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 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 4223x 2x 2x 58x 58x 44x 44x 58x 58x 58x 58x 58x 58x 58x 58x 58x 58x 58x 58x 58x 58x 2x 2x 2x 2x 58x 74x 74x 74x 64x 64x 64x 9x 9x 4x 4x 4x 4x 4x 9x 5x 5x 64x 64x 56x 1x 1x 56x 55x 55x 55x 56x 56x 55x 55x 64x 74x 58x 58x 58x 58x 5x 5x 5x 1x 5x 4x 4x 5x 58x 12x 12x 58x 61x 61x 61x 8x 8x 53x 12x 12x 12x 12x 12x 12x 12x 12x 53x 61x 48x 61x 13x 13x 11x 13x 13x 2x 2x 2x 2x 13x 13x 40x 40x 40x 48x 39x 26x 39x 39x 59x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 40x 40x 34x 34x 4x 4x 40x 40x 6x 6x 40x 40x 85x 34x 77x 5x 5x 5x 51x 7x 7x 85x 61x 58x 58x 53x 53x 53x 53x 53x 53x 53x 53x 53x 53x 53x | import {
type Component,
type ComponentInternalInstance,
type ComponentOptions,
type ConcreteComponent,
currentInstance,
isInSSRComponentSetup,
} from './component'
import { isFunction, isObject } from '@vue/shared'
import type { ComponentPublicInstance } from './componentPublicInstance'
import { type VNode, createVNode } from './vnode'
import { defineComponent } from './apiDefineComponent'
import { warn } from './warning'
import { ref } from '@vue/reactivity'
import { ErrorCodes, handleError } from './errorHandling'
import { isKeepAlive } from './components/KeepAlive'
import { markAsyncBoundary } from './helpers/useId'
import { type HydrationStrategy, forEachElement } from './hydrationStrategies'
export type AsyncComponentResolveResult<T = Component> = T | { default: T } // es modules
export type AsyncComponentLoader<T = any> = () => Promise<
AsyncComponentResolveResult<T>
>
export interface AsyncComponentOptions<T = any> {
loader: AsyncComponentLoader<T>
loadingComponent?: Component
errorComponent?: Component
delay?: number
timeout?: number
suspensible?: boolean
hydrate?: HydrationStrategy
onError?: (
error: Error,
retry: () => void,
fail: () => void,
attempts: number,
) => any
}
export const isAsyncWrapper = (i: ComponentInternalInstance | VNode): boolean =>
!!(i.type as ComponentOptions).__asyncLoader
/*! #__NO_SIDE_EFFECTS__ */
export function defineAsyncComponent<
T extends Component = { new (): ComponentPublicInstance },
>(source: AsyncComponentLoader<T> | AsyncComponentOptions<T>): T {
if (isFunction(source)) {
source = { loader: source }
}
const {
loader,
loadingComponent,
errorComponent,
delay = 200,
hydrate: hydrateStrategy,
timeout, // undefined = never times out
suspensible = true,
onError: userOnError,
} = source
let pendingRequest: Promise<ConcreteComponent> | null = null
let resolvedComp: ConcreteComponent | undefined
let retries = 0
const retry = () => {
retries++
pendingRequest = null
return load()
}
const load = (): Promise<ConcreteComponent> => {
let thisRequest: Promise<ConcreteComponent>
return (
pendingRequest ||
(thisRequest = pendingRequest =
loader()
.catch(err => {
err = err instanceof Error ? err : new Error(String(err))
if (userOnError) {
return new Promise((resolve, reject) => {
const userRetry = () => resolve(retry())
const userFail = () => reject(err)
userOnError(err, userRetry, userFail, retries + 1)
})
} else {
throw err
}
})
.then((comp: any) => {
if (thisRequest !== pendingRequest && pendingRequest) {
return pendingRequest
}
if (__DEV__ && !comp) {
warn(
`Async component loader resolved to undefined. ` +
`If you are using retry(), make sure to return its return value.`,
)
}
// interop module default
if (
comp &&
(comp.__esModule || comp[Symbol.toStringTag] === 'Module')
) {
comp = comp.default
}
if (__DEV__ && comp && !isObject(comp) && !isFunction(comp)) {
throw new Error(`Invalid async component load result: ${comp}`)
}
resolvedComp = comp
return comp
}))
)
}
return defineComponent({
name: 'AsyncComponentWrapper',
__asyncLoader: load,
__asyncHydrate(el, instance, hydrate) {
const doHydrate = hydrateStrategy
? () => {
const teardown = hydrateStrategy(hydrate, cb =>
forEachElement(el, cb),
)
if (teardown) {
;(instance.bum || (instance.bum = [])).push(teardown)
}
}
: hydrate
if (resolvedComp) {
doHydrate()
} else {
load().then(() => !instance.isUnmounted && doHydrate())
}
},
get __asyncResolved() {
return resolvedComp
},
setup() {
const instance = currentInstance!
markAsyncBoundary(instance)
// already resolved
if (resolvedComp) {
return () => createInnerComp(resolvedComp!, instance)
}
const onError = (err: Error) => {
pendingRequest = null
handleError(
err,
instance,
ErrorCodes.ASYNC_COMPONENT_LOADER,
!errorComponent /* do not throw in dev if user provided error component */,
)
}
// suspense-controlled or SSR.
if (
(__FEATURE_SUSPENSE__ && suspensible && instance.suspense) ||
(__SSR__ && isInSSRComponentSetup)
) {
return load()
.then(comp => {
return () => createInnerComp(comp, instance)
})
.catch(err => {
onError(err)
return () =>
errorComponent
? createVNode(errorComponent as ConcreteComponent, {
error: err,
})
: null
})
}
const loaded = ref(false)
const error = ref()
const delayed = ref(!!delay)
if (delay) {
setTimeout(() => {
delayed.value = false
}, delay)
}
if (timeout != null) {
setTimeout(() => {
if (!loaded.value && !error.value) {
const err = new Error(
`Async component timed out after ${timeout}ms.`,
)
onError(err)
error.value = err
}
}, timeout)
}
load()
.then(() => {
loaded.value = true
if (instance.parent && isKeepAlive(instance.parent.vnode)) {
// parent is keep-alive, force update so the loaded component's
// name is taken into account
instance.parent.update()
}
})
.catch(err => {
onError(err)
error.value = err
})
return () => {
if (loaded.value && resolvedComp) {
return createInnerComp(resolvedComp, instance)
} else if (error.value && errorComponent) {
return createVNode(errorComponent, {
error: error.value,
})
} else if (loadingComponent && !delayed.value) {
return createVNode(loadingComponent)
}
}
},
}) as T
}
function createInnerComp(
comp: ConcreteComponent,
parent: ComponentInternalInstance,
) {
const { ref, props, children, ce } = parent.vnode
const vnode = createVNode(comp, props, children)
// ensure inner component inherits the async wrapper's ref owner
vnode.ref = ref
// pass the custom element callback on to the inner comp
// and remove it from the async wrapper
vnode.ce = ce
delete parent.vnode.ce
return vnode
}
|