Guide on effectively leveraging a single variable to both store the outcome of setInterval() and send it as an argument to clearInterval()

I'm trying to work with the same variable to handle the return value of setInterval() and then pass it as an argument to clearInterval() in TypeScript. The issue I'm facing is that setInterval() gives back a NodeJS.Timer while clearInterval() expects a number.

This is how I want my code to be structured:

itemCooldownTimer: NodeJS.Timer | undefined;

this.itemCooldownTimer = setInterval(this.tickCooldown, 1000);

This is how I intend to clear the interval:

clearInterval(this.itemCooldownTimer);
typescriptsetintervalclearinterval

Answer №1

There is a difference in the return values of setInterval in the Browser and Node.js environments. Which platform are you currently working on?

In the browser, the return type is number. If your IDE displays something different, consider using window.setInterval instead.

itemCooldownInterval: number | undefined;

// this will work
this.itemCooldownInterval = window.setInterval(this.tickCooldown, 1000);

Regardless, you can utilize ReturnType to deduce the appropriate type:

itemCooldownInterval: ReturnType<typeof setInterval> | undefined;

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