@outofaxis/react-textfit/lib/utils/series.js

React component to fit headlines and paragraphs into any element

"use strict";

Object.defineProperty(exports, "__esModule", {
    value: true
});
exports.default = series;
/**
 * Run the functions in the tasks array in series, each one running once the previous function has completed.
 * If any functions in the series pass an error to its callback, no more functions are run,
 * and callback is immediately called with the value of the error. Otherwise, callback receives an array of results
 * when tasks have completed.
 * Taken from https://github.com/feross/run-series
 *
 * @params {Array} tasks An array containing functions to run, each function is passed a callback(err, result) which it must call on completion with an error err (which can be null) and an optional result value.
 * @params {Function} callback(err, results) - An optional callback to run once all the functions have completed. This function gets a results array containing all the result arguments passed to the task callbacks.
 */
function series(tasks, cb) {
    var results = [];
    var current = 0;
    var isSync = true;

    function done(err) {
        function end() {
            if (cb) cb(err, results);
        }
        if (isSync) setTimeout(end, 0);else end();
    }

    function each(err, result) {
        results.push(result);
        if (++current >= tasks.length || err) done(err);else tasks[current](each);
    }

    if (tasks.length > 0) tasks[0](each);else done(null);

    isSync = false;
}