@toolpad/utils/json.js

Shared utilities used by Toolpad packages.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getCircularReplacer = getCircularReplacer;
exports.replaceRecursive = replaceRecursive;
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Cyclic_object_value#circular_references
function getCircularReplacer() {
  const ancestors = [];
  return function replacer(key, value) {
    if (typeof value !== 'object' || value === null) {
      return value;
    }
    // `this` is the object that value is contained in,
    // i.e., its direct parent.
    while (ancestors.length > 0 && ancestors.at(-1) !== this) {
      ancestors.pop();
    }
    if (ancestors.includes(value)) {
      return '[Circular]';
    }
    ancestors.push(value);
    return value;
  };
}
function replaceRecursiveImpl(obj, replacer) {
  if (Array.isArray(obj)) {
    return obj.map((item, i) => {
      const newItem = replacer.call(obj, i, item);
      return replaceRecursiveImpl(newItem, replacer);
    });
  }
  if (obj && typeof obj === 'object') {
    return Object.fromEntries(Object.entries(obj).map(([key, value]) => {
      const newValue = replacer.call(obj, key, value);
      return [key, replaceRecursiveImpl(newValue, replacer)];
    }));
  }
  return obj;
}

// Replaces nested properties using the same semantics as JSON.stringify
function replaceRecursive(obj, replacer) {
  return replaceRecursiveImpl({
    '': obj
  }, replacer)[''];
}