Typed throttle in TypeScript

Throttle with the wrapped function's signature preserved.

function throttle<A extends unknown[]>(
  fn: (...args: A) => void,
  limit: number,
): (...args: A) => void {
  let ready = true;
  return (...args: A) => {
    if (!ready) return;
    ready = false;
    fn(...args);
    setTimeout(() => {
      ready = true;
    }, limit);
  };
}

Keywords and builtins used here

• A
• extends
• function
• if
• let
• number
• return

The run, in numbers

Lines

14

Characters to type

246

Tokens

82

Three-star pace

105 tpm

At the three-star pace of 105 tokens a minute, this run takes about 47 seconds.

Type this snippet

Step 3 of 5 in Timing & memory, step 16 of 19 in Classes & patterns.

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