A decorator that fixes boolean input values

is-bool.ts

const VALUE_KEY = '__value_';

export function isBool (): PropertyDecorator {
    return (target: any, propertyKey: string) => {
        Object.defineProperty(target, propertyKey, {
            get: function () {
                return this[`${VALUE_KEY}${propertyKey}`];
            },
            set: function (value) {
                this[`${VALUE_KEY}${propertyKey}`] = value != null && `${value}` !== 'false';
            }
        });
    };
}