parallel-universe/waitFor.js

The set of async flow control structures and promise utils.

'use strict';

var repeat = require('./repeat.js');

/**
 * Polls the callback until it returns a truthy value or rejects.
 *
 * @param cb The callback that is periodically invoked.
 * @param ms The number of milliseconds between the settlement of the last promise returned by the callback and the next
 * invocation. Or a callback that receives the latest value and returns the delay. If omitted then delay is 0.
 * @template T The value returned by the callback.
 * @returns The truthy value.
 */
function waitFor(cb, ms) {
    return repeat.repeat(cb, ms, Boolean);
}

exports.waitFor = waitFor;