what events can i listen to when using node-cache addeventlistener in javascript

The node-cache package in Node.js does not provide a built-in addEventListener function. However, you can achieve similar functionality by defining custom events and using the EventEmitter module that comes with Node.js.

To listen to events related to a node-cache instance using the EventEmitter module, you can follow these steps:

1. Install the required modules:

npm install node-cache events
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2. Import the necessary modules in your JavaScript file:

index.tsx
const NodeCache = require("node-cache");
const EventEmitter = require("events");
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3. Create a new EventEmitter instance and set it as the event handler for the node-cache object:

index.tsx
const cache = new NodeCache();
const eventEmitter = new EventEmitter();

cache.eventHandler = eventEmitter;
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4. Listen to specific events by registering event listeners with the EventEmitter instance:

index.tsx
eventEmitter.on("set", (key, value) => {
    console.log(`The value '${value}' was set with key '${key}'.`);
});

eventEmitter.on("del", (key, deleted) => {
    console.log(`The value with key '${key}' was deleted.`);
});
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Now, whenever a set or del operation is performed on the node-cache object, the corresponding event listener will be triggered and the specified actions will be executed.

Please note that the node-cache package also provides some built-in methods to directly handle events:

• cache.on(eventName, callback): Attaches an event listener for a specific event.
• cache.emit(eventName, ...args): Emits an event with the provided name and arguments.

However, these built-in methods are recommended for internal usage, and using EventEmitter for handling events provides more flexibility.