@flywine93/ngx-autounsubscrb/fesm2015/flywine93-ngx-autounsubscrb.js

Angular 9+ automatically unsubscribe to the RXJS decorator, It is lightweight and practical!!

const IvyKey = {
    dir: 'ɵdir',
    cmp: 'ɵcmp',
    prov: 'ɵprov' // Serivce
};

// Determines whether the target is a function
const isFun = (target) => typeof target === 'function';

const defaultOptions = {
    blackList: [],
    checkArrVar: false
};
/**
 * unsubscribe variable
 * @param member public and private member or temp variable
 */
function unsubscribe(variable, options) {
    if (variable) {
        if (isFun(variable.unsubscribe)) {
            variable.unsubscribe();
            return;
        }
        // if variable is array type，will check and unsubscribe
        if (options.checkArrVar && Array.isArray(variable)) {
            for (const ele of variable) {
                if (ele && isFun(ele.unsubscribe)) {
                    ele.unsubscribe();
                }
            }
        }
    }
}
/**
 * unsubscribe member variable and temp variable when destroy.
 * @param options options
 * 1.blackList---Variables in blacklist are not cancelled
 */
function AutoUnsubscrb(options = {}) {
    return function (target) {
        const original = target.prototype['ngOnDestroy']; // cache original ngOnDestroy function
        if (!isFun(original)) {
            throw new Error(`${target.name} is using @AutoUnsubscrb but does not implement OnDestroy`);
        }
        options = Object.assign(defaultOptions, options);
        target.prototype.autoAddList = []; // Used to cache objects added through MAutoAdd
        target.prototype.ngOnDestroy = function ngOnDestroy() {
            if (isFun(original)) {
                original.apply(this, arguments); // Preserve the original function
            }
            // unsubscribe public and private member variable
            for (const propName in this) {
                if (options.blackList.includes(propName)) {
                    continue;
                }
                unsubscribe(this[propName], options);
            }
            // unsubscribe temp variable
            for (const sub of this.autoAddList) {
                unsubscribe(sub, options);
            }
        };
        // Ivy
        if (target.prototype.constructor[IvyKey.cmp]) {
            target.prototype.constructor[IvyKey.cmp].onDestroy = target.prototype.ngOnDestroy;
        }
        else if (target.prototype.constructor[IvyKey.dir]) {
            target.prototype.constructor[IvyKey.dir].onDestroy = target.prototype.ngOnDestroy;
        }
    };
}
/**
 * Manually add temporary variables and unsubscribe when destroy.
 * @param target Class this keyword
 * @param subscrb Temp variable
 */
function MAutoAdd(target, subscrb) {
    if (target && target.autoAddList) {
        target.autoAddList.push(subscrb);
    }
}

/*
 * Public API Surface of ngx-autounsubscrb
 */

/**
 * Generated bundle index. Do not edit.
 */

export { AutoUnsubscrb, MAutoAdd, unsubscribe };
//# sourceMappingURL=flywine93-ngx-autounsubscrb.js.map