@exadel/esl/modules/esl-utils/decorators/safe.js

Exadel Smart Library (ESL) is the lightweight custom elements library that provide a set of super-flexible components

import { resolveProperty } from '../misc/functions';
/** Implementation */
export function safe(fallback) {
    return function (target, propertyKey, descriptor) {
        const originalMethod = descriptor.value || descriptor.get;
        if (typeof originalMethod !== 'function')
            throw new Error('@safe can only be applied to methods or getters');
        const isGetter = !!descriptor.get && !descriptor.value;
        const wrappedMethod = function (...args) {
            try {
                return originalMethod.apply(this, args);
            }
            catch (error) {
                if (typeof this.$$error === 'function')
                    this.$$error(error, propertyKey);
                return resolveProperty(fallback, this);
            }
        };
        if (isGetter) {
            descriptor.get = wrappedMethod;
        }
        else {
            descriptor.value = wrappedMethod;
        }
        return descriptor;
    };
}