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type-fest

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type-fest

A collection of essential TypeScript types

  • 4.30.0
  • latest
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  • npm
  • Socket score

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Weekly downloads
179M
decreased by-12.06%
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1
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What is type-fest?

The type-fest package provides a collection of essential TypeScript types for use in a wide range of applications. It includes utility types, primitive types, and complex object types to enhance TypeScript's static typing capabilities.

What are type-fest's main functionalities?

Primitive types

Includes types like LiteralUnion, Primitive, and Promisable, which help with defining literals, primitive values, and promise-like structures.

{"isPrimitive": true}

Basic utilities

Provides utility types such as Except, Mutable, ReadonlyDeep, and many others that help manipulate and transform types in various ways.

{"isEmptyArray": array.length === 0}

Object types

Contains types for working with objects, such as Merge and RequireAtLeastOne, which assist in merging types and ensuring at least one property is present, respectively.

{"isObjectClean": Object.keys(object).length === 0 && object.constructor === Object}

Conditional types

Includes conditional types like ConditionalExcept and ConditionalKeys, which apply conditions to filter keys or properties of types.

{"isTruthy": T extends false | '' | 0 | null | undefined ? false : true}

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Package last updated on 02 Dec 2024

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