d ago | 266d ago | 1906d ago |
| Age | 10y | 8m | 5y 2m |
Health Breakdown
promises
Maintenance
3
Quality
16
Community
3
Popularity
4
Documentation
8
promisery
Maintenance
15
Quality
18
Community
7
Popularity
4
Documentation
13
mrwei
Maintenance
1
Quality
15
Community
5
Popularity
4
Documentation
12
Technical Details
| promises | promisery | mrwei | |
|---|---|---|---|
| Version | 0.2.0 | 2.0.1 | 0.1.0 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT | MIT OR Apache-2.0 | MIT |
| Dependencies | 0 | 2 | 1 |
| Crate Size | 5KB | 9KB | 7KB |
| Features | 0 | 0 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | — | 2021 | 2018 |
| MSRV | — | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •promisery leads with a health score of 57/100, but none of the options score above 80.
- •promises has the most downloads (4.5K), suggesting wider adoption.
- •⚠ promises, mrwei have not been updated in over a year.
- •promises, mrwei are pre-1.0 — API may change.