package module

import (
	"context"
	"fmt"

	"github.com/dop251/goja"
)

func assertType[T any](v goja.Value, rt *goja.Runtime) T {
	if c, ok := v.Export().(T); ok {
		return c
	}

	panic(rt.NewTypeError(fmt.Sprintf("expected value to be a '%T', got '%T'", new(T), v.Export())))
}

func assertContext(v goja.Value, r *goja.Runtime) context.Context {
	return assertType[context.Context](v, r)
}

func assertObject(v goja.Value, r *goja.Runtime) map[string]any {
	return assertType[map[string]any](v, r)
}

func assertString(v goja.Value, r *goja.Runtime) string {
	return assertType[string](v, r)
}