You Don't Need Lodash Underscore | List Of JavaScript Methods Which You Can Use Plugins

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You don’t (may not) need Lodash/Underscore

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Lodash and Underscore are great modern JavaScript utility libraries, and they are widely used by Front-end developers. However, when you are targeting modern browsers, you may find out that there are many methods which are already supported natively thanks to ECMAScript5 [ES5] and ECMAScript2015 [ES6]. If you want your project to require fewer dependencies, and you know your target browser clearly, then you may not need Lodash/Underscore.

You are welcome to contribute with more items provided below.

  • If you are targeting legacy JavaScript engine with those ES5 methods, you can use es5-shim
  • Please note that, the examples used below are just showing you the native alternative of performing certain tasks. For some functions, Lodash provides you more options than native built-ins. This list is not a 1:1 comparison.
  • Please send a PR if you want to add or modify the code. No need to open an issue unless it’s something big and you want to discuss.

Voice of Developers

Make use of native JavaScript object and array utilities before going big.

—Cody Lindley, Author of jQuery Cookbook and JavaScript Enlightenment

You probably don’t need Lodash. Nice List of JavaScript methods which you can use natively.

—Daniel Lamb, Computer Scientist, Technical Reviewer of Secrets of the JavaScript Ninja and Functional Programming in JavaScript

I guess not, but I want it.

—Tero Parviainen, Author of build-your-own-angular

I’ll admit, I’ve been guilty of overusing #lodash. Excellent resource.

—@therebelrobot, Maker of web things, Facilitator for Node.js/io.js

ESLint Plugin

NPM Version Downloads Build Status Coverage Status

If you’re using ESLint, you can install a plugin that will help you identify places in your codebase where you don’t (may not) need Lodash/Underscore.

Install the plugin …

npm install --save-dev eslint-plugin-you-dont-need-lodash-underscore

… then update your config

“extends” : [“plugin:you-dont-need-lodash-underscore/compatible”],

For more information, see Configuring the ESLint Plugin

Important

Note that, while many Lodash methods are null safe (e.g. _.keys, _.entries), this is not necessarily the case for their Native equivalent. If null safety is critical for your application, we suggest that you take extra precautions [e.g. consider using the native Object.keys as Object.keys(value || {})].

Quick Links

Array

  1. _.chunk
  2. _.compact
  3. _.concat
  4. _.difference
  5. _.drop
  6. _.dropRight
  7. _.fill
  8. _.find
  9. _.findIndex
  10. _.first
  11. _.flatten
  12. _.flattenDeep
  13. _.fromPairs
  14. _.head and _.tail
  15. _.indexOf
  16. _.intersection
  17. _.isArray
  18. _.isArrayBuffer
  19. _.join
  20. _.last
  21. _.lastIndexOf
  22. _.reverse
  23. _.slice
  24. _.without
  25. _.initial
  26. _.pull
  27. _.unionBy

Collection*

Important

Note that most native equivalents are array methods, and will not work with objects. If this functionality is needed and no object method is provided, then Lodash/Underscore might be the better option. Bear in mind however, that all iterable objects can easily be converted to an array by use of the spread operator.

  1. _.each
  2. _.every
  3. _.filter
  4. _.groupBy
  5. _.includes
  6. _.keyBy
  7. _.map
  8. _.minBy and _.maxBy
  9. _.orderBy
  10. _.pluck
  11. _.range
  12. _.reduce
  13. _.reduceRight
  14. _.reject
  15. _.size
  16. _.some
  17. _.sortBy
  18. _.uniq
  19. _.uniqWith

Function

  1. _.after
  2. _.bind
  3. _.debounce
  4. _.isFunction
  5. _.partial
  6. _.throttle

Lang

  1. _.castArray
  2. .cloneDeep
  3. _.gt
  4. _.gte
  5. _.isDate
  6. _.isEmpty
  7. _.isFinite
  8. _.isInteger
  9. _.isNaN
  10. _.isNil
  11. _.isNull
  12. _.isUndefined

Object

  1. _.assign
  2. _.defaults
  3. _.extend
  4. _.has
  5. _.get
  6. _.invert
  7. _.isPlainObject
  8. _.keys
  9. _.mapKeys
  10. _.omit
  11. _.pick
  12. _.pickBy
  13. _.toPairs
  14. _.values

String

  1. _.capitalize
  2. _.endsWith
  3. _.isString
  4. _.lowerFirst
  5. _.padStart and _.padEnd
  6. _.repeat
  7. _.replace
  8. _.split
  9. _.startsWith
  10. _.template
  11. _.toLower
  12. _.toUpper
  13. _.trim
  14. _.upperFirst

Util

  1. _.times

Number

  1. _.clamp
  2. _.inRange
  3. _.random

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