/
instance.ts
169 lines (153 loc) 路 4.86 KB
/
instance.ts
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import {
extend,
looseEqual,
looseIndexOf,
looseToNumber,
NOOP,
toDisplayString
} from '@vue/shared'
import {
ComponentPublicInstance,
PublicPropertiesMap
} from '../componentPublicInstance'
import { getCompatChildren } from './instanceChildren'
import {
DeprecationTypes,
assertCompatEnabled,
isCompatEnabled
} from './compatConfig'
import { off, on, once } from './instanceEventEmitter'
import { getCompatListeners } from './instanceListeners'
import { shallowReadonly } from '@vue/reactivity'
import { legacySlotProxyHandlers } from './componentFunctional'
import { compatH } from './renderFn'
import { createCommentVNode, createTextVNode } from '../vnode'
import { renderList } from '../helpers/renderList'
import {
legacyBindDynamicKeys,
legacyBindObjectListeners,
legacyBindObjectProps,
legacyCheckKeyCodes,
legacyMarkOnce,
legacyPrependModifier,
legacyRenderSlot,
legacyRenderStatic,
legacyresolveScopedSlots
} from './renderHelpers'
import { resolveFilter } from '../helpers/resolveAssets'
import { InternalSlots, Slots } from '../componentSlots'
import { ContextualRenderFn } from '../componentRenderContext'
import { resolveMergedOptions } from '../componentOptions'
export type LegacyPublicInstance = ComponentPublicInstance &
LegacyPublicProperties
export interface LegacyPublicProperties {
$set(target: object, key: string, value: any): void
$delete(target: object, key: string): void
$mount(el?: string | Element): this
$destroy(): void
$scopedSlots: Slots
$on(event: string | string[], fn: Function): this
$once(event: string, fn: Function): this
$off(event?: string | string[], fn?: Function): this
$children: LegacyPublicProperties[]
$listeners: Record<string, Function | Function[]>
}
export function installCompatInstanceProperties(map: PublicPropertiesMap) {
const set = (target: any, key: any, val: any) => {
target[key] = val
}
const del = (target: any, key: any) => {
delete target[key]
}
extend(map, {
$set: i => {
assertCompatEnabled(DeprecationTypes.INSTANCE_SET, i)
return set
},
$delete: i => {
assertCompatEnabled(DeprecationTypes.INSTANCE_DELETE, i)
return del
},
$mount: i => {
assertCompatEnabled(
DeprecationTypes.GLOBAL_MOUNT,
null /* this warning is global */
)
// root mount override from ./global.ts in installCompatMount
return i.ctx._compat_mount || NOOP
},
$destroy: i => {
assertCompatEnabled(DeprecationTypes.INSTANCE_DESTROY, i)
// root destroy override from ./global.ts in installCompatMount
return i.ctx._compat_destroy || NOOP
},
// overrides existing accessor
$slots: i => {
if (
isCompatEnabled(DeprecationTypes.RENDER_FUNCTION, i) &&
i.render &&
i.render._compatWrapped
) {
return new Proxy(i.slots, legacySlotProxyHandlers)
}
return __DEV__ ? shallowReadonly(i.slots) : i.slots
},
$scopedSlots: i => {
assertCompatEnabled(DeprecationTypes.INSTANCE_SCOPED_SLOTS, i)
const res: InternalSlots = {}
for (const key in i.slots) {
const fn = i.slots[key]!
if (!(fn as ContextualRenderFn)._ns /* non-scoped slot */) {
res[key] = fn
}
}
return res
},
$on: i => on.bind(null, i),
$once: i => once.bind(null, i),
$off: i => off.bind(null, i),
$children: getCompatChildren,
$listeners: getCompatListeners
} as PublicPropertiesMap)
/* istanbul ignore if */
if (isCompatEnabled(DeprecationTypes.PRIVATE_APIS, null)) {
extend(map, {
// needed by many libs / render fns
$vnode: i => i.vnode,
// inject additional properties into $options for compat
// e.g. vuex needs this.$options.parent
$options: i => {
const res = extend({}, resolveMergedOptions(i))
res.parent = i.proxy!.$parent
res.propsData = i.vnode.props
return res
},
// some private properties that are likely accessed...
_self: i => i.proxy,
_uid: i => i.uid,
_data: i => i.data,
_isMounted: i => i.isMounted,
_isDestroyed: i => i.isUnmounted,
// v2 render helpers
$createElement: () => compatH,
_c: () => compatH,
_o: () => legacyMarkOnce,
_n: () => looseToNumber,
_s: () => toDisplayString,
_l: () => renderList,
_t: i => legacyRenderSlot.bind(null, i),
_q: () => looseEqual,
_i: () => looseIndexOf,
_m: i => legacyRenderStatic.bind(null, i),
_f: () => resolveFilter,
_k: i => legacyCheckKeyCodes.bind(null, i),
_b: () => legacyBindObjectProps,
_v: () => createTextVNode,
_e: () => createCommentVNode,
_u: () => legacyresolveScopedSlots,
_g: () => legacyBindObjectListeners,
_d: () => legacyBindDynamicKeys,
_p: () => legacyPrependModifier
} as PublicPropertiesMap)
}
}