vue+ts当push数组报错is not assignable to parameter of type 'never'

Question

这是什么意思呀。我哪步做错了吗？

Answer 1

因为你前面 files 没声明类型。

type FileItem = {
    name: any;
    uploadPercentage: number;
}

const state = reactive({
    files: [] as FileItem[]
})