Function createYielder

src/resolution/cooperative-yield.ts:42–53

(budgetMs: number = DEFAULT_YIELD_BUDGET_MS)

export const DEFAULT_YIELD_BUDGET_MS = 250;

export function createYielder(budgetMs: number = DEFAULT_YIELD_BUDGET_MS): MaybeYield {
  let last = Date.now();
  return function maybeYield(): Promise<void> | undefined {
    if (Date.now() - last < budgetMs) return undefined;
    return new Promise<void>((resolve) =>
      setImmediate(() => {
        last = Date.now();
        resolve();
      })
    );
  };
}