TypeScript utilities

JSON type

export type json =
  | string
  | number
  | boolean
  | null
  | json[]
  | { [key: string]: json };

interface JSON {
  /**
   * Converts a JavaScript Object Notation (JSON) string into an object.
   * @param text A valid JSON string.
   * @param reviver A function that transforms the results. This function is called for each member of the object.
   * If a member contains nested objects, the nested objects are transformed before the parent object is.
   * @throws {SyntaxError} If `text` is not valid JSON.
   */
  parse(
    text: string,
    reviver: (this: any, key: string, value: any) => any,
  ): unkown;
  parse(text: string): json;
  /**
   * Converts a JavaScript value to a JavaScript Object Notation (JSON) string.
   * @param value A JavaScript value, usually an object or array, to be converted.
   * @param replacer A function that transforms the results.
   * @param space Adds indentation, white space, and line break characters to the return-value JSON text to make it easier to read.
   * @throws {TypeError} If a circular reference or a BigInt value is found.
   */
  stringify(
    value: any,
    replacer: (this: any, key: string, value: any) => any,
    space?: string | number,
  ): string;
  stringify(value: json): string;
  stringify(value: json, replacer: undefined, space?: string | number): string;
  /**
   * Converts a JavaScript value to a JavaScript Object Notation (JSON) string.
   * @param value A JavaScript value, usually an object or array, to be converted.
   * @param replacer An array of strings and numbers that acts as an approved list for selecting the object properties that will be stringified.
   * @param space Adds indentation, white space, and line break characters to the return-value JSON text to make it easier to read.
   * @throws {TypeError} If a circular reference or a BigInt value is found.
   */
  stringify(
    value: any,
    replacer: (number | string)[] | null,
    space?: string | number,
  ): string;
}

interface Body {
  /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Request/json) */
  json(): Promise<json>;
}

interface PushMessageData {
  /** [MDN Reference](https://developer.mozilla.org/en-US/docs/Web/API/PushMessageData/json) */
  json(): json;
}