Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 | 3x 3x 3x 69x 69x 69x 69x 69x 69x 69x 69x 69x 88x 88x 69x 69x 69x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 88x 88x 88x 88x 88x 88x 88x 88x 88x 76x 76x 76x 76x 76x 76x 88x 12x 12x 88x 88x 3x 95x 95x 12x 12x 92x 92x 92x 95x 95x 328x 19x 19x 19x 328x 95x 90x 2x 90x 88x 3x 3x 3x 3x 88x 85x 85x 88x 90x 95x 3x 92x 19x 19x 19x 92x 3x 109x 38x 38x 38x 38x 38x 109x 3x 90x 90x 90x 85x 84x 84x 84x 85x 85x 85x 85x 4x 4x 4x 85x 90x 90x 3x 75x 26x 26x 75x 3x 88x 88x 16x 16x 88x 88x 88x 88x 88x 88x 88x 88x 28x 47x 47x 5x 4x 4x 5x 5x 5x 5x 47x 28x 88x 88x 88x 76x 88x 88x 88x 88x 88x 13x 13x 13x 13x 88x 75x 75x 88x 3x 90x 67x 67x 90x 90x 90x 5x 5x 90x 90x 90x 90x 89x 4x 3x 3x 3x 4x 1x 1x 4x 90x 3x 88x 88x 88x 1455x 15x 15x 1455x 88x 53x 53x 8x 8x 53x 24x 24x 53x 53x 88x 3x 42x 30x 42x 42x 42x 1x 1x 30x 42x 3x 8x 8x 3x 81x 81x 81x 81x 81x 81x 80x 80x 3x 80x 77x 77x 77x 80x 29x 29x 80x 50x 50x 50x 50x 50x 50x 6x 50x 32x 44x 6x 6x 50x 50x 80x 81x 3x 37x 37x 37x 37x 3x 127x 127x 15x 15x 15x 127x 127x 92x 92x 92x 92x 92x 92x 2x 1x 1x 1x 2x 2x 2x 2x 92x 92x 12x 12x 12x 12x 1x 11x 12x 12x 12x 92x 11x 11x 1x 1x 11x 92x 92x 92x 127x 127x 3x 165x 165x 165x 165x 165x 13x 10x 10x 3x 3x 10x 164x 13x 13x 13x 13x 13x 13x 5x 5x 5x 5x 1x 1x 5x 5x 13x 8x 8x 13x 13x 165x 3x 12x 12x 12x 16x 16x 16x 16x 16x 12x 3x 16x 16x 16x 16x 16x 16x 16x 16x 15x 20x 20x 20x 16x 1x 1x 16x 16x 16x 3x 16x 16x 4x 4x 16x 16x 22x 22x 16x 16x 22x 16x 16x 3x 87x 87x 3x 9x 9x 9x 3x 9x 9x 6x 6x 9x 3x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 3x 3x 2x 2x 2x 2x 2x 3x 1x 1x 1x | import {
type App,
type Component,
type ComponentCustomElementInterface,
type ComponentInjectOptions,
type ComponentInternalInstance,
type ComponentObjectPropsOptions,
type ComponentOptions,
type ComponentOptionsBase,
type ComponentOptionsMixin,
type ComponentProvideOptions,
type ComponentPublicInstance,
type ComputedOptions,
type ConcreteComponent,
type CreateAppFunction,
type CreateComponentPublicInstanceWithMixins,
type DefineComponent,
type Directive,
type EmitsOptions,
type EmitsToProps,
type ExtractPropTypes,
type MethodOptions,
type RenderFunction,
type SetupContext,
type SlotsType,
type VNode,
type VNodeProps,
createVNode,
defineComponent,
getCurrentInstance,
nextTick,
unref,
warn,
} from '@vue/runtime-core'
import {
camelize,
extend,
hasOwn,
hyphenate,
isArray,
isPlainObject,
toNumber,
} from '@vue/shared'
import { createApp, createSSRApp, render } from '.'
// marker for attr removal
const REMOVAL = {}
export type VueElementConstructor<P = {}> = {
new (initialProps?: Record<string, any>): VueElement & P
}
export interface CustomElementOptions {
styles?: string[]
shadowRoot?: boolean
shadowRootOptions?: Omit<ShadowRootInit, 'mode'>
nonce?: string
configureApp?: (app: App) => void
}
// defineCustomElement provides the same type inference as defineComponent
// so most of the following overloads should be kept in sync w/ defineComponent.
// overload 1: direct setup function
export function defineCustomElement<Props, RawBindings = object>(
setup: (props: Props, ctx: SetupContext) => RawBindings | RenderFunction,
options?: Pick<ComponentOptions, 'name' | 'inheritAttrs' | 'emits'> &
CustomElementOptions & {
props?: (keyof Props)[]
},
): VueElementConstructor<Props>
export function defineCustomElement<Props, RawBindings = object>(
setup: (props: Props, ctx: SetupContext) => RawBindings | RenderFunction,
options?: Pick<ComponentOptions, 'name' | 'inheritAttrs' | 'emits'> &
CustomElementOptions & {
props?: ComponentObjectPropsOptions<Props>
},
): VueElementConstructor<Props>
// overload 2: defineCustomElement with options object, infer props from options
export function defineCustomElement<
// props
RuntimePropsOptions extends
ComponentObjectPropsOptions = ComponentObjectPropsOptions,
PropsKeys extends string = string,
// emits
RuntimeEmitsOptions extends EmitsOptions = {},
EmitsKeys extends string = string,
// other options
Data = {},
SetupBindings = {},
Computed extends ComputedOptions = {},
Methods extends MethodOptions = {},
Mixin extends ComponentOptionsMixin = ComponentOptionsMixin,
Extends extends ComponentOptionsMixin = ComponentOptionsMixin,
InjectOptions extends ComponentInjectOptions = {},
InjectKeys extends string = string,
Slots extends SlotsType = {},
LocalComponents extends Record<string, Component> = {},
Directives extends Record<string, Directive> = {},
Exposed extends string = string,
Provide extends ComponentProvideOptions = ComponentProvideOptions,
// resolved types
InferredProps = string extends PropsKeys
? ComponentObjectPropsOptions extends RuntimePropsOptions
? {}
: ExtractPropTypes<RuntimePropsOptions>
: { [key in PropsKeys]?: any },
ResolvedProps = InferredProps & EmitsToProps<RuntimeEmitsOptions>,
>(
options: CustomElementOptions & {
props?: (RuntimePropsOptions & ThisType<void>) | PropsKeys[]
} & ComponentOptionsBase<
ResolvedProps,
SetupBindings,
Data,
Computed,
Methods,
Mixin,
Extends,
RuntimeEmitsOptions,
EmitsKeys,
{}, // Defaults
InjectOptions,
InjectKeys,
Slots,
LocalComponents,
Directives,
Exposed,
Provide
> &
ThisType<
CreateComponentPublicInstanceWithMixins<
Readonly<ResolvedProps>,
SetupBindings,
Data,
Computed,
Methods,
Mixin,
Extends,
RuntimeEmitsOptions,
EmitsKeys,
{},
false,
InjectOptions,
Slots,
LocalComponents,
Directives,
Exposed
>
>,
extraOptions?: CustomElementOptions,
): VueElementConstructor<ResolvedProps>
// overload 3: defining a custom element from the returned value of
// `defineComponent`
export function defineCustomElement<
// this should be `ComponentPublicInstanceConstructor` but that type is not exported
T extends { new (...args: any[]): ComponentPublicInstance<any> },
>(
options: T,
extraOptions?: CustomElementOptions,
): VueElementConstructor<
T extends DefineComponent<infer P, any, any, any> ? P : unknown
>
/*@__NO_SIDE_EFFECTS__*/
export function defineCustomElement(
options: any,
extraOptions?: ComponentOptions,
/**
* @internal
*/
_createApp?: CreateAppFunction<Element>,
): VueElementConstructor {
let Comp = defineComponent(options, extraOptions) as any
if (isPlainObject(Comp)) Comp = extend({}, Comp, extraOptions)
class VueCustomElement extends VueElement {
static def = Comp
constructor(initialProps?: Record<string, any>) {
super(Comp, initialProps, _createApp)
}
}
return VueCustomElement
}
/*@__NO_SIDE_EFFECTS__*/
export const defineSSRCustomElement = ((
options: any,
extraOptions?: ComponentOptions,
) => {
// @ts-expect-error
return defineCustomElement(options, extraOptions, createSSRApp)
}) as typeof defineCustomElement
const BaseClass = (
typeof HTMLElement !== 'undefined' ? HTMLElement : class {}
) as typeof HTMLElement
type InnerComponentDef = ConcreteComponent & CustomElementOptions
export class VueElement
extends BaseClass
implements ComponentCustomElementInterface
{
_isVueCE = true
/**
* @internal
*/
_instance: ComponentInternalInstance | null = null
/**
* @internal
*/
_app: App | null = null
/**
* @internal
*/
_root: Element | ShadowRoot
/**
* @internal
*/
_nonce: string | undefined = this._def.nonce
/**
* @internal
*/
_teleportTargets?: Set<Element>
private _connected = false
private _resolved = false
private _patching = false
private _dirty = false
private _numberProps: Record<string, true> | null = null
private _styleChildren = new WeakSet()
private _pendingResolve: Promise<void> | undefined
private _parent: VueElement | undefined
/**
* dev only
*/
private _styles?: HTMLStyleElement[]
/**
* dev only
*/
private _childStyles?: Map<string, HTMLStyleElement[]>
private _ob?: MutationObserver | null = null
private _slots?: Record<string, Node[]>
constructor(
/**
* Component def - note this may be an AsyncWrapper, and this._def will
* be overwritten by the inner component when resolved.
*/
private _def: InnerComponentDef,
private _props: Record<string, any> = {},
private _createApp: CreateAppFunction<Element> = createApp,
) {
super()
if (this.shadowRoot && _createApp !== createApp) {
this._root = this.shadowRoot
} else {
if (__DEV__ && this.shadowRoot) {
warn(
`Custom element has pre-rendered declarative shadow root but is not ` +
`defined as hydratable. Use \`defineSSRCustomElement\`.`,
)
}
if (_def.shadowRoot !== false) {
this.attachShadow(
extend({}, _def.shadowRootOptions, {
mode: 'open',
}) as ShadowRootInit,
)
this._root = this.shadowRoot!
} else {
this._root = this
}
}
}
connectedCallback(): void {
// avoid resolving component if it's not connected
if (!this.isConnected) return
// avoid re-parsing slots if already resolved
if (!this.shadowRoot && !this._resolved) {
this._parseSlots()
}
this._connected = true
// locate nearest Vue custom element parent for provide/inject
let parent: Node | null = this
while (
(parent = parent && (parent.parentNode || (parent as ShadowRoot).host))
) {
if (parent instanceof VueElement) {
this._parent = parent
break
}
}
if (!this._instance) {
if (this._resolved) {
this._mount(this._def)
} else {
if (parent && parent._pendingResolve) {
this._pendingResolve = parent._pendingResolve.then(() => {
this._pendingResolve = undefined
this._resolveDef()
})
} else {
this._resolveDef()
}
}
}
}
private _setParent(parent = this._parent) {
if (parent) {
this._instance!.parent = parent._instance
this._inheritParentContext(parent)
}
}
private _inheritParentContext(parent = this._parent) {
// #13212, the provides object of the app context must inherit the provides
// object from the parent element so we can inject values from both places
if (parent && this._app) {
Object.setPrototypeOf(
this._app._context.provides,
parent._instance!.provides,
)
}
}
disconnectedCallback(): void {
this._connected = false
nextTick(() => {
if (!this._connected) {
if (this._ob) {
this._ob.disconnect()
this._ob = null
}
// unmount
this._app && this._app.unmount()
if (this._instance) this._instance.ce = undefined
this._app = this._instance = null
if (this._teleportTargets) {
this._teleportTargets.clear()
this._teleportTargets = undefined
}
}
})
}
private _processMutations(mutations: MutationRecord[]) {
for (const m of mutations) {
this._setAttr(m.attributeName!)
}
}
/**
* resolve inner component definition (handle possible async component)
*/
private _resolveDef() {
if (this._pendingResolve) {
return
}
// set initial attrs
for (let i = 0; i < this.attributes.length; i++) {
this._setAttr(this.attributes[i].name)
}
// watch future attr changes
this._ob = new MutationObserver(this._processMutations.bind(this))
this._ob.observe(this, { attributes: true })
const resolve = (def: InnerComponentDef, isAsync = false) => {
this._resolved = true
this._pendingResolve = undefined
const { props, styles } = def
// cast Number-type props set before resolve
let numberProps
if (props && !isArray(props)) {
for (const key in props) {
const opt = props[key]
if (opt === Number || (opt && opt.type === Number)) {
if (key in this._props) {
this._props[key] = toNumber(this._props[key])
}
;(numberProps || (numberProps = Object.create(null)))[
camelize(key)
] = true
}
}
}
this._numberProps = numberProps
this._resolveProps(def)
// apply CSS
if (this.shadowRoot) {
this._applyStyles(styles)
} else if (__DEV__ && styles) {
warn(
'Custom element style injection is not supported when using ' +
'shadowRoot: false',
)
}
// initial mount
this._mount(def)
}
const asyncDef = (this._def as ComponentOptions).__asyncLoader
if (asyncDef) {
this._pendingResolve = asyncDef().then((def: InnerComponentDef) => {
def.configureApp = this._def.configureApp
resolve((this._def = def), true)
})
} else {
resolve(this._def)
}
}
private _mount(def: InnerComponentDef) {
if ((__DEV__ || __FEATURE_PROD_DEVTOOLS__) && !def.name) {
// @ts-expect-error
def.name = 'VueElement'
}
this._app = this._createApp(def)
// inherit before configureApp to detect context overwrites
this._inheritParentContext()
if (def.configureApp) {
def.configureApp(this._app)
}
this._app._ceVNode = this._createVNode()
this._app.mount(this._root)
// apply expose after mount
const exposed = this._instance && this._instance.exposed
if (!exposed) return
for (const key in exposed) {
if (!hasOwn(this, key)) {
// exposed properties are readonly
Object.defineProperty(this, key, {
// unwrap ref to be consistent with public instance behavior
get: () => unref(exposed[key]),
})
} else if (__DEV__) {
warn(`Exposed property "${key}" already exists on custom element.`)
}
}
}
private _resolveProps(def: InnerComponentDef) {
const { props } = def
const declaredPropKeys = isArray(props) ? props : Object.keys(props || {})
// check if there are props set pre-upgrade or connect
for (const key of Object.keys(this)) {
if (key[0] !== '_' && declaredPropKeys.includes(key)) {
this._setProp(key, this[key as keyof this])
}
}
// defining getter/setters on prototype
for (const key of declaredPropKeys.map(camelize)) {
Object.defineProperty(this, key, {
get(this: VueElement) {
return this._getProp(key)
},
set(this: VueElement, val) {
this._setProp(key, val, true, !this._patching)
},
})
}
}
protected _setAttr(key: string): void {
if (key.startsWith('data-v-')) return
const has = this.hasAttribute(key)
let value = has ? this.getAttribute(key) : REMOVAL
const camelKey = camelize(key)
if (has && this._numberProps && this._numberProps[camelKey]) {
value = toNumber(value)
}
this._setProp(camelKey, value, false, true)
}
/**
* @internal
*/
protected _getProp(key: string): any {
return this._props[key]
}
/**
* @internal
*/
_setProp(
key: string,
val: any,
shouldReflect = true,
shouldUpdate = false,
): void {
if (val !== this._props[key]) {
this._dirty = true
if (val === REMOVAL) {
delete this._props[key]
} else {
this._props[key] = val
// support set key on ceVNode
if (key === 'key' && this._app) {
this._app._ceVNode!.key = val
}
}
if (shouldUpdate && this._instance) {
this._update()
}
// reflect
if (shouldReflect) {
const ob = this._ob
if (ob) {
this._processMutations(ob.takeRecords())
ob.disconnect()
}
if (val === true) {
this.setAttribute(hyphenate(key), '')
} else if (typeof val === 'string' || typeof val === 'number') {
this.setAttribute(hyphenate(key), val + '')
} else if (!val) {
this.removeAttribute(hyphenate(key))
}
ob && ob.observe(this, { attributes: true })
}
}
}
private _update() {
const vnode = this._createVNode()
if (this._app) vnode.appContext = this._app._context
render(vnode, this._root)
}
private _createVNode(): VNode<any, any> {
const baseProps: VNodeProps = {}
if (!this.shadowRoot) {
baseProps.onVnodeMounted = baseProps.onVnodeUpdated =
this._renderSlots.bind(this)
}
const vnode = createVNode(this._def, extend(baseProps, this._props))
if (!this._instance) {
vnode.ce = instance => {
this._instance = instance
instance.ce = this
instance.isCE = true // for vue-i18n backwards compat
// HMR
if (__DEV__) {
instance.ceReload = newStyles => {
// always reset styles
if (this._styles) {
this._styles.forEach(s => this._root.removeChild(s))
this._styles.length = 0
}
this._applyStyles(newStyles)
this._instance = null
this._update()
}
}
const dispatch = (event: string, args: any[]) => {
this.dispatchEvent(
new CustomEvent(
event,
isPlainObject(args[0])
? extend({ detail: args }, args[0])
: { detail: args },
),
)
}
// intercept emit
instance.emit = (event: string, ...args: any[]) => {
// dispatch both the raw and hyphenated versions of an event
// to match Vue behavior
dispatch(event, args)
if (hyphenate(event) !== event) {
dispatch(hyphenate(event), args)
}
}
this._setParent()
}
}
return vnode
}
private _applyStyles(
styles: string[] | undefined,
owner?: ConcreteComponent,
) {
if (!styles) return
if (owner) {
if (owner === this._def || this._styleChildren.has(owner)) {
return
}
this._styleChildren.add(owner)
}
const nonce = this._nonce
for (let i = styles.length - 1; i >= 0; i--) {
const s = document.createElement('style')
if (nonce) s.setAttribute('nonce', nonce)
s.textContent = styles[i]
this.shadowRoot!.prepend(s)
// record for HMR
if (__DEV__) {
if (owner) {
if (owner.__hmrId) {
if (!this._childStyles) this._childStyles = new Map()
let entry = this._childStyles.get(owner.__hmrId)
if (!entry) {
this._childStyles.set(owner.__hmrId, (entry = []))
}
entry.push(s)
}
} else {
;(this._styles || (this._styles = [])).push(s)
}
}
}
}
/**
* Only called when shadowRoot is false
*/
private _parseSlots() {
const slots: VueElement['_slots'] = (this._slots = {})
let n
while ((n = this.firstChild)) {
const slotName =
(n.nodeType === 1 && (n as Element).getAttribute('slot')) || 'default'
;(slots[slotName] || (slots[slotName] = [])).push(n)
this.removeChild(n)
}
}
/**
* Only called when shadowRoot is false
*/
private _renderSlots() {
const outlets = this._getSlots()
const scopeId = this._instance!.type.__scopeId
for (let i = 0; i < outlets.length; i++) {
const o = outlets[i] as HTMLSlotElement
const slotName = o.getAttribute('name') || 'default'
const content = this._slots![slotName]
const parent = o.parentNode!
if (content) {
for (const n of content) {
// for :slotted css
if (scopeId && n.nodeType === 1) {
const id = scopeId + '-s'
const walker = document.createTreeWalker(n, 1)
;(n as Element).setAttribute(id, '')
let child
while ((child = walker.nextNode())) {
;(child as Element).setAttribute(id, '')
}
}
parent.insertBefore(n, o)
}
} else {
while (o.firstChild) parent.insertBefore(o.firstChild, o)
}
parent.removeChild(o)
}
}
/**
* @internal
*/
private _getSlots(): HTMLSlotElement[] {
const roots: Element[] = [this]
if (this._teleportTargets) {
roots.push(...this._teleportTargets)
}
const slots = new Set<HTMLSlotElement>()
for (const root of roots) {
const found = root.querySelectorAll<HTMLSlotElement>('slot')
for (let i = 0; i < found.length; i++) {
slots.add(found[i])
}
}
return Array.from(slots)
}
/**
* @internal
*/
_injectChildStyle(comp: ConcreteComponent & CustomElementOptions): void {
this._applyStyles(comp.styles, comp)
}
/**
* @internal
*/
_beginPatch(): void {
this._patching = true
this._dirty = false
}
/**
* @internal
*/
_endPatch(): void {
this._patching = false
if (this._dirty && this._instance) {
this._update()
}
}
/**
* @internal
*/
_removeChildStyle(comp: ConcreteComponent): void {
if (__DEV__) {
this._styleChildren.delete(comp)
if (this._childStyles && comp.__hmrId) {
// clear old styles
const oldStyles = this._childStyles.get(comp.__hmrId)
if (oldStyles) {
oldStyles.forEach(s => this._root.removeChild(s))
oldStyles.length = 0
}
}
}
}
}
export function useHost(caller?: string): VueElement | null {
const instance = getCurrentInstance()
const el = instance && (instance.ce as VueElement)
if (el) {
return el
} else if (__DEV__) {
if (!instance) {
warn(
`${caller || 'useHost'} called without an active component instance.`,
)
} else {
warn(
`${caller || 'useHost'} can only be used in components defined via ` +
`defineCustomElement.`,
)
}
}
return null
}
/**
* Retrieve the shadowRoot of the current custom element. Only usable in setup()
* of a `defineCustomElement` component.
*/
export function useShadowRoot(): ShadowRoot | null {
const el = __DEV__ ? useHost('useShadowRoot') : useHost()
return el && el.shadowRoot
}
|