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2 changed files with 0 additions and 77 deletions

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@ -1,72 +0,0 @@
# go-promises
Return promises from Go WASM.
## Usage
Write some go code, like this.
```go
import (
"syscall/js"
promises "codeberg.org/danjones000/go-promises"
)
func Add(a, b int) int {
return a + b
}
func AddWrapper() value.JSWrapper {
return func(this js.Value, args []js.Value) (any, error) {
if len(args) < 2 {
return nil, errors.New("add called with too few arguments")
}
a := args[0]
b := args[1]
if a.Type() != js.TypeNumber {
return nil, fmt.Errorf("First argument must be a number. %s given", a.Type())
}
if b.Type() != js.TypeNumber {
return nil, fmt.Errorf("secong argument must be a number. %s given", b.Type())
}
return Add(a.Int(), b.Int()), nil
}
}
func main() {
js.Global().Set("add", promises.PromisifyGoFunc(AddWrapper()))
<-make(chan struct{})
}
```
Next, compile this code:
```shell
GOOS=js GOARCH=wasm go build -o ./app.wasm ./
```
Copy the `app.wasm` file, as well as the `wasm_exec.js` from your go installation, into wherever you have your web files located.
```shell
cp app.wasm "$(go env GOROOT)"/misc/wasm/wasm_exec.js path/to/web/
```
Finally, you'll need some frontend code like this:
```javascript
const go = new Go();
WebAssembly.instantiateStreaming(fetch("app.wasm"), go.importObject).then((result) => {
go.run(result.instance);
});
```
Now, the "add" function is available anywhere in your javascript.
## Roadmap
- [ ] Argument validation, so you can write less code in your wrapper function.
- [ ] An easy method for attaching functions to other objects, so they don't have to be in the global scope

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@ -3,7 +3,6 @@ package main
import (
"errors"
"fmt"
"strings"
"syscall/js"
promises "codeberg.org/danjones000/go-promises"
@ -47,9 +46,5 @@ func main() {
return internal.GetUser(name.String(), age.Int()), nil
}))
js.Global().Get("String").Get("prototype").Set("toTitleCase", js.FuncOf(func(this js.Value, _ []js.Value) any {
return strings.Title(this.String())
}))
<-make(chan struct{})
}