MustConvertType converts an instance of type A to type B using JSON marshal and unmarshal.

mustconverttype.go

// MustConvertType converts an instance of type A to type B using JSON marshal and unmarshal.
// Both types A and B should have the same structure and JSON tags.
// In case of error, it panics.
func MustConvertType[A any, B any](input A) B {
	var output B

	// Marshal the input type A to JSON
	data, err := json.Marshal(input)
	if err != nil {
		panic(fmt.Errorf("failed to marshal input: %w", err))
	}

	// Unmarshal the JSON data to type B
	err = json.Unmarshal(data, &output)
	if err != nil {
		panic(fmt.Errorf("failed to unmarshal to output: %w", err))
	}

	return output
}