JSON 操作不丢失类型

json.d.ts

declare class Stringified<T> extends String {
    private ___stringified: T
}

interface JSON {
    stringify<T>(
        value: T,
        replacer?: (key: string, value: any) => any,
        space?: string | number
    ): string & Stringified<T>
    parse<T>(text: Stringified<T>, reviver?: (key: any, value: any) => any): T
    parse(text: string, reviver?: (key: any, value: any) => any): any
}

demo: https://tsplay.dev/json-string-type