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[英]How do I type the values of an object's fields with a specific subset of keys?
[英]How to type an object whose keys are a subset of the keys of the another type
我有这样的类型:
type Metadata = {
name: string;
size: number;
date: string;
language: string;
formattedName: string;
normalizedDate: string
};
现在我需要建立这个常量:
const main = {
name: ["main", "master"],
size: ["size"],
date: ["date"],
language: ["lang", "language"]
} as ??? // as Record<keyof Metadata, string[]>;
这是一个 object,其键是元数据类型键的子集,值是字符串数组。 我怎样才能输入main
的object? 我试过Partials(Metadata)
但它似乎不对。 哪个是正确的方法?
您可以说此类型必须“满足”或至少可分配给另一种类型,而无需在 4.9+ 中使用新的satisfies
关键字实际覆盖推断的类型信息:
const main = {
name: ["main", "master"],
size: ["size"],
date: ["date"],
language: ["lang", "language"]
} satisfies Partial<Record<keyof Metadata, string[]>>;
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