export var SelectorType;
(function (SelectorType) {
    SelectorType["ENV"] = "env";
    SelectorType["CONFIG"] = "shared config entry";
})(SelectorType || (SelectorType = {}));
export const stringUnionSelector = (obj, key, union, type) => {
    if (!(key in obj))
        return undefined;
    const value = obj[key].toUpperCase();
    if (!Object.values(union).includes(value)) {
        throw new TypeError(`Cannot load ${type} '${key}'. Expected one of ${Object.values(union)}, got '${obj[key]}'.`);
    }
    return value;
};