@vue/runtime-core
Version:
@vue/runtime-core
1,295 lines (1,283 loc) • 249 kB
JavaScript
'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
var reactivity = require('@vue/reactivity');
var shared = require('@vue/shared');
const stack = [];
function warn(msg, ...args) {
// avoid props formatting or warn handler tracking deps that might be mutated
// during patch, leading to infinite recursion.
reactivity.pauseTracking();
const instance = stack.length ? stack[stack.length - 1].component : null;
const appWarnHandler = instance && instance.appContext.config.warnHandler;
const trace = getComponentTrace();
if (appWarnHandler) {
callWithErrorHandling(appWarnHandler, instance, 11 /* APP_WARN_HANDLER */, [
msg + args.join(''),
instance && instance.proxy,
trace
.map(({ vnode }) => `at <${formatComponentName(instance, vnode.type)}>`)
.join('\n'),
trace
]);
}
else {
const warnArgs = [`[Vue warn]: ${msg}`, ...args];
/* istanbul ignore if */
if (trace.length &&
// avoid spamming console during tests
!false) {
warnArgs.push(`\n`, ...formatTrace(trace));
}
console.warn(...warnArgs);
}
reactivity.resetTracking();
}
function getComponentTrace() {
let currentVNode = stack[stack.length - 1];
if (!currentVNode) {
return [];
}
// we can't just use the stack because it will be incomplete during updates
// that did not start from the root. Re-construct the parent chain using
// instance parent pointers.
const normalizedStack = [];
while (currentVNode) {
const last = normalizedStack[0];
if (last && last.vnode === currentVNode) {
last.recurseCount++;
}
else {
normalizedStack.push({
vnode: currentVNode,
recurseCount: 0
});
}
const parentInstance = currentVNode.component && currentVNode.component.parent;
currentVNode = parentInstance && parentInstance.vnode;
}
return normalizedStack;
}
/* istanbul ignore next */
function formatTrace(trace) {
const logs = [];
trace.forEach((entry, i) => {
logs.push(...(i === 0 ? [] : [`\n`]), ...formatTraceEntry(entry));
});
return logs;
}
function formatTraceEntry({ vnode, recurseCount }) {
const postfix = recurseCount > 0 ? `... (${recurseCount} recursive calls)` : ``;
const isRoot = vnode.component ? vnode.component.parent == null : false;
const open = ` at <${formatComponentName(vnode.component, vnode.type, isRoot)}`;
const close = `>` + postfix;
return vnode.props
? [open, ...formatProps(vnode.props), close]
: [open + close];
}
/* istanbul ignore next */
function formatProps(props) {
const res = [];
const keys = Object.keys(props);
keys.slice(0, 3).forEach(key => {
res.push(...formatProp(key, props[key]));
});
if (keys.length > 3) {
res.push(` ...`);
}
return res;
}
/* istanbul ignore next */
function formatProp(key, value, raw) {
if (shared.isString(value)) {
value = JSON.stringify(value);
return raw ? value : [`${key}=${value}`];
}
else if (typeof value === 'number' ||
typeof value === 'boolean' ||
value == null) {
return raw ? value : [`${key}=${value}`];
}
else if (reactivity.isRef(value)) {
value = formatProp(key, reactivity.toRaw(value.value), true);
return raw ? value : [`${key}=Ref<`, value, `>`];
}
else if (shared.isFunction(value)) {
return [`${key}=fn${value.name ? `<${value.name}>` : ``}`];
}
else {
value = reactivity.toRaw(value);
return raw ? value : [`${key}=`, value];
}
}
function callWithErrorHandling(fn, instance, type, args) {
let res;
try {
res = args ? fn(...args) : fn();
}
catch (err) {
handleError(err, instance, type);
}
return res;
}
function callWithAsyncErrorHandling(fn, instance, type, args) {
if (shared.isFunction(fn)) {
const res = callWithErrorHandling(fn, instance, type, args);
if (res && shared.isPromise(res)) {
res.catch(err => {
handleError(err, instance, type);
});
}
return res;
}
const values = [];
for (let i = 0; i < fn.length; i++) {
values.push(callWithAsyncErrorHandling(fn[i], instance, type, args));
}
return values;
}
function handleError(err, instance, type, throwInDev = true) {
const contextVNode = instance ? instance.vnode : null;
if (instance) {
let cur = instance.parent;
// the exposed instance is the render proxy to keep it consistent with 2.x
const exposedInstance = instance.proxy;
// in production the hook receives only the error code
const errorInfo = type;
while (cur) {
const errorCapturedHooks = cur.ec;
if (errorCapturedHooks) {
for (let i = 0; i < errorCapturedHooks.length; i++) {
if (errorCapturedHooks[i](err, exposedInstance, errorInfo) === false) {
return;
}
}
}
cur = cur.parent;
}
// app-level handling
const appErrorHandler = instance.appContext.config.errorHandler;
if (appErrorHandler) {
callWithErrorHandling(appErrorHandler, null, 10 /* APP_ERROR_HANDLER */, [err, exposedInstance, errorInfo]);
return;
}
}
logError(err, type, contextVNode, throwInDev);
}
function logError(err, type, contextVNode, throwInDev = true) {
{
// recover in prod to reduce the impact on end-user
console.error(err);
}
}
let isFlushing = false;
let isFlushPending = false;
const queue = [];
let flushIndex = 0;
const pendingPreFlushCbs = [];
let activePreFlushCbs = null;
let preFlushIndex = 0;
const pendingPostFlushCbs = [];
let activePostFlushCbs = null;
let postFlushIndex = 0;
const resolvedPromise = /*#__PURE__*/ Promise.resolve();
let currentFlushPromise = null;
let currentPreFlushParentJob = null;
function nextTick(fn) {
const p = currentFlushPromise || resolvedPromise;
return fn ? p.then(this ? fn.bind(this) : fn) : p;
}
// #2768
// Use binary-search to find a suitable position in the queue,
// so that the queue maintains the increasing order of job's id,
// which can prevent the job from being skipped and also can avoid repeated patching.
function findInsertionIndex(id) {
// the start index should be `flushIndex + 1`
let start = flushIndex + 1;
let end = queue.length;
while (start < end) {
const middle = (start + end) >>> 1;
const middleJobId = getId(queue[middle]);
middleJobId < id ? (start = middle + 1) : (end = middle);
}
return start;
}
function queueJob(job) {
// the dedupe search uses the startIndex argument of Array.includes()
// by default the search index includes the current job that is being run
// so it cannot recursively trigger itself again.
// if the job is a watch() callback, the search will start with a +1 index to
// allow it recursively trigger itself - it is the user's responsibility to
// ensure it doesn't end up in an infinite loop.
if ((!queue.length ||
!queue.includes(job, isFlushing && job.allowRecurse ? flushIndex + 1 : flushIndex)) &&
job !== currentPreFlushParentJob) {
if (job.id == null) {
queue.push(job);
}
else {
queue.splice(findInsertionIndex(job.id), 0, job);
}
queueFlush();
}
}
function queueFlush() {
if (!isFlushing && !isFlushPending) {
isFlushPending = true;
currentFlushPromise = resolvedPromise.then(flushJobs);
}
}
function invalidateJob(job) {
const i = queue.indexOf(job);
if (i > flushIndex) {
queue.splice(i, 1);
}
}
function queueCb(cb, activeQueue, pendingQueue, index) {
if (!shared.isArray(cb)) {
if (!activeQueue ||
!activeQueue.includes(cb, cb.allowRecurse ? index + 1 : index)) {
pendingQueue.push(cb);
}
}
else {
// if cb is an array, it is a component lifecycle hook which can only be
// triggered by a job, which is already deduped in the main queue, so
// we can skip duplicate check here to improve perf
pendingQueue.push(...cb);
}
queueFlush();
}
function queuePreFlushCb(cb) {
queueCb(cb, activePreFlushCbs, pendingPreFlushCbs, preFlushIndex);
}
function queuePostFlushCb(cb) {
queueCb(cb, activePostFlushCbs, pendingPostFlushCbs, postFlushIndex);
}
function flushPreFlushCbs(seen, parentJob = null) {
if (pendingPreFlushCbs.length) {
currentPreFlushParentJob = parentJob;
activePreFlushCbs = [...new Set(pendingPreFlushCbs)];
pendingPreFlushCbs.length = 0;
for (preFlushIndex = 0; preFlushIndex < activePreFlushCbs.length; preFlushIndex++) {
activePreFlushCbs[preFlushIndex]();
}
activePreFlushCbs = null;
preFlushIndex = 0;
currentPreFlushParentJob = null;
// recursively flush until it drains
flushPreFlushCbs(seen, parentJob);
}
}
function flushPostFlushCbs(seen) {
// flush any pre cbs queued during the flush (e.g. pre watchers)
flushPreFlushCbs();
if (pendingPostFlushCbs.length) {
const deduped = [...new Set(pendingPostFlushCbs)];
pendingPostFlushCbs.length = 0;
// #1947 already has active queue, nested flushPostFlushCbs call
if (activePostFlushCbs) {
activePostFlushCbs.push(...deduped);
return;
}
activePostFlushCbs = deduped;
activePostFlushCbs.sort((a, b) => getId(a) - getId(b));
for (postFlushIndex = 0; postFlushIndex < activePostFlushCbs.length; postFlushIndex++) {
activePostFlushCbs[postFlushIndex]();
}
activePostFlushCbs = null;
postFlushIndex = 0;
}
}
const getId = (job) => job.id == null ? Infinity : job.id;
function flushJobs(seen) {
isFlushPending = false;
isFlushing = true;
flushPreFlushCbs(seen);
// Sort queue before flush.
// This ensures that:
// 1. Components are updated from parent to child. (because parent is always
// created before the child so its render effect will have smaller
// priority number)
// 2. If a component is unmounted during a parent component's update,
// its update can be skipped.
queue.sort((a, b) => getId(a) - getId(b));
// conditional usage of checkRecursiveUpdate must be determined out of
// try ... catch block since Rollup by default de-optimizes treeshaking
// inside try-catch. This can leave all warning code unshaked. Although
// they would get eventually shaken by a minifier like terser, some minifiers
// would fail to do that (e.g. https://github.com/evanw/esbuild/issues/1610)
const check = shared.NOOP;
try {
for (flushIndex = 0; flushIndex < queue.length; flushIndex++) {
const job = queue[flushIndex];
if (job && job.active !== false) {
if (false && check(job)) ;
// console.log(`running:`, job.id)
callWithErrorHandling(job, null, 14 /* SCHEDULER */);
}
}
}
finally {
flushIndex = 0;
queue.length = 0;
flushPostFlushCbs();
isFlushing = false;
currentFlushPromise = null;
// some postFlushCb queued jobs!
// keep flushing until it drains.
if (queue.length ||
pendingPreFlushCbs.length ||
pendingPostFlushCbs.length) {
flushJobs(seen);
}
}
}
let buffer = [];
function setDevtoolsHook(hook, target) {
var _a, _b;
exports.devtools = hook;
if (exports.devtools) {
exports.devtools.enabled = true;
buffer.forEach(({ event, args }) => exports.devtools.emit(event, ...args));
buffer = [];
}
else if (
// handle late devtools injection - only do this if we are in an actual
// browser environment to avoid the timer handle stalling test runner exit
// (#4815)
typeof window !== 'undefined' &&
// some envs mock window but not fully
window.HTMLElement &&
// also exclude jsdom
!((_b = (_a = window.navigator) === null || _a === void 0 ? void 0 : _a.userAgent) === null || _b === void 0 ? void 0 : _b.includes('jsdom'))) {
const replay = (target.__VUE_DEVTOOLS_HOOK_REPLAY__ =
target.__VUE_DEVTOOLS_HOOK_REPLAY__ || []);
replay.push((newHook) => {
setDevtoolsHook(newHook, target);
});
// clear buffer after 3s - the user probably doesn't have devtools installed
// at all, and keeping the buffer will cause memory leaks (#4738)
setTimeout(() => {
if (!exports.devtools) {
target.__VUE_DEVTOOLS_HOOK_REPLAY__ = null;
buffer = [];
}
}, 3000);
}
else {
buffer = [];
}
}
function emit(instance, event, ...rawArgs) {
if (instance.isUnmounted)
return;
const props = instance.vnode.props || shared.EMPTY_OBJ;
let args = rawArgs;
const isModelListener = event.startsWith('update:');
// for v-model update:xxx events, apply modifiers on args
const modelArg = isModelListener && event.slice(7);
if (modelArg && modelArg in props) {
const modifiersKey = `${modelArg === 'modelValue' ? 'model' : modelArg}Modifiers`;
const { number, trim } = props[modifiersKey] || shared.EMPTY_OBJ;
if (trim) {
args = rawArgs.map(a => a.trim());
}
if (number) {
args = rawArgs.map(shared.toNumber);
}
}
let handlerName;
let handler = props[(handlerName = shared.toHandlerKey(event))] ||
// also try camelCase event handler (#2249)
props[(handlerName = shared.toHandlerKey(shared.camelize(event)))];
// for v-model update:xxx events, also trigger kebab-case equivalent
// for props passed via kebab-case
if (!handler && isModelListener) {
handler = props[(handlerName = shared.toHandlerKey(shared.hyphenate(event)))];
}
if (handler) {
callWithAsyncErrorHandling(handler, instance, 6 /* COMPONENT_EVENT_HANDLER */, args);
}
const onceHandler = props[handlerName + `Once`];
if (onceHandler) {
if (!instance.emitted) {
instance.emitted = {};
}
else if (instance.emitted[handlerName]) {
return;
}
instance.emitted[handlerName] = true;
callWithAsyncErrorHandling(onceHandler, instance, 6 /* COMPONENT_EVENT_HANDLER */, args);
}
}
function normalizeEmitsOptions(comp, appContext, asMixin = false) {
const cache = appContext.emitsCache;
const cached = cache.get(comp);
if (cached !== undefined) {
return cached;
}
const raw = comp.emits;
let normalized = {};
// apply mixin/extends props
let hasExtends = false;
if (!shared.isFunction(comp)) {
const extendEmits = (raw) => {
const normalizedFromExtend = normalizeEmitsOptions(raw, appContext, true);
if (normalizedFromExtend) {
hasExtends = true;
shared.extend(normalized, normalizedFromExtend);
}
};
if (!asMixin && appContext.mixins.length) {
appContext.mixins.forEach(extendEmits);
}
if (comp.extends) {
extendEmits(comp.extends);
}
if (comp.mixins) {
comp.mixins.forEach(extendEmits);
}
}
if (!raw && !hasExtends) {
cache.set(comp, null);
return null;
}
if (shared.isArray(raw)) {
raw.forEach(key => (normalized[key] = null));
}
else {
shared.extend(normalized, raw);
}
cache.set(comp, normalized);
return normalized;
}
// Check if an incoming prop key is a declared emit event listener.
// e.g. With `emits: { click: null }`, props named `onClick` and `onclick` are
// both considered matched listeners.
function isEmitListener(options, key) {
if (!options || !shared.isOn(key)) {
return false;
}
key = key.slice(2).replace(/Once$/, '');
return (shared.hasOwn(options, key[0].toLowerCase() + key.slice(1)) ||
shared.hasOwn(options, shared.hyphenate(key)) ||
shared.hasOwn(options, key));
}
/**
* mark the current rendering instance for asset resolution (e.g.
* resolveComponent, resolveDirective) during render
*/
let currentRenderingInstance = null;
let currentScopeId = null;
/**
* Note: rendering calls maybe nested. The function returns the parent rendering
* instance if present, which should be restored after the render is done:
*
* ```js
* const prev = setCurrentRenderingInstance(i)
* // ...render
* setCurrentRenderingInstance(prev)
* ```
*/
function setCurrentRenderingInstance(instance) {
const prev = currentRenderingInstance;
currentRenderingInstance = instance;
currentScopeId = (instance && instance.type.__scopeId) || null;
return prev;
}
/**
* Set scope id when creating hoisted vnodes.
* @private compiler helper
*/
function pushScopeId(id) {
currentScopeId = id;
}
/**
* Technically we no longer need this after 3.0.8 but we need to keep the same
* API for backwards compat w/ code generated by compilers.
* @private
*/
function popScopeId() {
currentScopeId = null;
}
/**
* Only for backwards compat
* @private
*/
const withScopeId = (_id) => withCtx;
/**
* Wrap a slot function to memoize current rendering instance
* @private compiler helper
*/
function withCtx(fn, ctx = currentRenderingInstance, isNonScopedSlot // false only
) {
if (!ctx)
return fn;
// already normalized
if (fn._n) {
return fn;
}
const renderFnWithContext = (...args) => {
// If a user calls a compiled slot inside a template expression (#1745), it
// can mess up block tracking, so by default we disable block tracking and
// force bail out when invoking a compiled slot (indicated by the ._d flag).
// This isn't necessary if rendering a compiled `<slot>`, so we flip the
// ._d flag off when invoking the wrapped fn inside `renderSlot`.
if (renderFnWithContext._d) {
setBlockTracking(-1);
}
const prevInstance = setCurrentRenderingInstance(ctx);
const res = fn(...args);
setCurrentRenderingInstance(prevInstance);
if (renderFnWithContext._d) {
setBlockTracking(1);
}
return res;
};
// mark normalized to avoid duplicated wrapping
renderFnWithContext._n = true;
// mark this as compiled by default
// this is used in vnode.ts -> normalizeChildren() to set the slot
// rendering flag.
renderFnWithContext._c = true;
// disable block tracking by default
renderFnWithContext._d = true;
return renderFnWithContext;
}
function markAttrsAccessed() {
}
function renderComponentRoot(instance) {
const { type: Component, vnode, proxy, withProxy, props, propsOptions: [propsOptions], slots, attrs, emit, render, renderCache, data, setupState, ctx, inheritAttrs } = instance;
let result;
let fallthroughAttrs;
const prev = setCurrentRenderingInstance(instance);
try {
if (vnode.shapeFlag & 4 /* STATEFUL_COMPONENT */) {
// withProxy is a proxy with a different `has` trap only for
// runtime-compiled render functions using `with` block.
const proxyToUse = withProxy || proxy;
result = normalizeVNode(render.call(proxyToUse, proxyToUse, renderCache, props, setupState, data, ctx));
fallthroughAttrs = attrs;
}
else {
// functional
const render = Component;
// in dev, mark attrs accessed if optional props (attrs === props)
if (false && attrs === props) ;
result = normalizeVNode(render.length > 1
? render(props, false
? {
get attrs() {
markAttrsAccessed();
return attrs;
},
slots,
emit
}
: { attrs, slots, emit })
: render(props, null /* we know it doesn't need it */));
fallthroughAttrs = Component.props
? attrs
: getFunctionalFallthrough(attrs);
}
}
catch (err) {
blockStack.length = 0;
handleError(err, instance, 1 /* RENDER_FUNCTION */);
result = createVNode(Comment);
}
// attr merging
// in dev mode, comments are preserved, and it's possible for a template
// to have comments along side the root element which makes it a fragment
let root = result;
if (fallthroughAttrs && inheritAttrs !== false) {
const keys = Object.keys(fallthroughAttrs);
const { shapeFlag } = root;
if (keys.length) {
if (shapeFlag & (1 /* ELEMENT */ | 6 /* COMPONENT */)) {
if (propsOptions && keys.some(shared.isModelListener)) {
// If a v-model listener (onUpdate:xxx) has a corresponding declared
// prop, it indicates this component expects to handle v-model and
// it should not fallthrough.
// related: #1543, #1643, #1989
fallthroughAttrs = filterModelListeners(fallthroughAttrs, propsOptions);
}
root = cloneVNode(root, fallthroughAttrs);
}
}
}
// inherit directives
if (vnode.dirs) {
// clone before mutating since the root may be a hoisted vnode
root = cloneVNode(root);
root.dirs = root.dirs ? root.dirs.concat(vnode.dirs) : vnode.dirs;
}
// inherit transition data
if (vnode.transition) {
root.transition = vnode.transition;
}
{
result = root;
}
setCurrentRenderingInstance(prev);
return result;
}
function filterSingleRoot(children) {
let singleRoot;
for (let i = 0; i < children.length; i++) {
const child = children[i];
if (isVNode(child)) {
// ignore user comment
if (child.type !== Comment || child.children === 'v-if') {
if (singleRoot) {
// has more than 1 non-comment child, return now
return;
}
else {
singleRoot = child;
}
}
}
else {
return;
}
}
return singleRoot;
}
const getFunctionalFallthrough = (attrs) => {
let res;
for (const key in attrs) {
if (key === 'class' || key === 'style' || shared.isOn(key)) {
(res || (res = {}))[key] = attrs[key];
}
}
return res;
};
const filterModelListeners = (attrs, props) => {
const res = {};
for (const key in attrs) {
if (!shared.isModelListener(key) || !(key.slice(9) in props)) {
res[key] = attrs[key];
}
}
return res;
};
function shouldUpdateComponent(prevVNode, nextVNode, optimized) {
const { props: prevProps, children: prevChildren, component } = prevVNode;
const { props: nextProps, children: nextChildren, patchFlag } = nextVNode;
const emits = component.emitsOptions;
// force child update for runtime directive or transition on component vnode.
if (nextVNode.dirs || nextVNode.transition) {
return true;
}
if (optimized && patchFlag >= 0) {
if (patchFlag & 1024 /* DYNAMIC_SLOTS */) {
// slot content that references values that might have changed,
// e.g. in a v-for
return true;
}
if (patchFlag & 16 /* FULL_PROPS */) {
if (!prevProps) {
return !!nextProps;
}
// presence of this flag indicates props are always non-null
return hasPropsChanged(prevProps, nextProps, emits);
}
else if (patchFlag & 8 /* PROPS */) {
const dynamicProps = nextVNode.dynamicProps;
for (let i = 0; i < dynamicProps.length; i++) {
const key = dynamicProps[i];
if (nextProps[key] !== prevProps[key] &&
!isEmitListener(emits, key)) {
return true;
}
}
}
}
else {
// this path is only taken by manually written render functions
// so presence of any children leads to a forced update
if (prevChildren || nextChildren) {
if (!nextChildren || !nextChildren.$stable) {
return true;
}
}
if (prevProps === nextProps) {
return false;
}
if (!prevProps) {
return !!nextProps;
}
if (!nextProps) {
return true;
}
return hasPropsChanged(prevProps, nextProps, emits);
}
return false;
}
function hasPropsChanged(prevProps, nextProps, emitsOptions) {
const nextKeys = Object.keys(nextProps);
if (nextKeys.length !== Object.keys(prevProps).length) {
return true;
}
for (let i = 0; i < nextKeys.length; i++) {
const key = nextKeys[i];
if (nextProps[key] !== prevProps[key] &&
!isEmitListener(emitsOptions, key)) {
return true;
}
}
return false;
}
function updateHOCHostEl({ vnode, parent }, el // HostNode
) {
while (parent && parent.subTree === vnode) {
(vnode = parent.vnode).el = el;
parent = parent.parent;
}
}
const isSuspense = (type) => type.__isSuspense;
// Suspense exposes a component-like API, and is treated like a component
// in the compiler, but internally it's a special built-in type that hooks
// directly into the renderer.
const SuspenseImpl = {
name: 'Suspense',
// In order to make Suspense tree-shakable, we need to avoid importing it
// directly in the renderer. The renderer checks for the __isSuspense flag
// on a vnode's type and calls the `process` method, passing in renderer
// internals.
__isSuspense: true,
process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized,
// platform-specific impl passed from renderer
rendererInternals) {
if (n1 == null) {
mountSuspense(n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, rendererInternals);
}
else {
patchSuspense(n1, n2, container, anchor, parentComponent, isSVG, slotScopeIds, optimized, rendererInternals);
}
},
hydrate: hydrateSuspense,
create: createSuspenseBoundary,
normalize: normalizeSuspenseChildren
};
// Force-casted public typing for h and TSX props inference
const Suspense = (SuspenseImpl );
function triggerEvent(vnode, name) {
const eventListener = vnode.props && vnode.props[name];
if (shared.isFunction(eventListener)) {
eventListener();
}
}
function mountSuspense(vnode, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, rendererInternals) {
const { p: patch, o: { createElement } } = rendererInternals;
const hiddenContainer = createElement('div');
const suspense = (vnode.suspense = createSuspenseBoundary(vnode, parentSuspense, parentComponent, container, hiddenContainer, anchor, isSVG, slotScopeIds, optimized, rendererInternals));
// start mounting the content subtree in an off-dom container
patch(null, (suspense.pendingBranch = vnode.ssContent), hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds);
// now check if we have encountered any async deps
if (suspense.deps > 0) {
// has async
// invoke @fallback event
triggerEvent(vnode, 'onPending');
triggerEvent(vnode, 'onFallback');
// mount the fallback tree
patch(null, vnode.ssFallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
isSVG, slotScopeIds);
setActiveBranch(suspense, vnode.ssFallback);
}
else {
// Suspense has no async deps. Just resolve.
suspense.resolve();
}
}
function patchSuspense(n1, n2, container, anchor, parentComponent, isSVG, slotScopeIds, optimized, { p: patch, um: unmount, o: { createElement } }) {
const suspense = (n2.suspense = n1.suspense);
suspense.vnode = n2;
n2.el = n1.el;
const newBranch = n2.ssContent;
const newFallback = n2.ssFallback;
const { activeBranch, pendingBranch, isInFallback, isHydrating } = suspense;
if (pendingBranch) {
suspense.pendingBranch = newBranch;
if (isSameVNodeType(newBranch, pendingBranch)) {
// same root type but content may have changed.
patch(pendingBranch, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds, optimized);
if (suspense.deps <= 0) {
suspense.resolve();
}
else if (isInFallback) {
patch(activeBranch, newFallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
isSVG, slotScopeIds, optimized);
setActiveBranch(suspense, newFallback);
}
}
else {
// toggled before pending tree is resolved
suspense.pendingId++;
if (isHydrating) {
// if toggled before hydration is finished, the current DOM tree is
// no longer valid. set it as the active branch so it will be unmounted
// when resolved
suspense.isHydrating = false;
suspense.activeBranch = pendingBranch;
}
else {
unmount(pendingBranch, parentComponent, suspense);
}
// increment pending ID. this is used to invalidate async callbacks
// reset suspense state
suspense.deps = 0;
// discard effects from pending branch
suspense.effects.length = 0;
// discard previous container
suspense.hiddenContainer = createElement('div');
if (isInFallback) {
// already in fallback state
patch(null, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds, optimized);
if (suspense.deps <= 0) {
suspense.resolve();
}
else {
patch(activeBranch, newFallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
isSVG, slotScopeIds, optimized);
setActiveBranch(suspense, newFallback);
}
}
else if (activeBranch && isSameVNodeType(newBranch, activeBranch)) {
// toggled "back" to current active branch
patch(activeBranch, newBranch, container, anchor, parentComponent, suspense, isSVG, slotScopeIds, optimized);
// force resolve
suspense.resolve(true);
}
else {
// switched to a 3rd branch
patch(null, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds, optimized);
if (suspense.deps <= 0) {
suspense.resolve();
}
}
}
}
else {
if (activeBranch && isSameVNodeType(newBranch, activeBranch)) {
// root did not change, just normal patch
patch(activeBranch, newBranch, container, anchor, parentComponent, suspense, isSVG, slotScopeIds, optimized);
setActiveBranch(suspense, newBranch);
}
else {
// root node toggled
// invoke @pending event
triggerEvent(n2, 'onPending');
// mount pending branch in off-dom container
suspense.pendingBranch = newBranch;
suspense.pendingId++;
patch(null, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds, optimized);
if (suspense.deps <= 0) {
// incoming branch has no async deps, resolve now.
suspense.resolve();
}
else {
const { timeout, pendingId } = suspense;
if (timeout > 0) {
setTimeout(() => {
if (suspense.pendingId === pendingId) {
suspense.fallback(newFallback);
}
}, timeout);
}
else if (timeout === 0) {
suspense.fallback(newFallback);
}
}
}
}
}
function createSuspenseBoundary(vnode, parent, parentComponent, container, hiddenContainer, anchor, isSVG, slotScopeIds, optimized, rendererInternals, isHydrating = false) {
const { p: patch, m: move, um: unmount, n: next, o: { parentNode, remove } } = rendererInternals;
const timeout = shared.toNumber(vnode.props && vnode.props.timeout);
const suspense = {
vnode,
parent,
parentComponent,
isSVG,
container,
hiddenContainer,
anchor,
deps: 0,
pendingId: 0,
timeout: typeof timeout === 'number' ? timeout : -1,
activeBranch: null,
pendingBranch: null,
isInFallback: true,
isHydrating,
isUnmounted: false,
effects: [],
resolve(resume = false) {
const { vnode, activeBranch, pendingBranch, pendingId, effects, parentComponent, container } = suspense;
if (suspense.isHydrating) {
suspense.isHydrating = false;
}
else if (!resume) {
const delayEnter = activeBranch &&
pendingBranch.transition &&
pendingBranch.transition.mode === 'out-in';
if (delayEnter) {
activeBranch.transition.afterLeave = () => {
if (pendingId === suspense.pendingId) {
move(pendingBranch, container, anchor, 0 /* ENTER */);
}
};
}
// this is initial anchor on mount
let { anchor } = suspense;
// unmount current active tree
if (activeBranch) {
// if the fallback tree was mounted, it may have been moved
// as part of a parent suspense. get the latest anchor for insertion
anchor = next(activeBranch);
unmount(activeBranch, parentComponent, suspense, true);
}
if (!delayEnter) {
// move content from off-dom container to actual container
move(pendingBranch, container, anchor, 0 /* ENTER */);
}
}
setActiveBranch(suspense, pendingBranch);
suspense.pendingBranch = null;
suspense.isInFallback = false;
// flush buffered effects
// check if there is a pending parent suspense
let parent = suspense.parent;
let hasUnresolvedAncestor = false;
while (parent) {
if (parent.pendingBranch) {
// found a pending parent suspense, merge buffered post jobs
// into that parent
parent.effects.push(...effects);
hasUnresolvedAncestor = true;
break;
}
parent = parent.parent;
}
// no pending parent suspense, flush all jobs
if (!hasUnresolvedAncestor) {
queuePostFlushCb(effects);
}
suspense.effects = [];
// invoke @resolve event
triggerEvent(vnode, 'onResolve');
},
fallback(fallbackVNode) {
if (!suspense.pendingBranch) {
return;
}
const { vnode, activeBranch, parentComponent, container, isSVG } = suspense;
// invoke @fallback event
triggerEvent(vnode, 'onFallback');
const anchor = next(activeBranch);
const mountFallback = () => {
if (!suspense.isInFallback) {
return;
}
// mount the fallback tree
patch(null, fallbackVNode, container, anchor, parentComponent, null, // fallback tree will not have suspense context
isSVG, slotScopeIds, optimized);
setActiveBranch(suspense, fallbackVNode);
};
const delayEnter = fallbackVNode.transition && fallbackVNode.transition.mode === 'out-in';
if (delayEnter) {
activeBranch.transition.afterLeave = mountFallback;
}
suspense.isInFallback = true;
// unmount current active branch
unmount(activeBranch, parentComponent, null, // no suspense so unmount hooks fire now
true // shouldRemove
);
if (!delayEnter) {
mountFallback();
}
},
move(container, anchor, type) {
suspense.activeBranch &&
move(suspense.activeBranch, container, anchor, type);
suspense.container = container;
},
next() {
return suspense.activeBranch && next(suspense.activeBranch);
},
registerDep(instance, setupRenderEffect) {
const isInPendingSuspense = !!suspense.pendingBranch;
if (isInPendingSuspense) {
suspense.deps++;
}
const hydratedEl = instance.vnode.el;
instance
.asyncDep.catch(err => {
handleError(err, instance, 0 /* SETUP_FUNCTION */);
})
.then(asyncSetupResult => {
// retry when the setup() promise resolves.
// component may have been unmounted before resolve.
if (instance.isUnmounted ||
suspense.isUnmounted ||
suspense.pendingId !== instance.suspenseId) {
return;
}
// retry from this component
instance.asyncResolved = true;
const { vnode } = instance;
handleSetupResult(instance, asyncSetupResult, false);
if (hydratedEl) {
// vnode may have been replaced if an update happened before the
// async dep is resolved.
vnode.el = hydratedEl;
}
const placeholder = !hydratedEl && instance.subTree.el;
setupRenderEffect(instance, vnode,
// component may have been moved before resolve.
// if this is not a hydration, instance.subTree will be the comment
// placeholder.
parentNode(hydratedEl || instance.subTree.el),
// anchor will not be used if this is hydration, so only need to
// consider the comment placeholder case.
hydratedEl ? null : next(instance.subTree), suspense, isSVG, optimized);
if (placeholder) {
remove(placeholder);
}
updateHOCHostEl(instance, vnode.el);
// only decrease deps count if suspense is not already resolved
if (isInPendingSuspense && --suspense.deps === 0) {
suspense.resolve();
}
});
},
unmount(parentSuspense, doRemove) {
suspense.isUnmounted = true;
if (suspense.activeBranch) {
unmount(suspense.activeBranch, parentComponent, parentSuspense, doRemove);
}
if (suspense.pendingBranch) {
unmount(suspense.pendingBranch, parentComponent, parentSuspense, doRemove);
}
}
};
return suspense;
}
function hydrateSuspense(node, vnode, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, rendererInternals, hydrateNode) {
/* eslint-disable no-restricted-globals */
const suspense = (vnode.suspense = createSuspenseBoundary(vnode, parentSuspense, parentComponent, node.parentNode, document.createElement('div'), null, isSVG, slotScopeIds, optimized, rendererInternals, true /* hydrating */));
// there are two possible scenarios for server-rendered suspense:
// - success: ssr content should be fully resolved
// - failure: ssr content should be the fallback branch.
// however, on the client we don't really know if it has failed or not
// attempt to hydrate the DOM assuming it has succeeded, but we still
// need to construct a suspense boundary first
const result = hydrateNode(node, (suspense.pendingBranch = vnode.ssContent), parentComponent, suspense, slotScopeIds, optimized);
if (suspense.deps === 0) {
suspense.resolve();
}
return result;
/* eslint-enable no-restricted-globals */
}
function normalizeSuspenseChildren(vnode) {
const { shapeFlag, children } = vnode;
const isSlotChildren = shapeFlag & 32 /* SLOTS_CHILDREN */;
vnode.ssContent = normalizeSuspenseSlot(isSlotChildren ? children.default : children);
vnode.ssFallback = isSlotChildren
? normalizeSuspenseSlot(children.fallback)
: createVNode(Comment);
}
function normalizeSuspenseSlot(s) {
let block;
if (shared.isFunction(s)) {
const trackBlock = isBlockTreeEnabled && s._c;
if (trackBlock) {
// disableTracking: false
// allow block tracking for compiled slots
// (see ./componentRenderContext.ts)
s._d = false;
openBlock();
}
s = s();
if (trackBlock) {
s._d = true;
block = currentBlock;
closeBlock();
}
}
if (shared.isArray(s)) {
const singleChild = filterSingleRoot(s);
s = singleChild;
}
s = normalizeVNode(s);
if (block && !s.dynamicChildren) {
s.dynamicChildren = block.filter(c => c !== s);
}
return s;
}
function queueEffectWithSuspense(fn, suspense) {
if (suspense && suspense.pendingBranch) {
if (shared.isArray(fn)) {
suspense.effects.push(...fn);
}
else {
suspense.effects.push(fn);
}
}
else {
queuePostFlushCb(fn);
}
}
function setActiveBranch(suspense, branch) {
suspense.activeBranch = branch;
const { vnode, parentComponent } = suspense;
const el = (vnode.el = branch.el);
// in case suspense is the root node of a component,
// recursively update the HOC el
if (parentComponent && parentComponent.subTree === vnode) {
parentComponent.vnode.el = el;
updateHOCHostEl(parentComponent, el);
}
}
function provide(key, value) {
if (!currentInstance) ;
else {
let provides = currentInstance.provides;
// by default an instance inherits its parent's provides object
// but when it needs to provide values of its own, it creates its
// own provides object using parent provides object as prototype.
// this way in `inject` we can simply look up injections from direct
// parent and let the prototype chain do the work.
const parentProvides = currentInstance.parent && currentInstance.parent.provides;
if (parentProvides === provides) {
provides = currentInstance.provides = Object.create(parentProvides);
}
// TS doesn't allow symbol as index type
provides[key] = value;
}
}
function inject(key, defaultValue, treatDefaultAsFactory = false) {
// fallback to `currentRenderingInstance` so that this can be called in
// a functional component
const instance = currentInstance || currentRenderingInstance;
if (instance) {
// #2400
// to support `app.use` plugins,
// fallback to appContext's `provides` if the instance is at root
const provides = instance.parent == null
? instance.vnode.appContext && instance.vnode.appContext.provides
: instance.parent.provides;
if (provides && key in provides) {
// TS doesn't allow symbol as index type
return provides[key];
}
else if (arguments.length > 1) {
return treatDefaultAsFactory && shared.isFunction(defaultValue)
? defaultValue.call(instance.proxy)
: defaultValue;
}
else ;
}
}
// Simple effect.
function watchEffect(effect, options) {
return doWatch(effect, null, options);
}
function watchPostEffect(effect, options) {
return doWatch(effect, null, ({ flush: 'post' }));
}
function watchSyncEffect(effect, options) {
return doWatch(effect, null, ({ flush: 'sync' }));
}
// initial value for watchers to trigger on undefined initial values
const INITIAL_WATCHER_VALUE = {};
// implementation
function watch(source, cb, options) {
return doWatch(source, cb, options);
}
function doWatch(source, cb, { immediate, deep, flush, onTrack, onTrigger } = shared.EMPTY_OBJ) {
const instance = currentInstance;
let getter;
let forceTrigger = false;
let isMultiSource = false;
if (reactivity.isRef(source)) {
getter = () => source.value;
forceTrigger = reactivity.isShallow(source);
}
else if (reactivity.isReactive(source)) {
getter = () => source;
deep = true;
}
else if (shared.isArray(source)) {
isMultiSource = true;
forceTrigger = source.some(s => reactivity.isReactive(s) || reactivity.isShallow(s));
getter = () => source.map(s => {
if (reactivity.isRef(s)) {
return s.value;
}
else if (reactivity.isReactive(s)) {
return traverse(s);
}
else if (shared.isFunction(s)) {
return callWithErrorHandling(s, instance, 2 /* WATCH_GETTER */);
}
else ;
});
}
else if (shared.isFunction(source)) {
if (cb) {
// getter with cb
getter = () => callWithErrorHandling(source, instance, 2 /* WATCH_GETTER */);
}
else {
// no cb -> simple effect
getter = () => {
if (instance && instance.isUnmounted) {
return;
}
if (cleanup) {
cleanup();
}
return callWithAsyncErrorHandling(source, instance, 3 /* WATCH_CALLBACK */, [onCleanup]);
};
}
}
else {
getter = shared.NOOP;
}
if (cb && deep) {
const baseGetter = getter;
getter = () => traverse(baseGetter());
}
let cleanup;
let onCleanup = (fn) => {
cleanup = effect.onStop = () => {
callWithErrorHandling(fn, instance, 4 /* WATCH_CLEANUP */);
};
};
// in SSR there is no need to setup an actual effect, and it should be noop
// unless it's eager
if (isInSSRComponentSetup) {
// we will also not call the invalidate callback (+ runner is not set up)
onCleanup = shared.NOOP;
if (!cb) {
getter();
}
else if (immediate) {
callWithAsyncErrorHandling(cb, instance, 3 /* WATCH_CALLBACK */, [
getter(),
isMultiSource ? [] : undefined,
onCleanup
]);
}
return shared.NOOP;
}
let oldValue = isMultiSource ? [] : INITIAL_WATCHER_VALUE;
const job = () => {
if (!effect.active) {
return;
}
if (cb) {
// watch(source, cb)
const newValue = e