types.ts
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// 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] };