// copy from element-plus import type { CSSProperties, Plugin } from 'vue'; type OptionalKeys<T extends Record<string, unknown>> = { [K in keyof T]: T extends Record<K, T[K]> ? never : K; }[keyof T]; type RequiredKeys<T extends Record<string, unknown>> = Exclude<keyof T, OptionalKeys<T>>; type MonoArgEmitter<T, Keys extends keyof T> = <K extends Keys>(evt: K, arg?: T[K]) => void; type BiArgEmitter<T, Keys extends keyof T> = <K extends Keys>(evt: K, arg: T[K]) => void; export type EventEmitter<T extends Record<string, unknown>> = MonoArgEmitter<T, OptionalKeys<T>> & BiArgEmitter<T, RequiredKeys<T>>; export type AnyFunction<T> = (...args: any[]) => T; export type PartialReturnType<T extends (...args: unknown[]) => unknown> = Partial<ReturnType<T>>; export type SFCWithInstall<T> = T & Plugin; export type Nullable<T> = T | null; export type RefElement = Nullable<HTMLElement>; export type CustomizedHTMLElement<T> = HTMLElement & T; export type Indexable<T> = { [key: string]: T; }; export type Hash<T> = Indexable<T>; export type TimeoutHandle = ReturnType<typeof global.setTimeout>; export type ComponentSize = 'large' | 'medium' | 'small' | 'mini'; export type StyleValue = string | CSSProperties | Array<StyleValue>; export type Mutable<T> = { -readonly [P in keyof T]: T[P] };