obj-walker/dist/refs.js

Walk or map over objects in a depth-first preorder or postorder manner.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.deref = exports.addRefs = void 0;
const json_decycle_1 = require("json-decycle");
const walker_1 = require("./walker");
/**
 * Replace duplicate objects refs with pointers to the first
 * object seen.
 */
const addRefs = (obj, options) => {
    const fn = (0, json_decycle_1.decycle)();
    const mapper = ({ key, val, parents }) => fn.call(parents[0], key ?? '', val);
    return (0, walker_1.map)(obj, mapper, { ...options, jsonCompat: true });
};
exports.addRefs = addRefs;
/**
 * Rehydrate objects by replacing refs with actual objects.
 */
const deref = (obj, options) => {
    const fn = (0, json_decycle_1.retrocycle)();
    const walkFn = ({ parents, key, val }) => {
        fn.call(parents[0], key ?? '', val);
    };
    return (0, walker_1.walkEach)(obj, walkFn, {
        ...options,
        postOrder: true,
        jsonCompat: true,
    });
};
exports.deref = deref;