This compares the cost of simple function calls going from JavaScript to native code and back in:
- Bun v0.0.79
- napi.rs (Node v17.7.1)
- Deno v1.21.1
To set up:
bun setupTo run the benchmark:
bun benchadd 100 to a number:
| Overhead | Using | Version | Platform |
|---|---|---|---|
| 7ns | bun:ffi | 0.0.79 | macOS (aarch64) |
| 18ns | napi.rs | 17.7.1 | macOS (aarch64) |
| 580ns | Deno | 1.21.1 | macOS (aarch64) |
function that does nothing:
| Overhead | Using | Version | Platform |
|---|---|---|---|
| 3ns | bun:ffi | 0.0.79 | macOS (aarch64) |
| 15ns | napi.rs | 17.7.1 | macOS (aarch64) |
| 431ns | Deno | 1.21.1 | macOS (aarch64) |
The native functions called in Deno & Bun are the same. The function called with napi.rs is based on napi's official package-template in https://github.com/Jarred-Sumner/napi-plus100