你首先需要一个类型名称（字符串）到TypeScript类型的Map：

interface TypeMap {
    text: string;
    select: CustomType;
}

然后，你可以定义一个类型，它可以接受一个字段数组并从它们创建一个类型，使用mapped types：

type TypeFromArray<A extends readonly { id: string; value: string; type: keyof TypeMap }[]> = {
    [K in A[number] as K["id"]]: TypeMap[K["type"]];
};

const fields = [
    { id: "myId", value: "", type: "text" },
    { id: "myId2", value: "", type: "select" },
] as const; // note the 'as const'

type X = TypeFromArray<typeof fields>;
//   ^? { myId: string; myId2: CustomType }

同样，也可以创建类型来变换对象：

type TypeFromObject<O extends Readonly<Record<string, { value: string; type: keyof TypeMap }>>> = {
    -readonly [K in keyof O]: TypeMap[O[K]["type"]];
};

const fields = {
    myId: { value: "", type: "text" },
    myId2: { value: "", type: "select" },
} as const; // note the 'as const'

type X = TypeFromObject<typeof fields>;
//   ^? { myId: string; myId2: CustomType }

Playground