元素隐式具有“any”类型，因为“any”类型的表达式不能用于索引类型

Question

我已经解决了许多其他有类似错误的问题，但没有看到我的代码有什么问题。你能确定如何修复ts(7053)错误。我收到的完整错误是Element implicitly has an 'any' type because expression of type 'string' can't be used to index type '{ card: number; dialog: number; navigation: number; layer: number; blanket: number; modal: number; flag: number; spotlight: number; tooltip: number; }'.代码是const zIndexToName: Record<number, string> = Object.keys(layerIndex).reduce(  (acc: Record<number, string>, name: string) => {    const value: number = layerIndex[name]();    acc[value] = name;    return acc;  },  {});鉴于，layerIndex是export const layerIndex = {  card: 100,  dialog: 300,  navigation: 200,  layer: 400,  blanket: 500,  modal: 510,  flag: 600,  spotlight: 700,  tooltip: 800};我可以全部切换string到any但得到相同的错误，Element implicitly has an 'any' type because expression of type 'any' can't be used to index typeconst zIndexToName: Record<number, any> = Object.keys(layerIndex).reduce(  (acc: Record<number, any>, name: any) => {    const value: number = layerIndex[name]();    acc[value] = name;    return acc;  },  {});

Answer 1

您缺少 的索引类型layerIndex。

export const layerIndex: { [key: string]: number }

我认为对号码的函数调用是错误的。它应该是

 const value: number = layerIndex[name];