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WIP - add extractor, generate snippet_data

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Stefan Fejes
2019-08-20 15:52:05 +02:00
parent 88084d3d30
commit cc8f1d8a7a
37396 changed files with 4588842 additions and 133 deletions
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node_modules/scheduler/cjs/scheduler.development.js generated vendored Normal file
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/** @license React v0.13.6
* scheduler.development.js
*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
'use strict';
if (process.env.NODE_ENV !== "production") {
(function() {
'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
var enableSchedulerDebugging = false;
/* eslint-disable no-var */
// TODO: Use symbols?
var ImmediatePriority = 1;
var UserBlockingPriority = 2;
var NormalPriority = 3;
var LowPriority = 4;
var IdlePriority = 5;
// Max 31 bit integer. The max integer size in V8 for 32-bit systems.
// Math.pow(2, 30) - 1
// 0b111111111111111111111111111111
var maxSigned31BitInt = 1073741823;
// Times out immediately
var IMMEDIATE_PRIORITY_TIMEOUT = -1;
// Eventually times out
var USER_BLOCKING_PRIORITY = 250;
var NORMAL_PRIORITY_TIMEOUT = 5000;
var LOW_PRIORITY_TIMEOUT = 10000;
// Never times out
var IDLE_PRIORITY = maxSigned31BitInt;
// Callbacks are stored as a circular, doubly linked list.
var firstCallbackNode = null;
var currentDidTimeout = false;
// Pausing the scheduler is useful for debugging.
var isSchedulerPaused = false;
var currentPriorityLevel = NormalPriority;
var currentEventStartTime = -1;
var currentExpirationTime = -1;
// This is set when a callback is being executed, to prevent re-entrancy.
var isExecutingCallback = false;
var isHostCallbackScheduled = false;
var hasNativePerformanceNow = typeof performance === 'object' && typeof performance.now === 'function';
function ensureHostCallbackIsScheduled() {
if (isExecutingCallback) {
// Don't schedule work yet; wait until the next time we yield.
return;
}
// Schedule the host callback using the earliest expiration in the list.
var expirationTime = firstCallbackNode.expirationTime;
if (!isHostCallbackScheduled) {
isHostCallbackScheduled = true;
} else {
// Cancel the existing host callback.
cancelHostCallback();
}
requestHostCallback(flushWork, expirationTime);
}
function flushFirstCallback() {
var flushedNode = firstCallbackNode;
// Remove the node from the list before calling the callback. That way the
// list is in a consistent state even if the callback throws.
var next = firstCallbackNode.next;
if (firstCallbackNode === next) {
// This is the last callback in the list.
firstCallbackNode = null;
next = null;
} else {
var lastCallbackNode = firstCallbackNode.previous;
firstCallbackNode = lastCallbackNode.next = next;
next.previous = lastCallbackNode;
}
flushedNode.next = flushedNode.previous = null;
// Now it's safe to call the callback.
var callback = flushedNode.callback;
var expirationTime = flushedNode.expirationTime;
var priorityLevel = flushedNode.priorityLevel;
var previousPriorityLevel = currentPriorityLevel;
var previousExpirationTime = currentExpirationTime;
currentPriorityLevel = priorityLevel;
currentExpirationTime = expirationTime;
var continuationCallback;
try {
continuationCallback = callback();
} finally {
currentPriorityLevel = previousPriorityLevel;
currentExpirationTime = previousExpirationTime;
}
// A callback may return a continuation. The continuation should be scheduled
// with the same priority and expiration as the just-finished callback.
if (typeof continuationCallback === 'function') {
var continuationNode = {
callback: continuationCallback,
priorityLevel: priorityLevel,
expirationTime: expirationTime,
next: null,
previous: null
};
// Insert the new callback into the list, sorted by its expiration. This is
// almost the same as the code in `scheduleCallback`, except the callback
// is inserted into the list *before* callbacks of equal expiration instead
// of after.
if (firstCallbackNode === null) {
// This is the first callback in the list.
firstCallbackNode = continuationNode.next = continuationNode.previous = continuationNode;
} else {
var nextAfterContinuation = null;
var node = firstCallbackNode;
do {
if (node.expirationTime >= expirationTime) {
// This callback expires at or after the continuation. We will insert
// the continuation *before* this callback.
nextAfterContinuation = node;
break;
}
node = node.next;
} while (node !== firstCallbackNode);
if (nextAfterContinuation === null) {
// No equal or lower priority callback was found, which means the new
// callback is the lowest priority callback in the list.
nextAfterContinuation = firstCallbackNode;
} else if (nextAfterContinuation === firstCallbackNode) {
// The new callback is the highest priority callback in the list.
firstCallbackNode = continuationNode;
ensureHostCallbackIsScheduled();
}
var previous = nextAfterContinuation.previous;
previous.next = nextAfterContinuation.previous = continuationNode;
continuationNode.next = nextAfterContinuation;
continuationNode.previous = previous;
}
}
}
function flushImmediateWork() {
if (
// Confirm we've exited the outer most event handler
currentEventStartTime === -1 && firstCallbackNode !== null && firstCallbackNode.priorityLevel === ImmediatePriority) {
isExecutingCallback = true;
try {
do {
flushFirstCallback();
} while (
// Keep flushing until there are no more immediate callbacks
firstCallbackNode !== null && firstCallbackNode.priorityLevel === ImmediatePriority);
} finally {
isExecutingCallback = false;
if (firstCallbackNode !== null) {
// There's still work remaining. Request another callback.
ensureHostCallbackIsScheduled();
} else {
isHostCallbackScheduled = false;
}
}
}
}
function flushWork(didTimeout) {
// Exit right away if we're currently paused
if (enableSchedulerDebugging && isSchedulerPaused) {
return;
}
isExecutingCallback = true;
var previousDidTimeout = currentDidTimeout;
currentDidTimeout = didTimeout;
try {
if (didTimeout) {
// Flush all the expired callbacks without yielding.
while (firstCallbackNode !== null && !(enableSchedulerDebugging && isSchedulerPaused)) {
// TODO Wrap in feature flag
// Read the current time. Flush all the callbacks that expire at or
// earlier than that time. Then read the current time again and repeat.
// This optimizes for as few performance.now calls as possible.
var currentTime = exports.unstable_now();
if (firstCallbackNode.expirationTime <= currentTime) {
do {
flushFirstCallback();
} while (firstCallbackNode !== null && firstCallbackNode.expirationTime <= currentTime && !(enableSchedulerDebugging && isSchedulerPaused));
continue;
}
break;
}
} else {
// Keep flushing callbacks until we run out of time in the frame.
if (firstCallbackNode !== null) {
do {
if (enableSchedulerDebugging && isSchedulerPaused) {
break;
}
flushFirstCallback();
} while (firstCallbackNode !== null && !shouldYieldToHost());
}
}
} finally {
isExecutingCallback = false;
currentDidTimeout = previousDidTimeout;
if (firstCallbackNode !== null) {
// There's still work remaining. Request another callback.
ensureHostCallbackIsScheduled();
} else {
isHostCallbackScheduled = false;
}
// Before exiting, flush all the immediate work that was scheduled.
flushImmediateWork();
}
}
function unstable_runWithPriority(priorityLevel, eventHandler) {
switch (priorityLevel) {
case ImmediatePriority:
case UserBlockingPriority:
case NormalPriority:
case LowPriority:
case IdlePriority:
break;
default:
priorityLevel = NormalPriority;
}
var previousPriorityLevel = currentPriorityLevel;
var previousEventStartTime = currentEventStartTime;
currentPriorityLevel = priorityLevel;
currentEventStartTime = exports.unstable_now();
try {
return eventHandler();
} finally {
currentPriorityLevel = previousPriorityLevel;
currentEventStartTime = previousEventStartTime;
// Before exiting, flush all the immediate work that was scheduled.
flushImmediateWork();
}
}
function unstable_next(eventHandler) {
var priorityLevel = void 0;
switch (currentPriorityLevel) {
case ImmediatePriority:
case UserBlockingPriority:
case NormalPriority:
// Shift down to normal priority
priorityLevel = NormalPriority;
break;
default:
// Anything lower than normal priority should remain at the current level.
priorityLevel = currentPriorityLevel;
break;
}
var previousPriorityLevel = currentPriorityLevel;
var previousEventStartTime = currentEventStartTime;
currentPriorityLevel = priorityLevel;
currentEventStartTime = exports.unstable_now();
try {
return eventHandler();
} finally {
currentPriorityLevel = previousPriorityLevel;
currentEventStartTime = previousEventStartTime;
// Before exiting, flush all the immediate work that was scheduled.
flushImmediateWork();
}
}
function unstable_wrapCallback(callback) {
var parentPriorityLevel = currentPriorityLevel;
return function () {
// This is a fork of runWithPriority, inlined for performance.
var previousPriorityLevel = currentPriorityLevel;
var previousEventStartTime = currentEventStartTime;
currentPriorityLevel = parentPriorityLevel;
currentEventStartTime = exports.unstable_now();
try {
return callback.apply(this, arguments);
} finally {
currentPriorityLevel = previousPriorityLevel;
currentEventStartTime = previousEventStartTime;
flushImmediateWork();
}
};
}
function unstable_scheduleCallback(callback, deprecated_options) {
var startTime = currentEventStartTime !== -1 ? currentEventStartTime : exports.unstable_now();
var expirationTime;
if (typeof deprecated_options === 'object' && deprecated_options !== null && typeof deprecated_options.timeout === 'number') {
// FIXME: Remove this branch once we lift expiration times out of React.
expirationTime = startTime + deprecated_options.timeout;
} else {
switch (currentPriorityLevel) {
case ImmediatePriority:
expirationTime = startTime + IMMEDIATE_PRIORITY_TIMEOUT;
break;
case UserBlockingPriority:
expirationTime = startTime + USER_BLOCKING_PRIORITY;
break;
case IdlePriority:
expirationTime = startTime + IDLE_PRIORITY;
break;
case LowPriority:
expirationTime = startTime + LOW_PRIORITY_TIMEOUT;
break;
case NormalPriority:
default:
expirationTime = startTime + NORMAL_PRIORITY_TIMEOUT;
}
}
var newNode = {
callback: callback,
priorityLevel: currentPriorityLevel,
expirationTime: expirationTime,
next: null,
previous: null
};
// Insert the new callback into the list, ordered first by expiration, then
// by insertion. So the new callback is inserted any other callback with
// equal expiration.
if (firstCallbackNode === null) {
// This is the first callback in the list.
firstCallbackNode = newNode.next = newNode.previous = newNode;
ensureHostCallbackIsScheduled();
} else {
var next = null;
var node = firstCallbackNode;
do {
if (node.expirationTime > expirationTime) {
// The new callback expires before this one.
next = node;
break;
}
node = node.next;
} while (node !== firstCallbackNode);
if (next === null) {
// No callback with a later expiration was found, which means the new
// callback has the latest expiration in the list.
next = firstCallbackNode;
} else if (next === firstCallbackNode) {
// The new callback has the earliest expiration in the entire list.
firstCallbackNode = newNode;
ensureHostCallbackIsScheduled();
}
var previous = next.previous;
previous.next = next.previous = newNode;
newNode.next = next;
newNode.previous = previous;
}
return newNode;
}
function unstable_pauseExecution() {
isSchedulerPaused = true;
}
function unstable_continueExecution() {
isSchedulerPaused = false;
if (firstCallbackNode !== null) {
ensureHostCallbackIsScheduled();
}
}
function unstable_getFirstCallbackNode() {
return firstCallbackNode;
}
function unstable_cancelCallback(callbackNode) {
var next = callbackNode.next;
if (next === null) {
// Already cancelled.
return;
}
if (next === callbackNode) {
// This is the only scheduled callback. Clear the list.
firstCallbackNode = null;
} else {
// Remove the callback from its position in the list.
if (callbackNode === firstCallbackNode) {
firstCallbackNode = next;
}
var previous = callbackNode.previous;
previous.next = next;
next.previous = previous;
}
callbackNode.next = callbackNode.previous = null;
}
function unstable_getCurrentPriorityLevel() {
return currentPriorityLevel;
}
function unstable_shouldYield() {
return !currentDidTimeout && (firstCallbackNode !== null && firstCallbackNode.expirationTime < currentExpirationTime || shouldYieldToHost());
}
// The remaining code is essentially a polyfill for requestIdleCallback. It
// works by scheduling a requestAnimationFrame, storing the time for the start
// of the frame, then scheduling a postMessage which gets scheduled after paint.
// Within the postMessage handler do as much work as possible until time + frame
// rate. By separating the idle call into a separate event tick we ensure that
// layout, paint and other browser work is counted against the available time.
// The frame rate is dynamically adjusted.
// We capture a local reference to any global, in case it gets polyfilled after
// this module is initially evaluated. We want to be using a
// consistent implementation.
var localDate = Date;
// This initialization code may run even on server environments if a component
// just imports ReactDOM (e.g. for findDOMNode). Some environments might not
// have setTimeout or clearTimeout. However, we always expect them to be defined
// on the client. https://github.com/facebook/react/pull/13088
var localSetTimeout = typeof setTimeout === 'function' ? setTimeout : undefined;
var localClearTimeout = typeof clearTimeout === 'function' ? clearTimeout : undefined;
// We don't expect either of these to necessarily be defined, but we will error
// later if they are missing on the client.
var localRequestAnimationFrame = typeof requestAnimationFrame === 'function' ? requestAnimationFrame : undefined;
var localCancelAnimationFrame = typeof cancelAnimationFrame === 'function' ? cancelAnimationFrame : undefined;
// requestAnimationFrame does not run when the tab is in the background. If
// we're backgrounded we prefer for that work to happen so that the page
// continues to load in the background. So we also schedule a 'setTimeout' as
// a fallback.
// TODO: Need a better heuristic for backgrounded work.
var ANIMATION_FRAME_TIMEOUT = 100;
var rAFID;
var rAFTimeoutID;
var requestAnimationFrameWithTimeout = function (callback) {
// schedule rAF and also a setTimeout
rAFID = localRequestAnimationFrame(function (timestamp) {
// cancel the setTimeout
localClearTimeout(rAFTimeoutID);
callback(timestamp);
});
rAFTimeoutID = localSetTimeout(function () {
// cancel the requestAnimationFrame
localCancelAnimationFrame(rAFID);
callback(exports.unstable_now());
}, ANIMATION_FRAME_TIMEOUT);
};
if (hasNativePerformanceNow) {
var Performance = performance;
exports.unstable_now = function () {
return Performance.now();
};
} else {
exports.unstable_now = function () {
return localDate.now();
};
}
var requestHostCallback;
var cancelHostCallback;
var shouldYieldToHost;
var globalValue = null;
if (typeof window !== 'undefined') {
globalValue = window;
} else if (typeof global !== 'undefined') {
globalValue = global;
}
if (globalValue && globalValue._schedMock) {
// Dynamic injection, only for testing purposes.
var globalImpl = globalValue._schedMock;
requestHostCallback = globalImpl[0];
cancelHostCallback = globalImpl[1];
shouldYieldToHost = globalImpl[2];
exports.unstable_now = globalImpl[3];
} else if (
// If Scheduler runs in a non-DOM environment, it falls back to a naive
// implementation using setTimeout.
typeof window === 'undefined' ||
// Check if MessageChannel is supported, too.
typeof MessageChannel !== 'function') {
// If this accidentally gets imported in a non-browser environment, e.g. JavaScriptCore,
// fallback to a naive implementation.
var _callback = null;
var _flushCallback = function (didTimeout) {
if (_callback !== null) {
try {
_callback(didTimeout);
} finally {
_callback = null;
}
}
};
requestHostCallback = function (cb, ms) {
if (_callback !== null) {
// Protect against re-entrancy.
setTimeout(requestHostCallback, 0, cb);
} else {
_callback = cb;
setTimeout(_flushCallback, 0, false);
}
};
cancelHostCallback = function () {
_callback = null;
};
shouldYieldToHost = function () {
return false;
};
} else {
if (typeof console !== 'undefined') {
// TODO: Remove fb.me link
if (typeof localRequestAnimationFrame !== 'function') {
console.error("This browser doesn't support requestAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
}
if (typeof localCancelAnimationFrame !== 'function') {
console.error("This browser doesn't support cancelAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
}
}
var scheduledHostCallback = null;
var isMessageEventScheduled = false;
var timeoutTime = -1;
var isAnimationFrameScheduled = false;
var isFlushingHostCallback = false;
var frameDeadline = 0;
// We start out assuming that we run at 30fps but then the heuristic tracking
// will adjust this value to a faster fps if we get more frequent animation
// frames.
var previousFrameTime = 33;
var activeFrameTime = 33;
shouldYieldToHost = function () {
return frameDeadline <= exports.unstable_now();
};
// We use the postMessage trick to defer idle work until after the repaint.
var channel = new MessageChannel();
var port = channel.port2;
channel.port1.onmessage = function (event) {
isMessageEventScheduled = false;
var prevScheduledCallback = scheduledHostCallback;
var prevTimeoutTime = timeoutTime;
scheduledHostCallback = null;
timeoutTime = -1;
var currentTime = exports.unstable_now();
var didTimeout = false;
if (frameDeadline - currentTime <= 0) {
// There's no time left in this idle period. Check if the callback has
// a timeout and whether it's been exceeded.
if (prevTimeoutTime !== -1 && prevTimeoutTime <= currentTime) {
// Exceeded the timeout. Invoke the callback even though there's no
// time left.
didTimeout = true;
} else {
// No timeout.
if (!isAnimationFrameScheduled) {
// Schedule another animation callback so we retry later.
isAnimationFrameScheduled = true;
requestAnimationFrameWithTimeout(animationTick);
}
// Exit without invoking the callback.
scheduledHostCallback = prevScheduledCallback;
timeoutTime = prevTimeoutTime;
return;
}
}
if (prevScheduledCallback !== null) {
isFlushingHostCallback = true;
try {
prevScheduledCallback(didTimeout);
} finally {
isFlushingHostCallback = false;
}
}
};
var animationTick = function (rafTime) {
if (scheduledHostCallback !== null) {
// Eagerly schedule the next animation callback at the beginning of the
// frame. If the scheduler queue is not empty at the end of the frame, it
// will continue flushing inside that callback. If the queue *is* empty,
// then it will exit immediately. Posting the callback at the start of the
// frame ensures it's fired within the earliest possible frame. If we
// waited until the end of the frame to post the callback, we risk the
// browser skipping a frame and not firing the callback until the frame
// after that.
requestAnimationFrameWithTimeout(animationTick);
} else {
// No pending work. Exit.
isAnimationFrameScheduled = false;
return;
}
var nextFrameTime = rafTime - frameDeadline + activeFrameTime;
if (nextFrameTime < activeFrameTime && previousFrameTime < activeFrameTime) {
if (nextFrameTime < 8) {
// Defensive coding. We don't support higher frame rates than 120hz.
// If the calculated frame time gets lower than 8, it is probably a bug.
nextFrameTime = 8;
}
// If one frame goes long, then the next one can be short to catch up.
// If two frames are short in a row, then that's an indication that we
// actually have a higher frame rate than what we're currently optimizing.
// We adjust our heuristic dynamically accordingly. For example, if we're
// running on 120hz display or 90hz VR display.
// Take the max of the two in case one of them was an anomaly due to
// missed frame deadlines.
activeFrameTime = nextFrameTime < previousFrameTime ? previousFrameTime : nextFrameTime;
} else {
previousFrameTime = nextFrameTime;
}
frameDeadline = rafTime + activeFrameTime;
if (!isMessageEventScheduled) {
isMessageEventScheduled = true;
port.postMessage(undefined);
}
};
requestHostCallback = function (callback, absoluteTimeout) {
scheduledHostCallback = callback;
timeoutTime = absoluteTimeout;
if (isFlushingHostCallback || absoluteTimeout < 0) {
// Don't wait for the next frame. Continue working ASAP, in a new event.
port.postMessage(undefined);
} else if (!isAnimationFrameScheduled) {
// If rAF didn't already schedule one, we need to schedule a frame.
// TODO: If this rAF doesn't materialize because the browser throttles, we
// might want to still have setTimeout trigger rIC as a backup to ensure
// that we keep performing work.
isAnimationFrameScheduled = true;
requestAnimationFrameWithTimeout(animationTick);
}
};
cancelHostCallback = function () {
scheduledHostCallback = null;
isMessageEventScheduled = false;
timeoutTime = -1;
};
}
exports.unstable_ImmediatePriority = ImmediatePriority;
exports.unstable_UserBlockingPriority = UserBlockingPriority;
exports.unstable_NormalPriority = NormalPriority;
exports.unstable_IdlePriority = IdlePriority;
exports.unstable_LowPriority = LowPriority;
exports.unstable_runWithPriority = unstable_runWithPriority;
exports.unstable_next = unstable_next;
exports.unstable_scheduleCallback = unstable_scheduleCallback;
exports.unstable_cancelCallback = unstable_cancelCallback;
exports.unstable_wrapCallback = unstable_wrapCallback;
exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
exports.unstable_shouldYield = unstable_shouldYield;
exports.unstable_continueExecution = unstable_continueExecution;
exports.unstable_pauseExecution = unstable_pauseExecution;
exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
})();
}