import { VNode } from './vnode'
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import { Data, UnionToIntersection } from './common'
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import { Vue } from './vue'
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export type Slot = (...args: any[]) => VNode[]
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export type Slots = Record<string, Slot | undefined>
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export type ObjectEmitsOptions = Record<
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string,
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((...args: any[]) => any) | null
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>
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export type EmitsOptions = ObjectEmitsOptions | string[]
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export type EmitFn<
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Options = ObjectEmitsOptions,
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Event extends keyof Options = keyof Options,
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ReturnType extends void | Vue = void
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> = Options extends Array<infer V>
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? (event: V, ...args: any[]) => ReturnType
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: {} extends Options // if the emit is empty object (usually the default value for emit) should be converted to function
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? (event: string, ...args: any[]) => ReturnType
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: UnionToIntersection<
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{
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[key in Event]: Options[key] extends (...args: infer Args) => any
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? (event: key, ...args: Args) => ReturnType
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: (event: key, ...args: any[]) => ReturnType
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}[Event]
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>
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export interface SetupContext<E extends EmitsOptions = {}> {
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attrs: Data
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/**
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* Equivalent of `this.$listeners`, which is Vue 2 only.
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*/
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listeners: Record<string, Function | Function[]>
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slots: Slots
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emit: EmitFn<E>
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expose(exposed?: Record<string, any>): void
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}
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