VSCode 哈希图自动完成功能不起作用

Question

我不确定我在哪里做错了。这是我的代码。

type.d.ts:

type _MaterialTable = {
    weight: number
    price: number
}
type Material = {
    [index: string]: _MaterialTable
}

test.js:

/** @type {Material} */
WeightTable = {};
/** @type {map<string, _MaterialTable} */
WeightTable2 = {}

const x1 = WeightTable['test'];
const x2 = WeightTable2['test'];

The result was always any type.不是_MaterialTable类型。

我该如何正确键入？谢谢