Examining the JavaScript Proxy code snippet below:
const queue = new Proxy([], {
get: (target, property) => {
return target[property];
},
set: (target, property, value) => {
target[property] = value;
this._processQueue();
return true;
}
});
The main objective here is to establish a dynamic queue that automatically runs processing operations whenever an element is appended.
However, the issue arises when we require to call flushQueue after processing the elements in order to clear out the processed items. Essentially, emptying the Proxy array queue.
Can anyone provide guidance on accomplishing this task?
Attempts Made So Far...
// Changing queue to an empty array is not possible as it's defined as a constant and overriding the Proxy isn't allowed
queue = [];
// Setting the length of queue to 0 doesn't seem effective for clearing the array
queue.length = 0;
// Using splice clears the array but fails to reset the length...
queue.splice(0, queue.length);
Update
For a comprehensive example, refer to the complete code snippet presented below:
class Foo {
/**
* Constructor for Foo.
*
* @return void
*/
constructor() {
this.queue = new Proxy([], {
get: (target, property) => {
return target[property];
},
set: (target, property, value) => {
this._processQueue();
target[property] = value;
return true;
}
});
}
/**
* Append an event to the queue.
*
* @param {object} event
* @return void
*/
_addToQueue(event) {
this.queue.push(event);
}
/**
* Managing the event queue processing.
*
* @return void
*/
_processQueue() {
console.log('Processing the queue', this.queue, this.queue.length);
if (this.queue.length) {
this.queue.forEach((event, index) => {
console.log(event);
const method = this._resolveEvent(event.type);
const payload = typeof event.payload !== 'undefined' ? event.payload : {};
//this[method](payload);
});
this._flushQueue();
}
}
/**
* Emptying the event queue.
*
* @return void
*/
_flushQueue() {
this.queue.splice(0, this.queue.length);
}
}