const isPrimaryPointer = (event) => {
    if (event.pointerType === "mouse") {
        return typeof event.button !== "number" || event.button <= 0;
    }
    else {
        /**
         * isPrimary is true for all mice buttons, whereas every touch point
         * is regarded as its own input. So subsequent concurrent touch points
         * will be false.
         *
         * Specifically match against false here as incomplete versions of
         * PointerEvents in very old browser might have it set as undefined.
         */
        return event.isPrimary !== false;
    }
};

export { isPrimaryPointer };