import { ref} from 'vue';
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export const isUndefined = (val: any): val is undefined => val === undefined;
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export const isBoolean = (val: any): val is boolean => typeof val === 'boolean';
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export const isNumber = (val: any): val is number => typeof val === 'number';
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export const isFilledArray = (val: any) => Array.isArray(val) && val.length > 0;
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/**
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*
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* @param _comp 组件构造函数
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* @returns 组件 ref
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* @example const formRef = useCompRef(ElForm);
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*/
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export const useCompRef = <T extends abstract new (...args: any) => any>(_comp: T) => ref<InstanceType<T>>();
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/**
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* 深层次 Partial
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*/
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export type DeepPartial<T> = T extends object ? {
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[P in keyof T]?: DeepPartial<T[P]>;
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} : T;
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