The setTimeout function in TypeScript is used to delay the execution of a function by a specified number of milliseconds.

Here are three solutions to write the setTimeout type in TypeScript. Replace <ms> with the number of milliseconds, you want to delay the execution.

Solution #1

let timer: NodeJS.Timer;
timer = setTimeout(() => { }, <ms>)
...
clearTimeout(timer);

Solution #2

type TimerType = ReturnType<typeof setInterval>;
let timer: TimerType;
timer = setTimeout(() => { }, <ms>)
...
clearTimeout(timer);

Solution #3

let timer: ReturnType<typeof setInterval>;
timer = setTimeout(() => { }, <ms>)
...
clearTimeout(timer);