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type Component,
type ComponentInternalInstance,
type ConcreteComponent,
type Data,
getComponentPublicInstance,
validateComponentName,
} from './component'
import type {
ComponentOptions,
MergedComponentOptions,
RuntimeCompilerOptions,
} from './componentOptions'
import type {
ComponentCustomProperties,
ComponentPublicInstance,
} from './componentPublicInstance'
import { type Directive, validateDirectiveName } from './directives'
import type { ElementNamespace, RootRenderFunction } from './renderer'
import type { InjectionKey } from './apiInject'
import { warn } from './warning'
import { type VNode, cloneVNode, createVNode } from './vnode'
import type { RootHydrateFunction } from './hydration'
import { devtoolsInitApp, devtoolsUnmountApp } from './devtools'
import { NO, extend, isFunction, isObject } from '@vue/shared'
import { version } from '.'
import { installAppCompatProperties } from './compat/global'
import type { NormalizedPropsOptions } from './componentProps'
import type { ObjectEmitsOptions } from './componentEmits'
import { ErrorCodes, callWithAsyncErrorHandling } from './errorHandling'
import type { DefineComponent } from './apiDefineComponent'
export interface App<HostElement = any> {
version: string
config: AppConfig
use<Options extends unknown[]>(
plugin: Plugin<Options>,
...options: Options
): this
use<Options>(plugin: Plugin<Options>, options: Options): this
mixin(mixin: ComponentOptions): this
component(name: string): Component | undefined
component<T extends Component | DefineComponent>(
name: string,
component: T,
): this
directive<
HostElement = any,
Value = any,
Modifiers extends string = string,
Arg extends string = string,
>(
name: string,
): Directive<HostElement, Value, Modifiers, Arg> | undefined
directive<
HostElement = any,
Value = any,
Modifiers extends string = string,
Arg extends string = string,
>(
name: string,
directive: Directive<HostElement, Value, Modifiers, Arg>,
): this
mount(
rootContainer: HostElement | string,
/**
* @internal
*/
isHydrate?: boolean,
/**
* @internal
*/
namespace?: boolean | ElementNamespace,
/**
* @internal
*/
vnode?: VNode,
): ComponentPublicInstance
unmount(): void
onUnmount(cb: () => void): void
provide<T, K = InjectionKey<T> | string | number>(
key: K,
value: K extends InjectionKey<infer V> ? V : T,
): this
/**
* Runs a function with the app as active instance. This allows using of `inject()` within the function to get access
* to variables provided via `app.provide()`.
*
* @param fn - function to run with the app as active instance
*/
runWithContext<T>(fn: () => T): T
// internal, but we need to expose these for the server-renderer and devtools
_uid: number
_component: ConcreteComponent
_props: Data | null
_container: HostElement | null
_context: AppContext
_instance: ComponentInternalInstance | null
/**
* @internal custom element vnode
*/
_ceVNode?: VNode
/**
* v2 compat only
*/
filter?(name: string): Function | undefined
filter?(name: string, filter: Function): this
/**
* @internal v3 compat only
*/
_createRoot?(options: ComponentOptions): ComponentPublicInstance
}
export type OptionMergeFunction = (to: unknown, from: unknown) => any
export interface AppConfig {
// @private
readonly isNativeTag: (tag: string) => boolean
performance: boolean
optionMergeStrategies: Record<string, OptionMergeFunction>
globalProperties: ComponentCustomProperties & Record<string, any>
errorHandler?: (
err: unknown,
instance: ComponentPublicInstance | null,
info: string,
) => void
warnHandler?: (
msg: string,
instance: ComponentPublicInstance | null,
trace: string,
) => void
/**
* Options to pass to `@vue/compiler-dom`.
* Only supported in runtime compiler build.
*/
compilerOptions: RuntimeCompilerOptions
/**
* @deprecated use config.compilerOptions.isCustomElement
*/
isCustomElement?: (tag: string) => boolean
/**
* TODO document for 3.5
* Enable warnings for computed getters that recursively trigger itself.
*/
warnRecursiveComputed?: boolean
/**
* Whether to throw unhandled errors in production.
* Default is `false` to avoid crashing on any error (and only logs it)
* But in some cases, e.g. SSR, throwing might be more desirable.
*/
throwUnhandledErrorInProduction?: boolean
/**
* Prefix for all useId() calls within this app
*/
idPrefix?: string
}
export interface AppContext {
app: App // for devtools
config: AppConfig
mixins: ComponentOptions[]
components: Record<string, Component>
directives: Record<string, Directive>
provides: Record<string | symbol, any>
/**
* Cache for merged/normalized component options
* Each app instance has its own cache because app-level global mixins and
* optionMergeStrategies can affect merge behavior.
* @internal
*/
optionsCache: WeakMap<ComponentOptions, MergedComponentOptions>
/**
* Cache for normalized props options
* @internal
*/
propsCache: WeakMap<ConcreteComponent, NormalizedPropsOptions>
/**
* Cache for normalized emits options
* @internal
*/
emitsCache: WeakMap<ConcreteComponent, ObjectEmitsOptions | null>
/**
* HMR only
* @internal
*/
reload?: () => void
/**
* v2 compat only
* @internal
*/
filters?: Record<string, Function>
}
type PluginInstallFunction<Options = any[]> = Options extends unknown[]
? (app: App, ...options: Options) => any
: (app: App, options: Options) => any
export type ObjectPlugin<Options = any[]> = {
install: PluginInstallFunction<Options>
}
export type FunctionPlugin<Options = any[]> = PluginInstallFunction<Options> &
Partial<ObjectPlugin<Options>>
export type Plugin<Options = any[]> =
| FunctionPlugin<Options>
| ObjectPlugin<Options>
export function createAppContext(): AppContext {
return {
app: null as any,
config: {
isNativeTag: NO,
performance: false,
globalProperties: {},
optionMergeStrategies: {},
errorHandler: undefined,
warnHandler: undefined,
compilerOptions: {},
},
mixins: [],
components: {},
directives: {},
provides: Object.create(null),
optionsCache: new WeakMap(),
propsCache: new WeakMap(),
emitsCache: new WeakMap(),
}
}
export type CreateAppFunction<HostElement> = (
rootComponent: Component,
rootProps?: Data | null,
) => App<HostElement>
let uid = 0
export function createAppAPI<HostElement>(
render: RootRenderFunction<HostElement>,
hydrate?: RootHydrateFunction,
): CreateAppFunction<HostElement> {
return function createApp(rootComponent, rootProps = null) {
if (!isFunction(rootComponent)) {
rootComponent = extend({}, rootComponent)
}
if (rootProps != null && !isObject(rootProps)) {
__DEV__ && warn(`root props passed to app.mount() must be an object.`)
rootProps = null
}
const context = createAppContext()
const installedPlugins = new WeakSet()
const pluginCleanupFns: Array<() => any> = []
let isMounted = false
const app: App = (context.app = {
_uid: uid++,
_component: rootComponent as ConcreteComponent,
_props: rootProps,
_container: null,
_context: context,
_instance: null,
version,
get config() {
return context.config
},
set config(v) {
if (__DEV__) {
warn(
`app.config cannot be replaced. Modify individual options instead.`,
)
}
},
use(plugin: Plugin, ...options: any[]) {
if (installedPlugins.has(plugin)) {
__DEV__ && warn(`Plugin has already been applied to target app.`)
} else if (plugin && isFunction(plugin.install)) {
installedPlugins.add(plugin)
plugin.install(app, ...options)
} else if (isFunction(plugin)) {
installedPlugins.add(plugin)
plugin(app, ...options)
} else if (__DEV__) {
warn(
`A plugin must either be a function or an object with an "install" ` +
`function.`,
)
}
return app
},
mixin(mixin: ComponentOptions) {
if (__FEATURE_OPTIONS_API__) {
if (!context.mixins.includes(mixin)) {
context.mixins.push(mixin)
} else if (__DEV__) {
warn(
'Mixin has already been applied to target app' +
(mixin.name ? `: ${mixin.name}` : ''),
)
}
} else if (__DEV__) {
warn('Mixins are only available in builds supporting Options API')
}
return app
},
component(name: string, component?: Component): any {
if (__DEV__) {
validateComponentName(name, context.config)
}
if (!component) {
return context.components[name]
}
if (__DEV__ && context.components[name]) {
warn(`Component "${name}" has already been registered in target app.`)
}
context.components[name] = component
return app
},
directive(name: string, directive?: Directive) {
if (__DEV__) {
validateDirectiveName(name)
}
if (!directive) {
return context.directives[name] as any
}
if (__DEV__ && context.directives[name]) {
warn(`Directive "${name}" has already been registered in target app.`)
}
context.directives[name] = directive
return app
},
mount(
rootContainer: HostElement,
isHydrate?: boolean,
namespace?: boolean | ElementNamespace,
): any {
if (!isMounted) {
// #5571
if (__DEV__ && (rootContainer as any).__vue_app__) {
warn(
`There is already an app instance mounted on the host container.\n` +
` If you want to mount another app on the same host container,` +
` you need to unmount the previous app by calling \`app.unmount()\` first.`,
)
}
const vnode = app._ceVNode || createVNode(rootComponent, rootProps)
// store app context on the root VNode.
// this will be set on the root instance on initial mount.
vnode.appContext = context
if (namespace === true) {
namespace = 'svg'
} else if (namespace === false) {
namespace = undefined
}
// HMR root reload
if (__DEV__) {
context.reload = () => {
// casting to ElementNamespace because TS doesn't guarantee type narrowing
// over function boundaries
render(
cloneVNode(vnode),
rootContainer,
namespace as ElementNamespace,
)
}
}
if (isHydrate && hydrate) {
hydrate(vnode as VNode<Node, Element>, rootContainer as any)
} else {
render(vnode, rootContainer, namespace)
}
isMounted = true
app._container = rootContainer
// for devtools and telemetry
;(rootContainer as any).__vue_app__ = app
if (__DEV__ || __FEATURE_PROD_DEVTOOLS__) {
app._instance = vnode.component
devtoolsInitApp(app, version)
}
return getComponentPublicInstance(vnode.component!)
} else if (__DEV__) {
warn(
`App has already been mounted.\n` +
`If you want to remount the same app, move your app creation logic ` +
`into a factory function and create fresh app instances for each ` +
`mount - e.g. \`const createMyApp = () => createApp(App)\``,
)
}
},
onUnmount(cleanupFn: () => void) {
if (__DEV__ && typeof cleanupFn !== 'function') {
warn(
`Expected function as first argument to app.onUnmount(), ` +
`but got ${typeof cleanupFn}`,
)
}
pluginCleanupFns.push(cleanupFn)
},
unmount() {
if (isMounted) {
callWithAsyncErrorHandling(
pluginCleanupFns,
app._instance,
ErrorCodes.APP_UNMOUNT_CLEANUP,
)
render(null, app._container)
if (__DEV__ || __FEATURE_PROD_DEVTOOLS__) {
app._instance = null
devtoolsUnmountApp(app)
}
delete app._container.__vue_app__
} else if (__DEV__) {
warn(`Cannot unmount an app that is not mounted.`)
}
},
provide(key, value) {
if (__DEV__ && (key as string | symbol) in context.provides) {
warn(
`App already provides property with key "${String(key)}". ` +
`It will be overwritten with the new value.`,
)
}
context.provides[key as string | symbol] = value
return app
},
runWithContext(fn) {
const lastApp = currentApp
currentApp = app
try {
return fn()
} finally {
currentApp = lastApp
}
},
})
if (__COMPAT__) {
installAppCompatProperties(app, context, render)
}
return app
}
}
/**
* @internal Used to identify the current app when using `inject()` within
* `app.runWithContext()`.
*/
export let currentApp: App<unknown> | null = null
|