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						- 'use strict';
 - /// <reference types="../types/index.d.ts" />
 - 
 - // (c) 2020-present Andrea Giammarchi
 - 
 - const {parse: $parse, stringify: $stringify} = JSON;
 - const {keys} = Object;
 - 
 - const Primitive = String;   // it could be Number
 - const primitive = 'string'; // it could be 'number'
 - 
 - const ignore = {};
 - const object = 'object';
 - 
 - const noop = (_, value) => value;
 - 
 - const primitives = value => (
 -   value instanceof Primitive ? Primitive(value) : value
 - );
 - 
 - const Primitives = (_, value) => (
 -   typeof value === primitive ? new Primitive(value) : value
 - );
 - 
 - const revive = (input, parsed, output, $) => {
 -   const lazy = [];
 -   for (let ke = keys(output), {length} = ke, y = 0; y < length; y++) {
 -     const k = ke[y];
 -     const value = output[k];
 -     if (value instanceof Primitive) {
 -       const tmp = input[value];
 -       if (typeof tmp === object && !parsed.has(tmp)) {
 -         parsed.add(tmp);
 -         output[k] = ignore;
 -         lazy.push({k, a: [input, parsed, tmp, $]});
 -       }
 -       else
 -         output[k] = $.call(output, k, tmp);
 -     }
 -     else if (output[k] !== ignore)
 -       output[k] = $.call(output, k, value);
 -   }
 -   for (let {length} = lazy, i = 0; i < length; i++) {
 -     const {k, a} = lazy[i];
 -     output[k] = $.call(output, k, revive.apply(null, a));
 -   }
 -   return output;
 - };
 - 
 - const set = (known, input, value) => {
 -   const index = Primitive(input.push(value) - 1);
 -   known.set(value, index);
 -   return index;
 - };
 - 
 - /**
 -  * Converts a specialized flatted string into a JS value.
 -  * @param {string} text
 -  * @param {(this: any, key: string, value: any) => any} [reviver]
 -  * @returns {any}
 -  */
 - const parse = (text, reviver) => {
 -   const input = $parse(text, Primitives).map(primitives);
 -   const value = input[0];
 -   const $ = reviver || noop;
 -   const tmp = typeof value === object && value ?
 -               revive(input, new Set, value, $) :
 -               value;
 -   return $.call({'': tmp}, '', tmp);
 - };
 - exports.parse = parse;
 - 
 - /**
 -  * Converts a JS value into a specialized flatted string.
 -  * @param {any} value
 -  * @param {((this: any, key: string, value: any) => any) | (string | number)[] | null | undefined} [replacer]
 -  * @param {string | number | undefined} [space]
 -  * @returns {string}
 -  */
 - const stringify = (value, replacer, space) => {
 -   const $ = replacer && typeof replacer === object ?
 -             (k, v) => (k === '' || -1 < replacer.indexOf(k) ? v : void 0) :
 -             (replacer || noop);
 -   const known = new Map;
 -   const input = [];
 -   const output = [];
 -   let i = +set(known, input, $.call({'': value}, '', value));
 -   let firstRun = !i;
 -   while (i < input.length) {
 -     firstRun = true;
 -     output[i] = $stringify(input[i++], replace, space);
 -   }
 -   return '[' + output.join(',') + ']';
 -   function replace(key, value) {
 -     if (firstRun) {
 -       firstRun = !firstRun;
 -       return value;
 -     }
 -     const after = $.call(this, key, value);
 -     switch (typeof after) {
 -       case object:
 -         if (after === null) return after;
 -       case primitive:
 -         return known.get(after) || set(known, input, after);
 -     }
 -     return after;
 -   }
 - };
 - exports.stringify = stringify;
 - 
 - /**
 -  * Converts a generic value into a JSON serializable object without losing recursion.
 -  * @param {any} value
 -  * @returns {any}
 -  */
 - const toJSON = value => $parse(stringify(value));
 - exports.toJSON = toJSON;
 - 
 - /**
 -  * Converts a previously serialized object with recursion into a recursive one.
 -  * @param {any} value
 -  * @returns {any}
 -  */
 - const fromJSON = value => parse($stringify(value));
 - exports.fromJSON = fromJSON;
 
 
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