How to use the cloneDeepWith function from lodash

Find comprehensive JavaScript lodash.cloneDeepWith code examples handpicked from public code repositorys.

lodash.cloneDeepWith creates a deep clone of an object with a customizer function.

lodash-contrib.commonjs.js

53
54
55
56
57
58
59
60
61
62
module.exports.chunkAll            = _.chunkAll;
module.exports.chunkContrib        = _.chunkContrib;
module.exports.clamp               = _.clamp;
module.exports.clone               = _.clone;
module.exports.cloneDeep           = _.cloneDeep;
module.exports.cloneDeepWith       = _.cloneDeepWith;
module.exports.cloneWith           = _.cloneWith;
module.exports.collate             = _.collate;
module.exports.compact             = _.compact;
module.exports.comparator          = _.comparator;

122

+ 92 other calls in file

Document.spec.js

GitHub: dashpay/platform

100
101
102
103
104
105
106
107
108
109
  $createdAt: now,
  $updatedAt: now,
};

document = new ExtendedDocument(rawDocument, dataContract);
rawDocumentJs = lodash.cloneDeepWith(rawDocument);
rawDocumentJs.$id = jsId;
rawDocumentJs.$ownerId = jsOwnerId;

rawDocumentJs.$dataContractId = dataContractJs.id;

How does lodash.cloneDeepWith work?

lodash.cloneDeepWith is a utility function provided by the Lodash library that creates a deep clone of a given object, applying a customizer function to transform certain properties and values during the cloning process. The customizer function is invoked with up to four arguments: the value to be cloned, its corresponding key, the parent object, and the stack of objects being cloned. If the customizer function returns undefined, the default cloning behavior is applied, otherwise the returned value is used as the cloned value.

utils.js

GitHub: oracle/nosql-node-sdk

170
171
172
173
174
175
176
177
178
179
    return new Promise(resolve => setTimeout(resolve, ms));
}

static deepCopy(obj) {
    //cloneDeep has a bug in that it doesn't actually clone Buffers.
    return _.cloneDeepWith(obj, val => {
        if (Buffer.isBuffer(val)) {
            return _.clone(val);
        }
    });

lodash.js

GitHub: mdmarufsarker/lodash

371
372
373
374
375
376
377
378
379
380
381
382
383
console.log(clone); // => { 'a': 1 }


const cloneDeep = _.cloneDeep({ 'a': 1 });
console.log(cloneDeep); // => { 'a': 1 }


const cloneDeepWith = _.cloneDeepWith({ 'a': 1 }, value => value === 1 ? 2 : value);
console.log(cloneDeepWith); // => { 'a': 2 }


const cloneWith = _.cloneWith({ 'a': 1 }, value => value === 1 ? 2 : value);
console.log(cloneWith); // => { 'a': 2 }

+ 15 other calls in file

Ai Example

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
const _ = require("lodash");

// An object with nested objects
const originalObject = {
  a: "value1",
  b: {
    c: "value2",
    d: "value3",
  },
  e: {
    f: "value4",
  },
};

// A function to modify values during cloning
function customizer(value) {
  // if value is a string, capitalize it
  if (_.isString(value)) {
    return _.capitalize(value);
  }
  // otherwise, return the original value
  return value;
}

// Clone the object with a customizer function
const clonedObject = _.cloneDeepWith(originalObject, customizer);

console.log(clonedObject);
// Output: {
//   a: 'Value1',
//   b: {
//     c: 'Value2',
//     d: 'Value3'
//   },
//   e: {
//     f: 'Value4'
//   }
// }

In this example, lodash.cloneDeepWith is used to clone originalObject while applying a customizer function customizer that modifies the values during cloning. The function checks if the value is a string, and if so, capitalizes it. The cloned object is then logged to the console, showing the modified values.

openaps-storage.js

GitHub: monettiaps/giovanni

70
71
72
73
74
75
76
77
78
79
var wrapper = {
  findQuery: null
  , sortQuery: null
  , limitCount: null
  , find: function find (query) {
    query = _.cloneDeepWith(query, function booleanize (value) {
      //TODO: for some reason we're getting {$exists: NaN} instead of true/false
      if (value && _.isObject(value) && '$exists' in value) {
        return {$exists: true};
      }

+ 2 other calls in file

index.cjs

GitHub: vzakharov/vovas-utils-ts

139
140
141
142
143
144
145
146
147
148
args.forEach((arg) => {
  try {
    console.log(
      String(
        isPrimitive(arg) ? arg : _.isFunction(arg) ? arg.toString() : serializer[serializeAs](
          dontShrinkArrays ? arg : _.cloneDeepWith(arg, (value, key) => {
            if (_.isArray(value) && value.length > 3) {
              return _.sampleSize(value, 3);
            }
          })

+ 3 other calls in file

events.js

GitHub: sindeshiva/Test

29
30
31
32
33
34
35
36
37
38
39
const savedState = require('../saved_state')


const nullifyUnserializableValues = (obj) => {
  // nullify values that cannot be cloned
  // https://github.com/cypress-io/cypress/issues/6750
  return _.cloneDeepWith(obj, (val) => {
    if (_.isFunction(val)) {
      return null
    }
  })

Other functions in lodash

Sorted by popularity

lodash.get is the most popular function in lodash (7670 examples)

Other popular packages:

Home

About