jobiqo-cl/lib/node_modules/framesync/dist/framesync.es.js

[](https://circleci.com/gh/jobiqo/jobiqo-cl)

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var heyListen_es = require('../../hey-listen/dist/hey-listen.es.js');

var prevTime = 0;
var onNextFrame = typeof window !== 'undefined' && window.requestAnimationFrame !== undefined
    ? function (callback) { return window.requestAnimationFrame(callback); }
    : function (callback) {
        var timestamp = Date.now();
        var timeToCall = Math.max(0, 16.7 - (timestamp - prevTime));
        prevTime = timestamp + timeToCall;
        setTimeout(function () { return callback(prevTime); }, timeToCall);
    };

var createStep = (function (setRunNextFrame) {
    var processToRun = [];
    var processToRunNextFrame = [];
    var numThisFrame = 0;
    var isProcessing = false;
    var i = 0;
    var cancelled = new WeakSet();
    var toKeepAlive = new WeakSet();
    var renderStep = {
        cancel: function (process) {
            var indexOfCallback = processToRunNextFrame.indexOf(process);
            cancelled.add(process);
            if (indexOfCallback !== -1) {
                processToRunNextFrame.splice(indexOfCallback, 1);
            }
        },
        process: function (frame) {
            var _a;
            isProcessing = true;
            _a = [
                processToRunNextFrame,
                processToRun
            ], processToRun = _a[0], processToRunNextFrame = _a[1];
            processToRunNextFrame.length = 0;
            numThisFrame = processToRun.length;
            if (numThisFrame) {
                var process_1;
                for (i = 0; i < numThisFrame; i++) {
                    process_1 = processToRun[i];
                    process_1(frame);
                    if (toKeepAlive.has(process_1) === true && !cancelled.has(process_1)) {
                        renderStep.schedule(process_1);
                        setRunNextFrame(true);
                    }
                }
            }
            isProcessing = false;
        },
        schedule: function (process, keepAlive, immediate) {
            if (keepAlive === void 0) { keepAlive = false; }
            if (immediate === void 0) { immediate = false; }
            heyListen_es.invariant(typeof process === 'function', 'Argument must be a function');
            var addToCurrentBuffer = immediate && isProcessing;
            var buffer = addToCurrentBuffer ? processToRun : processToRunNextFrame;
            cancelled.delete(process);
            if (keepAlive)
                toKeepAlive.add(process);
            if (buffer.indexOf(process) === -1) {
                buffer.push(process);
                if (addToCurrentBuffer)
                    numThisFrame = processToRun.length;
            }
        }
    };
    return renderStep;
});

var StepId;
(function (StepId) {
    StepId["Read"] = "read";
    StepId["Update"] = "update";
    StepId["Render"] = "render";
    StepId["PostRender"] = "postRender";
    StepId["FixedUpdate"] = "fixedUpdate";
})(StepId || (StepId = {}));

var maxElapsed = 40;
var defaultElapsed = (1 / 60) * 1000;
var useDefaultElapsed = true;
var willRunNextFrame = false;
var isProcessing = false;
var frame = {
    delta: 0,
    timestamp: 0
};
var stepsOrder = [
    StepId.Read,
    StepId.Update,
    StepId.Render,
    StepId.PostRender
];
var setWillRunNextFrame = function (willRun) { return (willRunNextFrame = willRun); };
var _a = stepsOrder.reduce(function (acc, key) {
    var step = createStep(setWillRunNextFrame);
    acc.sync[key] = function (process, keepAlive, immediate) {
        if (keepAlive === void 0) { keepAlive = false; }
        if (immediate === void 0) { immediate = false; }
        if (!willRunNextFrame)
            startLoop();
        step.schedule(process, keepAlive, immediate);
        return process;
    };
    acc.cancelSync[key] = function (process) { return step.cancel(process); };
    acc.steps[key] = step;
    return acc;
}, {
    steps: {},
    sync: {},
    cancelSync: {}
}), steps = _a.steps, sync = _a.sync, cancelSync = _a.cancelSync;
var processStep = function (stepId) { return steps[stepId].process(frame); };
var processFrame = function (timestamp) {
    willRunNextFrame = false;
    frame.delta = useDefaultElapsed
        ? defaultElapsed
        : Math.max(Math.min(timestamp - frame.timestamp, maxElapsed), 1);
    if (!useDefaultElapsed)
        defaultElapsed = frame.delta;
    frame.timestamp = timestamp;
    isProcessing = true;
    stepsOrder.forEach(processStep);
    isProcessing = false;
    if (willRunNextFrame) {
        useDefaultElapsed = false;
        onNextFrame(processFrame);
    }
};
var startLoop = function () {
    willRunNextFrame = true;
    useDefaultElapsed = true;
    if (!isProcessing)
        onNextFrame(processFrame);
};
var getFrameData = function () { return frame; };

exports.cancelSync = cancelSync;
exports.default = sync;
exports.getFrameData = getFrameData;