--- title: Top TypeScript Utility Functions You Need to Know description: TypeScript brings powerful static type checking and expressive types. One of the key strengths of TypeScript is its extensive collection of utility functions.... canonical: https://daily.dev/posts/top-typescript-utility-functions-you-need-to-know-y1ngkpcgh twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Top TypeScript Utility Functions You Need to Know | daily.dev og:description: TypeScript brings powerful static type checking and expressive types. One of the key strengths of TypeScript is its extensive collection of utility functions.... og:url: https://daily.dev/posts/top-typescript-utility-functions-you-need-to-know-y1ngkpcgh og:image: https://api.daily.dev/og/posts/y1NGkpCgH.png og:image:alt: Top TypeScript Utility Functions You Need to Know og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Top TypeScript Utility Functions You Need to Know **[Hacker Noon](https://daily.dev/sources/hackernoon)** · 1 min read · 139 upvotes · 10 comments ## Summary TypeScript brings powerful static type checking and expressive types. One of the key strengths of TypeScript is its extensive collection of utility functions. In this blog post, we will explore some of the most useful TypeScript utility functions that can greatly improve your programming experience. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@zataara** · 4 upvotes > Been working in TS for 2 years now and still hadn’t heard of 2 of these. Excited to add all these to my workflow. **@michaelho** · 1 upvotes > Time to add this to my work flow.I have tried Generic and different type of typescript feature.I still lots of things I didn't know. **@helge8** · 1 upvotes > Thought I'd find something more than just functions from TS docs :) **@nabwinsaud** · 1 upvotes > these are pretty amazing and i love these utility types where is partial Omit **@fractaltess179** · 1 upvotes > The one I find most useful is the ReturnType helper, which helps define dynamic types that automatically adjust whenever a function changes its return signature. This allows flexible and almost non-existent explicit typing while also catching all of the potential breaking points when building. ## Similar posts on daily.dev - [Don’t just attend KubeCon \+ CloudNativeCon, Merge Forward your experience\!](https://daily.dev/posts/don-t-just-attend-kubecon-cloudnativecon-merge-forward-your-experience--l0rpp73x8) · CNCF · 1 upvotes · 0 comments - [Announcing H2 2026 KCDs](https://daily.dev/posts/announcing-h2-2026-kcds-m96goajm1) · CNCF · 1 upvotes · 0 comments - [Two months of Open Community Groups](https://daily.dev/posts/two-months-of-open-community-groups-asf52zhbs) · CNCF · 0 upvotes · 0 comments - [CNCF Unveils Schedule for KubeCon \+ CloudNativeCon Europe 2026](https://daily.dev/posts/cncf-unveils-schedule-for-kubecon-cloudnativecon-europe-2026-ikhcoa5cb) · CNCF · 2 upvotes · 0 comments - [CNCF Debuts KubeCon \+ CloudNativeCon Japan 2026 Schedule](https://daily.dev/posts/cncf-debuts-kubecon-cloudnativecon-japan-2026-schedule-xp5pyudub) · CNCF · 1 upvotes · 0 comments --- Tags: [#javascript](https://daily.dev/tags/javascript), [#typescript](https://daily.dev/tags/typescript), [#webdev](https://daily.dev/tags/webdev) [View this post on daily.dev](https://daily.dev/posts/top-typescript-utility-functions-you-need-to-know-y1ngkpcgh) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Top TypeScript Utility Functions You Need to Know","url":"https://daily.dev/posts/top-typescript-utility-functions-you-need-to-know-y1ngkpcgh","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/top-typescript-utility-functions-you-need-to-know-y1ngkpcgh"},"datePublished":"2023-06-21T16:54:27.627Z","dateModified":"2023-08-12T02:15:39.133Z","description":"TypeScript brings powerful static type checking and expressive types. 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Excited to add all these to my workflow.","datePublished":"2023-06-24T04:35:59.114Z","url":"https://daily.dev/posts/y1NGkpCgH#c-7OY7NGfeh","author":{"@type":"Person","name":"Bryant MacMahon","url":"https://daily.dev/zataara","image":"https://avatars.githubusercontent.com/u/75229911?v=4"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":4}},{"@type":"Comment","text":"Time to add this to my work flow.I have tried Generic and different type of typescript feature.I still lots of things I didn’t know.","datePublished":"2023-06-25T18:08:25.488Z","url":"https://daily.dev/posts/y1NGkpCgH#c-PPwhIEUFb","author":{"@type":"Person","name":"MichaelHo","url":"https://daily.dev/michaelho","image":"https://avatars.githubusercontent.com/u/18046164?v=4"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1}},{"@type":"Comment","text":"Thought I’d find something more than just functions from TS docs :)","datePublished":"2023-07-03T22:49:24.899Z","url":"https://daily.dev/posts/y1NGkpCgH#c-GouOi2XHK","author":{"@type":"Person","name":"Helge Eight","url":"https://daily.dev/helge8","image":"https://media.daily.dev/image/upload/v1667655145/avatars/avatar_VPqwDpc0HcynUQEn2w9uu.jpg"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1}},{"@type":"Comment","text":"these are pretty amazing and i love these utility types where is partial Omit","datePublished":"2023-06-24T16:53:45.943Z","url":"https://daily.dev/posts/y1NGkpCgH#c-r4fyU7rWO","author":{"@type":"Person","name":"Nabin Saud","url":"https://daily.dev/nabwinsaud","image":"https://media.daily.dev/image/upload/s--hK1xb288--/f_auto/v1783182742/avatars/avatar_X5HOWMQGY0I3PuMHiav2k?_a=BAMAMicg0"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1}},{"@type":"Comment","text":"The one I find most useful is the ReturnType helper, which helps define dynamic types that automatically adjust whenever a function changes its return signature. This allows flexible and almost non-existent explicit typing while also catching all of the potential breaking points when building.","datePublished":"2023-06-30T12:53:30.817Z","url":"https://daily.dev/posts/y1NGkpCgH#c-113EsL9hi","author":{"@type":"Person","name":"Vilian Gerdjikov","url":"https://daily.dev/fractaltess179","image":"https://avatars.githubusercontent.com/u/75957529?v=4"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1}}]} ```