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/** * A range definition for any type of (orderable) value. * If a start or end is defined, a tuple can be used where the second item is a boolean * indicating whether that end is inclusive (true) or exclusive (false).<br/> * A Range of type T can have one of the following forms:<br/> * <br/> * - { end: T }<br/> * - { end: [T, boolean] }<br/> * - { start: T }<br/> * - { start: T, end: T }<br/> * - { start: T, end: [T, boolean] }<br/> * - { start: [T, boolean] }<br/> * - { start: [T, boolean], end: T }<br/> * - { start: [T, boolean], end: [T, boolean] }<br/> */export type Range<T> =  | { start: T | [T, boolean]; end?: T | [T, boolean]; amount?: undefined }  | { start?: T | [T, boolean]; end: T | [T, boolean]; amount?: undefined };
export namespace Range {  /**   * Simplifies a given `range` `Range` input for easier processing, by returning optional   * start and end ranges including whether they are inclusive or exclusive   * @param range - the `Range` to use   */  export function getNormalizedRange<T>(range: Range<T>): {    start?: [T, boolean] | undefined;    end?: [T, boolean] | undefined;  } {    let start: [T, boolean] | undefined = undefined;    let end: [T, boolean] | undefined = undefined;
    if (`start` in range && undefined !== range.start) {      if (        Array.isArray(range.start) &&        range.start.length === 2 &&        typeof range.start[1] === 'boolean'      ) {        start = range.start;      } else {        start = [range.start as T, true];      }    }    if (`end` in range && undefined !== range.end) {      if (        Array.isArray(range.end) &&        range.end.length === 2 &&        typeof range.end[1] === 'boolean'      ) {        end = range.end;      } else {        end = [range.end as T, true];      }    }
    return { start, end };  }}