| 1 | /**
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| 2 | * @license React
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| 3 | * scheduler-unstable_post_task.production.js
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| 4 | *
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| 5 | * Copyright (c) Meta Platforms, Inc. and affiliates.
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| 6 | *
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| 7 | * This source code is licensed under the MIT license found in the
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| 8 | * LICENSE file in the root directory of this source tree.
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| 9 | */
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| 10 |
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| 11 | "use strict";
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| 12 | var perf = window.performance,
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| 13 | setTimeout = window.setTimeout,
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| 14 | scheduler = global.scheduler,
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| 15 | getCurrentTime = perf.now.bind(perf),
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| 16 | deadline = 0,
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| 17 | currentPriorityLevel_DEPRECATED = 3;
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| 18 | function runTask(priorityLevel, postTaskPriority, node, callback) {
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| 19 | deadline = getCurrentTime() + 5;
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| 20 | try {
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| 21 | currentPriorityLevel_DEPRECATED = priorityLevel;
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| 22 | var result = callback(!1);
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| 23 | if ("function" === typeof result) {
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| 24 | var continuationOptions = { signal: node._controller.signal },
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| 25 | nextTask = runTask.bind(
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| 26 | null,
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| 27 | priorityLevel,
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| 28 | postTaskPriority,
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| 29 | node,
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| 30 | result
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| 31 | );
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| 32 | void 0 !== scheduler.yield
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| 33 | ? scheduler
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| 34 | .yield(continuationOptions)
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| 35 | .then(nextTask)
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| 36 | .catch(handleAbortError)
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| 37 | : scheduler
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| 38 | .postTask(nextTask, continuationOptions)
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| 39 | .catch(handleAbortError);
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| 40 | }
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| 41 | } catch (error) {
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| 42 | setTimeout(function () {
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| 43 | throw error;
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| 44 | });
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| 45 | } finally {
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| 46 | currentPriorityLevel_DEPRECATED = 3;
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| 47 | }
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| 48 | }
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| 49 | function handleAbortError() {}
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| 50 | exports.unstable_IdlePriority = 5;
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| 51 | exports.unstable_ImmediatePriority = 1;
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| 52 | exports.unstable_LowPriority = 4;
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| 53 | exports.unstable_NormalPriority = 3;
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| 54 | exports.unstable_Profiling = null;
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| 55 | exports.unstable_UserBlockingPriority = 2;
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| 56 | exports.unstable_cancelCallback = function (node) {
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| 57 | node._controller.abort();
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| 58 | };
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| 59 | exports.unstable_forceFrameRate = function () {};
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| 60 | exports.unstable_getCurrentPriorityLevel = function () {
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| 61 | return currentPriorityLevel_DEPRECATED;
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| 62 | };
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| 63 | exports.unstable_next = function (callback) {
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| 64 | switch (currentPriorityLevel_DEPRECATED) {
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| 65 | case 1:
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| 66 | case 2:
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| 67 | case 3:
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| 68 | var priorityLevel = 3;
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| 69 | break;
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| 70 | default:
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| 71 | priorityLevel = currentPriorityLevel_DEPRECATED;
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| 72 | }
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| 73 | var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
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| 74 | currentPriorityLevel_DEPRECATED = priorityLevel;
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| 75 | try {
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| 76 | return callback();
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| 77 | } finally {
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| 78 | currentPriorityLevel_DEPRECATED = previousPriorityLevel;
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| 79 | }
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| 80 | };
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| 81 | exports.unstable_now = getCurrentTime;
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| 82 | exports.unstable_requestPaint = function () {};
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| 83 | exports.unstable_runWithPriority = function (priorityLevel, callback) {
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| 84 | var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
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| 85 | currentPriorityLevel_DEPRECATED = priorityLevel;
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| 86 | try {
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| 87 | return callback();
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| 88 | } finally {
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| 89 | currentPriorityLevel_DEPRECATED = previousPriorityLevel;
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| 90 | }
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| 91 | };
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| 92 | exports.unstable_scheduleCallback = function (
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| 93 | priorityLevel,
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| 94 | callback,
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| 95 | options
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| 96 | ) {
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| 97 | switch (priorityLevel) {
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| 98 | case 1:
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| 99 | case 2:
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| 100 | var postTaskPriority = "user-blocking";
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| 101 | break;
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| 102 | case 4:
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| 103 | case 3:
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| 104 | postTaskPriority = "user-visible";
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| 105 | break;
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| 106 | case 5:
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| 107 | postTaskPriority = "background";
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| 108 | break;
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| 109 | default:
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| 110 | postTaskPriority = "user-visible";
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| 111 | }
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| 112 | var controller = new TaskController({ priority: postTaskPriority });
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| 113 | options = {
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| 114 | delay: "object" === typeof options && null !== options ? options.delay : 0,
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| 115 | signal: controller.signal
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| 116 | };
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| 117 | controller = { _controller: controller };
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| 118 | scheduler
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| 119 | .postTask(
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| 120 | runTask.bind(null, priorityLevel, postTaskPriority, controller, callback),
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| 121 | options
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| 122 | )
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| 123 | .catch(handleAbortError);
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| 124 | return controller;
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| 125 | };
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| 126 | exports.unstable_shouldYield = function () {
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| 127 | return getCurrentTime() >= deadline;
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| 128 | };
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| 129 | exports.unstable_wrapCallback = function (callback) {
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| 130 | var parentPriorityLevel = currentPriorityLevel_DEPRECATED;
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| 131 | return function () {
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| 132 | var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
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| 133 | currentPriorityLevel_DEPRECATED = parentPriorityLevel;
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| 134 | try {
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| 135 | return callback();
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| 136 | } finally {
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| 137 | currentPriorityLevel_DEPRECATED = previousPriorityLevel;
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| 138 | }
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| 139 | };
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| 140 | };
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