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3x 3x 2x 2x 2x 2x 2x 2x 2x 3x 3x 6x 6x 6x 6x 158x 55x 55x 55x 2x 55x 2x 2x 55x 4x 2x 2x 2x 2x 2x 2x 2x 2x 2x 4x 4x 55x 158x 79x 79x 2x 2x 2x 2x 79x 78x 78x 94x 94x 93x 89x 94x 7x 7x 94x 94x 16x 90x 68x 67x 94x 28x 28x 94x 79x 1x 1x 1x 79x 158x 158x 158x 8x 8x 158x 158x 158x 150x 158x 11x 11x 11x 11x 11x 11x 158x 158x 158x 4x 74x 74x 74x 74x 74x 74x 74x 74x 74x 74x 74x 74x 74x 117x 27x 90x 117x 117x 108x 12x 5x 5x 5x 5x 5x 5x 5x 5x 5x 12x 108x 108x 108x 108x 108x 108x 108x 108x 117x 2x 9x 7x 5x 5x 5x 5x 4x 4x 4x 4x 4x 4x 4x 5x 5x 7x 7x 7x 7x 7x 7x 7x 7x 7x 7x 7x 117x 74x 74x 4x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 14x 18x 4x 4x 4x 4x 18x 4x 13x 13x 13x 13x 13x 13x 13x 13x 6x 6x 6x 6x 6x 1x 5x 1x 4x 6x 6x 6x 6x 6x 13x 13x 2x 2x 8x 8x 6x 8x 2x 2x 8x 2x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 4x 24x 24x 24x 24x 24x 24x 59x 59x 36x 36x 26x 24x 26x 2x 2x 26x 36x 59x 24x 4x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 18x 18x 18x 18x 18x 6x 4x 179x 179x 170x 179x 4x 4x 89x 89x 89x 89x 89x 89x 89x 89x 89x 89x 89x 89x 23x 23x 23x 2x 2x 2x 89x 14x 14x 7x 7x 14x 14x 14x 3x 3x 3x 3x 3x 3x 14x 14x 14x 14x 4x 4x 4x 14x 52x 52x 52x 22x 5x 5x 22x 4x 4x 17x 13x 7x 13x 3x 3x 3x 3x 13x 12x 1x 13x 22x 5x 5x 5x 22x 89x 7x 14x 7x 7x 7x 7x 7x 7x 7x 7x 7x 82x 82x 46x 46x 46x 23x 23x 2x 2x 23x 26x 26x 21x 21x 28x 28x 28x 56x 56x 56x 56x 34x 34x 56x 28x 28x 14x 14x 2x 2x 14x 18x 2x 2x 18x 10x 10x 16x 16x 16x 16x 16x 16x 16x 16x 4x 1x 1x 16x 3x 3x 3x 3x 3x 3x 3x 3x 16x 2x 2x 16x 2x 92x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 41x 41x 41x 41x 41x 41x 37x 41x 30x 37x 37x 30x 41x 41x 23x 41x 1x 18x 17x 17x 1x 1x 16x 16x 41x | import {
Fragment,
Static,
Text,
Comment as VComment,
type VNode,
type VNodeHook,
createTextVNode,
createVNode,
invokeVNodeHook,
normalizeVNode,
} from './vnode'
import { flushPostFlushCbs } from './scheduler'
import type { ComponentInternalInstance, ComponentOptions } from './component'
import { invokeDirectiveHook } from './directives'
import { warn } from './warning'
import {
PatchFlags,
ShapeFlags,
def,
getEscapedCssVarName,
includeBooleanAttr,
isBooleanAttr,
isKnownHtmlAttr,
isKnownSvgAttr,
isOn,
isRenderableAttrValue,
isReservedProp,
isString,
normalizeClass,
normalizeStyle,
stringifyStyle,
} from '@vue/shared'
import { type RendererInternals, needTransition } from './renderer'
import { setRef } from './rendererTemplateRef'
import {
type SuspenseBoundary,
type SuspenseImpl,
queueEffectWithSuspense,
} from './components/Suspense'
import type { TeleportImpl, TeleportVNode } from './components/Teleport'
import { isAsyncWrapper } from './apiAsyncComponent'
import { isReactive } from '@vue/reactivity'
import { updateHOCHostEl } from './componentRenderUtils'
export type RootHydrateFunction = (
vnode: VNode<Node, Element>,
container: (Element | ShadowRoot) & { _vnode?: VNode },
) => void
export enum DOMNodeTypes {
ELEMENT = 1,
TEXT = 3,
COMMENT = 8,
}
let hasLoggedMismatchError = false
const logMismatchError = () => {
if (__TEST__ || hasLoggedMismatchError) {
return
}
// this error should show up in production
console.error('Hydration completed but contains mismatches.')
hasLoggedMismatchError = true
}
const isSVGContainer = (container: Element) =>
container.namespaceURI!.includes('svg') &&
container.tagName !== 'foreignObject'
const isMathMLContainer = (container: Element) =>
container.namespaceURI!.includes('MathML')
const getContainerType = (
container: Element | ShadowRoot,
): 'svg' | 'mathml' | undefined => {
if (container.nodeType !== DOMNodeTypes.ELEMENT) return undefined
if (isSVGContainer(container as Element)) return 'svg'
if (isMathMLContainer(container as Element)) return 'mathml'
return undefined
}
export const isComment = (node: Node): node is Comment =>
node.nodeType === DOMNodeTypes.COMMENT
// Note: hydration is DOM-specific
// But we have to place it in core due to tight coupling with core - splitting
// it out creates a ton of unnecessary complexity.
// Hydration also depends on some renderer internal logic which needs to be
// passed in via arguments.
export function createHydrationFunctions(
rendererInternals: RendererInternals<Node, Element>,
): [
RootHydrateFunction,
(
node: Node,
vnode: VNode,
parentComponent: ComponentInternalInstance | null,
parentSuspense: SuspenseBoundary | null,
slotScopeIds: string[] | null,
optimized?: boolean,
) => Node | null,
] {
const {
mt: mountComponent,
p: patch,
o: {
patchProp,
createText,
nextSibling,
parentNode,
remove,
insert,
createComment,
},
} = rendererInternals
const hydrate: RootHydrateFunction = (vnode, container) => {
if (!container.hasChildNodes()) {
;(__DEV__ || __FEATURE_PROD_HYDRATION_MISMATCH_DETAILS__) &&
warn(
`Attempting to hydrate existing markup but container is empty. ` +
`Performing full mount instead.`,
)
patch(null, vnode, container)
flushPostFlushCbs()
container._vnode = vnode
return
}
hydrateNode(container.firstChild!, vnode, null, null, null)
flushPostFlushCbs()
container._vnode = vnode
}
const hydrateNode = (
node: Node,
vnode: VNode,
parentComponent: ComponentInternalInstance | null,
parentSuspense: SuspenseBoundary | null,
slotScopeIds: string[] | null,
optimized = false,
): Node | null => {
optimized = optimized || !!vnode.dynamicChildren
const isFragmentStart = isComment(node) && node.data === '['
const onMismatch = () =>
handleMismatch(
node,
vnode,
parentComponent,
parentSuspense,
slotScopeIds,
isFragmentStart,
)
const { type, ref, shapeFlag, patchFlag } = vnode
let domType = node.nodeType
vnode.el = node
if (__DEV__ || __FEATURE_PROD_DEVTOOLS__) {
def(node, '__vnode', vnode, true)
def(node, '__vueParentComponent', parentComponent, true)
}
if (patchFlag === PatchFlags.BAIL) {
optimized = false
vnode.dynamicChildren = null
}
let nextNode: Node | null = null
switch (type) {
case Text:
if (domType !== DOMNodeTypes.TEXT) {
// #5728 empty text node inside a slot can cause hydration failure
// because the server rendered HTML won't contain a text node
if (vnode.children === '') {
insert((vnode.el = createText('')), parentNode(node)!, node)
nextNode = node
} else {
nextNode = onMismatch()
}
} else {
if ((node as Text).data !== vnode.children) {
;(__DEV__ || __FEATURE_PROD_HYDRATION_MISMATCH_DETAILS__) &&
warn(
`Hydration text mismatch in`,
node.parentNode,
`\n - rendered on server: ${JSON.stringify(
(node as Text).data,
)}` +
`\n - expected on client: ${JSON.stringify(vnode.children)}`,
)
logMismatchError()
;(node as Text).data = vnode.children as string
}
nextNode = nextSibling(node)
}
break
case VComment:
if (isTemplateNode(node)) {
nextNode = nextSibling(node)
// wrapped <transition appear>
// replace <template> node with inner child
replaceNode(
(vnode.el = node.content.firstChild!),
node,
parentComponent,
)
} else if (domType !== DOMNodeTypes.COMMENT || isFragmentStart) {
nextNode = onMismatch()
} else {
nextNode = nextSibling(node)
}
break
case Static:
if (isFragmentStart) {
// entire template is static but SSRed as a fragment
node = nextSibling(node)!
domType = node.nodeType
}
if (domType === DOMNodeTypes.ELEMENT || domType === DOMNodeTypes.TEXT) {
// determine anchor, adopt content
nextNode = node
// if the static vnode has its content stripped during build,
// adopt it from the server-rendered HTML.
const needToAdoptContent = !(vnode.children as string).length
for (let i = 0; i < vnode.staticCount!; i++) {
if (needToAdoptContent)
vnode.children +=
nextNode.nodeType === DOMNodeTypes.ELEMENT
? (nextNode as Element).outerHTML
: (nextNode as Text).data
if (i === vnode.staticCount! - 1) {
vnode.anchor = nextNode
}
nextNode = nextSibling(nextNode)!
}
return isFragmentStart ? nextSibling(nextNode) : nextNode
} else {
onMismatch()
}
break
case Fragment:
if (!isFragmentStart) {
nextNode = onMismatch()
} else {
nextNode = hydrateFragment(
node as Comment,
vnode,
parentComponent,
parentSuspense,
slotScopeIds,
optimized,
)
}
break
default:
if (shapeFlag & ShapeFlags.ELEMENT) {
if (
(domType !== DOMNodeTypes.ELEMENT ||
(vnode.type as string).toLowerCase() !==
(node as Element).tagName.toLowerCase()) &&
!isTemplateNode(node)
) {
nextNode = onMismatch()
} else {
nextNode = hydrateElement(
node as Element,
vnode,
parentComponent,
parentSuspense,
slotScopeIds,
optimized,
)
}
} else if (shapeFlag & ShapeFlags.COMPONENT) {
// when setting up the render effect, if the initial vnode already
// has .el set, the component will perform hydration instead of mount
// on its sub-tree.
vnode.slotScopeIds = slotScopeIds
const container = parentNode(node)!
// Locate the next node.
if (isFragmentStart) {
// If it's a fragment: since components may be async, we cannot rely
// on component's rendered output to determine the end of the
// fragment. Instead, we do a lookahead to find the end anchor node.
nextNode = locateClosingAnchor(node)
} else if (isComment(node) && node.data === 'teleport start') {
// #4293 #6152
// If a teleport is at component root, look ahead for teleport end.
nextNode = locateClosingAnchor(node, node.data, 'teleport end')
} else {
nextNode = nextSibling(node)
}
mountComponent(
vnode,
container,
null,
parentComponent,
parentSuspense,
getContainerType(container),
optimized,
)
// #3787
// if component is async, it may get moved / unmounted before its
// inner component is loaded, so we need to give it a placeholder
// vnode that matches its adopted DOM.
if (
isAsyncWrapper(vnode) &&
!(vnode.type as ComponentOptions).__asyncResolved
) {
let subTree
if (isFragmentStart) {
subTree = createVNode(Fragment)
subTree.anchor = nextNode
? nextNode.previousSibling
: container.lastChild
} else {
subTree =
node.nodeType === 3 ? createTextVNode('') : createVNode('div')
}
subTree.el = node
vnode.component!.subTree = subTree
}
} else if (shapeFlag & ShapeFlags.TELEPORT) {
if (domType !== DOMNodeTypes.COMMENT) {
nextNode = onMismatch()
} else {
nextNode = (vnode.type as typeof TeleportImpl).hydrate(
node,
vnode as TeleportVNode,
parentComponent,
parentSuspense,
slotScopeIds,
optimized,
rendererInternals,
hydrateChildren,
)
}
} else if (__FEATURE_SUSPENSE__ && shapeFlag & ShapeFlags.SUSPENSE) {
nextNode = (vnode.type as typeof SuspenseImpl).hydrate(
node,
vnode,
parentComponent,
parentSuspense,
getContainerType(parentNode(node)!),
slotScopeIds,
optimized,
rendererInternals,
hydrateNode,
)
} else if (__DEV__ || __FEATURE_PROD_HYDRATION_MISMATCH_DETAILS__) {
warn('Invalid HostVNode type:', type, `(${typeof type})`)
}
}
if (ref != null) {
setRef(ref, null, parentSuspense, vnode)
}
return nextNode
}
const hydrateElement = (
el: Element,
vnode: VNode,
parentComponent: ComponentInternalInstance | null,
parentSuspense: SuspenseBoundary | null,
slotScopeIds: string[] | null,
optimized: boolean,
) => {
optimized = optimized || !!vnode.dynamicChildren
const { type, props, patchFlag, shapeFlag, dirs, transition } = vnode
// #4006 for form elements with non-string v-model value bindings
// e.g. <option :value="obj">, <input type="checkbox" :true-value="1">
// #7476 <input indeterminate>
const forcePatch = type === 'input' || type === 'option'
// skip props & children if this is hoisted static nodes
// #5405 in dev, always hydrate children for HMR
if (__DEV__ || forcePatch || patchFlag !== PatchFlags.CACHED) {
if (dirs) {
invokeDirectiveHook(vnode, null, parentComponent, 'created')
}
// handle appear transition
let needCallTransitionHooks = false
if (isTemplateNode(el)) {
needCallTransitionHooks =
needTransition(
null, // no need check parentSuspense in hydration
transition,
) &&
parentComponent &&
parentComponent.vnode.props &&
parentComponent.vnode.props.appear
const content = (el as HTMLTemplateElement).content
.firstChild as Element
if (needCallTransitionHooks) {
transition!.beforeEnter(content)
}
// replace <template> node with inner children
replaceNode(content, el, parentComponent)
vnode.el = el = content
}
// children
if (
shapeFlag & ShapeFlags.ARRAY_CHILDREN &&
// skip if element has innerHTML / textContent
!(props && (props.innerHTML || props.textContent))
) {
let next = hydrateChildren(
el.firstChild,
vnode,
el,
parentComponent,
parentSuspense,
slotScopeIds,
optimized,
)
let hasWarned = false
while (next) {
if (!isMismatchAllowed(el, MismatchTypes.CHILDREN)) {
if (
(__DEV__ || __FEATURE_PROD_HYDRATION_MISMATCH_DETAILS__) &&
!hasWarned
) {
warn(
`Hydration children mismatch on`,
el,
`\nServer rendered element contains more child nodes than client vdom.`,
)
hasWarned = true
}
logMismatchError()
}
// The SSRed DOM contains more nodes than it should. Remove them.
const cur = next
next = next.nextSibling
remove(cur)
}
} else if (shapeFlag & ShapeFlags.TEXT_CHILDREN) {
// #11873 the HTML parser will "eat" the first newline when parsing
// <pre> and <textarea>, so if the client value starts with a newline,
// we need to remove it before comparing
let clientText = vnode.children as string
if (
clientText[0] === '\n' &&
(el.tagName === 'PRE' || el.tagName === 'TEXTAREA')
) {
clientText = clientText.slice(1)
}
if (el.textContent !== clientText) {
if (!isMismatchAllowed(el, MismatchTypes.TEXT)) {
;(__DEV__ || __FEATURE_PROD_HYDRATION_MISMATCH_DETAILS__) &&
warn(
`Hydration text content mismatch on`,
el,
`\n - rendered on server: ${el.textContent}` +
`\n - expected on client: ${vnode.children as string}`,
)
logMismatchError()
}
el.textContent = vnode.children as string
}
}
// props
if (props) {
if (
__DEV__ ||
__FEATURE_PROD_HYDRATION_MISMATCH_DETAILS__ ||
forcePatch ||
!optimized ||
patchFlag & (PatchFlags.FULL_PROPS | PatchFlags.NEED_HYDRATION)
) {
const isCustomElement = el.tagName.includes('-')
for (const key in props) {
// check hydration mismatch
if (
(__DEV__ || __FEATURE_PROD_HYDRATION_MISMATCH_DETAILS__) &&
// #11189 skip if this node has directives that have created hooks
// as it could have mutated the DOM in any possible way
!(dirs && dirs.some(d => d.dir.created)) &&
propHasMismatch(el, key, props[key], vnode, parentComponent)
) {
logMismatchError()
}
if (
(forcePatch &&
(key.endsWith('value') || key === 'indeterminate')) ||
(isOn(key) && !isReservedProp(key)) ||
// force hydrate v-bind with .prop modifiers
key[0] === '.' ||
isCustomElement
) {
patchProp(el, key, null, props[key], undefined, parentComponent)
}
}
} else if (props.onClick) {
// Fast path for click listeners (which is most often) to avoid
// iterating through props.
patchProp(
el,
'onClick',
null,
props.onClick,
undefined,
parentComponent,
)
} else if (patchFlag & PatchFlags.STYLE && isReactive(props.style)) {
// #11372: object style values are iterated during patch instead of
// render/normalization phase, but style patch is skipped during
// hydration, so we need to force iterate the object to track deps
for (const key in props.style) props.style[key]
}
}
// vnode / directive hooks
let vnodeHooks: VNodeHook | null | undefined
if ((vnodeHooks = props && props.onVnodeBeforeMount)) {
invokeVNodeHook(vnodeHooks, parentComponent, vnode)
}
if (dirs) {
invokeDirectiveHook(vnode, null, parentComponent, 'beforeMount')
}
if (
(vnodeHooks = props && props.onVnodeMounted) ||
dirs ||
needCallTransitionHooks
) {
queueEffectWithSuspense(() => {
vnodeHooks && invokeVNodeHook(vnodeHooks, parentComponent, vnode)
needCallTransitionHooks && transition!.enter(el)
dirs && invokeDirectiveHook(vnode, null, parentComponent, 'mounted')
}, parentSuspense)
}
}
return el.nextSibling
}
const hydrateChildren = (
node: Node | null,
parentVNode: VNode,
container: Element,
parentComponent: ComponentInternalInstance | null,
parentSuspense: SuspenseBoundary | null,
slotScopeIds: string[] | null,
optimized: boolean,
): Node | null => {
optimized = optimized || !!parentVNode.dynamicChildren
const children = parentVNode.children as VNode[]
const l = children.length
let hasWarned = false
for (let i = 0; i < l; i++) {
const vnode = optimized
? children[i]
: (children[i] = normalizeVNode(children[i]))
const isText = vnode.type === Text
if (node) {
if (isText && !optimized) {
// #7285 possible consecutive text vnodes from manual render fns or
// JSX-compiled fns, but on the client the browser parses only 1 text
// node.
// look ahead for next possible text vnode
if (i + 1 < l && normalizeVNode(children[i + 1]).type === Text) {
// create an extra TextNode on the client for the next vnode to
// adopt
insert(
createText(
(node as Text).data.slice((vnode.children as string).length),
),
container,
nextSibling(node),
)
;(node as Text).data = vnode.children as string
}
}
node = hydrateNode(
node,
vnode,
parentComponent,
parentSuspense,
slotScopeIds,
optimized,
)
} else if (isText && !vnode.children) {
// #7215 create a TextNode for empty text node
// because server rendered HTML won't contain a text node
insert((vnode.el = createText('')), container)
} else {
if (!isMismatchAllowed(container, MismatchTypes.CHILDREN)) {
if (
(__DEV__ || __FEATURE_PROD_HYDRATION_MISMATCH_DETAILS__) &&
!hasWarned
) {
warn(
`Hydration children mismatch on`,
container,
`\nServer rendered element contains fewer child nodes than client vdom.`,
)
hasWarned = true
}
logMismatchError()
}
// the SSRed DOM didn't contain enough nodes. Mount the missing ones.
patch(
null,
vnode,
container,
null,
parentComponent,
parentSuspense,
getContainerType(container),
slotScopeIds,
)
}
}
return node
}
const hydrateFragment = (
node: Comment,
vnode: VNode,
parentComponent: ComponentInternalInstance | null,
parentSuspense: SuspenseBoundary | null,
slotScopeIds: string[] | null,
optimized: boolean,
) => {
const { slotScopeIds: fragmentSlotScopeIds } = vnode
if (fragmentSlotScopeIds) {
slotScopeIds = slotScopeIds
? slotScopeIds.concat(fragmentSlotScopeIds)
: fragmentSlotScopeIds
}
const container = parentNode(node)!
const next = hydrateChildren(
nextSibling(node)!,
vnode,
container,
parentComponent,
parentSuspense,
slotScopeIds,
optimized,
)
if (next && isComment(next) && next.data === ']') {
return nextSibling((vnode.anchor = next))
} else {
// fragment didn't hydrate successfully, since we didn't get a end anchor
// back. This should have led to node/children mismatch warnings.
logMismatchError()
// since the anchor is missing, we need to create one and insert it
insert((vnode.anchor = createComment(`]`)), container, next)
return next
}
}
const handleMismatch = (
node: Node,
vnode: VNode,
parentComponent: ComponentInternalInstance | null,
parentSuspense: SuspenseBoundary | null,
slotScopeIds: string[] | null,
isFragment: boolean,
): Node | null => {
if (!isMismatchAllowed(node.parentElement!, MismatchTypes.CHILDREN)) {
;(__DEV__ || __FEATURE_PROD_HYDRATION_MISMATCH_DETAILS__) &&
warn(
`Hydration node mismatch:\n- rendered on server:`,
node,
node.nodeType === DOMNodeTypes.TEXT
? `(text)`
: isComment(node) && node.data === '['
? `(start of fragment)`
: ``,
`\n- expected on client:`,
vnode.type,
)
logMismatchError()
}
vnode.el = null
if (isFragment) {
// remove excessive fragment nodes
const end = locateClosingAnchor(node)
while (true) {
const next = nextSibling(node)
if (next && next !== end) {
remove(next)
} else {
break
}
}
}
const next = nextSibling(node)
const container = parentNode(node)!
remove(node)
patch(
null,
vnode,
container,
next,
parentComponent,
parentSuspense,
getContainerType(container),
slotScopeIds,
)
// the component vnode's el should be updated when a mismatch occurs.
if (parentComponent) {
parentComponent.vnode.el = vnode.el
updateHOCHostEl(parentComponent, vnode.el)
}
return next
}
// looks ahead for a start and closing comment node
const locateClosingAnchor = (
node: Node | null,
open = '[',
close = ']',
): Node | null => {
let match = 0
while (node) {
node = nextSibling(node)
if (node && isComment(node)) {
if (node.data === open) match++
if (node.data === close) {
if (match === 0) {
return nextSibling(node)
} else {
match--
}
}
}
}
return node
}
const replaceNode = (
newNode: Node,
oldNode: Node,
parentComponent: ComponentInternalInstance | null,
): void => {
// replace node
const parentNode = oldNode.parentNode
if (parentNode) {
parentNode.replaceChild(newNode, oldNode)
}
// update vnode
let parent = parentComponent
while (parent) {
if (parent.vnode.el === oldNode) {
parent.vnode.el = parent.subTree.el = newNode
}
parent = parent.parent
}
}
const isTemplateNode = (node: Node): node is HTMLTemplateElement => {
return (
node.nodeType === DOMNodeTypes.ELEMENT &&
(node as Element).tagName === 'TEMPLATE'
)
}
return [hydrate, hydrateNode]
}
/**
* Dev only
*/
function propHasMismatch(
el: Element,
key: string,
clientValue: any,
vnode: VNode,
instance: ComponentInternalInstance | null,
): boolean {
let mismatchType: MismatchTypes | undefined
let mismatchKey: string | undefined
let actual: string | boolean | null | undefined
let expected: string | boolean | null | undefined
if (key === 'class') {
// classes might be in different order, but that doesn't affect cascade
// so we just need to check if the class lists contain the same classes.
actual = el.getAttribute('class')
expected = normalizeClass(clientValue)
if (!isSetEqual(toClassSet(actual || ''), toClassSet(expected))) {
mismatchType = MismatchTypes.CLASS
mismatchKey = `class`
}
} else if (key === 'style') {
// style might be in different order, but that doesn't affect cascade
actual = el.getAttribute('style') || ''
expected = isString(clientValue)
? clientValue
: stringifyStyle(normalizeStyle(clientValue))
const actualMap = toStyleMap(actual)
const expectedMap = toStyleMap(expected)
// If `v-show=false`, `display: 'none'` should be added to expected
if (vnode.dirs) {
for (const { dir, value } of vnode.dirs) {
// @ts-expect-error only vShow has this internal name
if (dir.name === 'show' && !value) {
expectedMap.set('display', 'none')
}
}
}
if (instance) {
resolveCssVars(instance, vnode, expectedMap)
}
if (!isMapEqual(actualMap, expectedMap)) {
mismatchType = MismatchTypes.STYLE
mismatchKey = 'style'
}
} else if (
(el instanceof SVGElement && isKnownSvgAttr(key)) ||
(el instanceof HTMLElement && (isBooleanAttr(key) || isKnownHtmlAttr(key)))
) {
if (isBooleanAttr(key)) {
actual = el.hasAttribute(key)
expected = includeBooleanAttr(clientValue)
} else if (clientValue == null) {
actual = el.hasAttribute(key)
expected = false
} else {
if (el.hasAttribute(key)) {
actual = el.getAttribute(key)
} else if (key === 'value' && el.tagName === 'TEXTAREA') {
// #10000 textarea.value can't be retrieved by `hasAttribute`
actual = (el as HTMLTextAreaElement).value
} else {
actual = false
}
expected = isRenderableAttrValue(clientValue)
? String(clientValue)
: false
}
if (actual !== expected) {
mismatchType = MismatchTypes.ATTRIBUTE
mismatchKey = key
}
}
if (mismatchType != null && !isMismatchAllowed(el, mismatchType)) {
const format = (v: any) =>
v === false ? `(not rendered)` : `${mismatchKey}="${v}"`
const preSegment = `Hydration ${MismatchTypeString[mismatchType]} mismatch on`
const postSegment =
`\n - rendered on server: ${format(actual)}` +
`\n - expected on client: ${format(expected)}` +
`\n Note: this mismatch is check-only. The DOM will not be rectified ` +
`in production due to performance overhead.` +
`\n You should fix the source of the mismatch.`
if (__TEST__) {
// during tests, log the full message in one single string for easier
// debugging.
warn(`${preSegment} ${el.tagName}${postSegment}`)
} else {
warn(preSegment, el, postSegment)
}
return true
}
return false
}
function toClassSet(str: string): Set<string> {
return new Set(str.trim().split(/\s+/))
}
function isSetEqual(a: Set<string>, b: Set<string>): boolean {
if (a.size !== b.size) {
return false
}
for (const s of a) {
if (!b.has(s)) {
return false
}
}
return true
}
function toStyleMap(str: string): Map<string, string> {
const styleMap: Map<string, string> = new Map()
for (const item of str.split(';')) {
let [key, value] = item.split(':')
key = key.trim()
value = value && value.trim()
if (key && value) {
styleMap.set(key, value)
}
}
return styleMap
}
function isMapEqual(a: Map<string, string>, b: Map<string, string>): boolean {
if (a.size !== b.size) {
return false
}
for (const [key, value] of a) {
if (value !== b.get(key)) {
return false
}
}
return true
}
function resolveCssVars(
instance: ComponentInternalInstance,
vnode: VNode,
expectedMap: Map<string, string>,
) {
const root = instance.subTree
if (
instance.getCssVars &&
(vnode === root ||
(root &&
root.type === Fragment &&
(root.children as VNode[]).includes(vnode)))
) {
const cssVars = instance.getCssVars()
for (const key in cssVars) {
expectedMap.set(
`--${getEscapedCssVarName(key, false)}`,
String(cssVars[key]),
)
}
}
if (vnode === root && instance.parent) {
resolveCssVars(instance.parent, instance.vnode, expectedMap)
}
}
const allowMismatchAttr = 'data-allow-mismatch'
enum MismatchTypes {
TEXT = 0,
CHILDREN = 1,
CLASS = 2,
STYLE = 3,
ATTRIBUTE = 4,
}
const MismatchTypeString: Record<MismatchTypes, string> = {
[MismatchTypes.TEXT]: 'text',
[MismatchTypes.CHILDREN]: 'children',
[MismatchTypes.CLASS]: 'class',
[MismatchTypes.STYLE]: 'style',
[MismatchTypes.ATTRIBUTE]: 'attribute',
} as const
function isMismatchAllowed(
el: Element | null,
allowedType: MismatchTypes,
): boolean {
if (
allowedType === MismatchTypes.TEXT ||
allowedType === MismatchTypes.CHILDREN
) {
while (el && !el.hasAttribute(allowMismatchAttr)) {
el = el.parentElement
}
}
const allowedAttr = el && el.getAttribute(allowMismatchAttr)
if (allowedAttr == null) {
return false
} else if (allowedAttr === '') {
return true
} else {
const list = allowedAttr.split(',')
// text is a subset of children
if (allowedType === MismatchTypes.TEXT && list.includes('children')) {
return true
}
return allowedAttr.split(',').includes(MismatchTypeString[allowedType])
}
}
|