3477e61aed
This adds an experimental package gojs which implements the host side of Wasm compiled by GOARCH=wasm GOOS=js go build -o X.wasm X.go This includes heavy disclaimers, in part inherited by Go's comments https://github.com/golang/go/blob/go1.19/src/syscall/js/js.go#L10-L11 Due to this many will still use TinyGo instead. That said, this is frequently asked for and has interesting features including reflection and HTTP client support. Signed-off-by: Adrian Cole <adrian@tetrate.io>
30 lines
737 B
Go
30 lines
737 B
Go
package gojs
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import (
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"context"
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"github.com/tetratelabs/wazero/api"
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"github.com/tetratelabs/wazero/internal/wasm"
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)
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// jsCrypto gets random values.
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//
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// It has only one invocation pattern:
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//
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// jsCrypto.Call("getRandomValues", a /* uint8Array */)
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//
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// This is defined as `Get("crypto")` in rand_js.go init
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var jsCrypto = newJsVal(refJsCrypto, "crypto").
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addFunction("getRandomValues", &getRandomValues{})
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type getRandomValues struct{}
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// invoke implements jsFn.invoke
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func (*getRandomValues) invoke(ctx context.Context, mod api.Module, args ...interface{}) (interface{}, error) {
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randSource := mod.(*wasm.CallContext).Sys.RandSource()
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r := args[0].(*byteArray)
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n, err := randSource.Read(r.slice)
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return uint32(n), err
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}
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