// +build js

package testing

import "runtime"

// The upstream callerName and frameSkip rely on runtime.Callers,
// and panic if there are zero callers found. However, runtime.Callers
// is not implemented for GopherJS at this time, so we can't use
// that implementation. Use these stubs instead.
func callerName(skip int) string {
	// Upstream callerName requires a functional runtime.Callers.
	// TODO: Implement if possible.
	return "<unknown>"
}

func (*common) frameSkip(skip int) runtime.Frame {
	_, file, line, ok := runtime.Caller(skip)
	if !ok {
		return runtime.Frame{}
	}
	return runtime.Frame{
		File: file,
		Line: line,
	}
}