1890 packages found

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Description

Runtime validation and processing of JavaScript types

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published 2.0.09 months ago
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Description

Get the native type of a value.

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published 6.0.36 months ago
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Detect the file type of a Buffer/Uint8Array/ArrayBuffer

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published 14.6.223 days ago
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ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.

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published 1.2.18 months ago
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Description

Media Type Database

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published 1.44.02 months ago
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Check if a value is a plain object

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published 2.1.06 months ago
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A little library for asserting types and values.

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published 11.1.26 months ago
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Description

Check if a string or buffer is SVG

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published 4.2.16 months ago
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Description

the definitive JavaScript type testing library

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published 3.3.02 years ago
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Description

Determine if an object is a Stream

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published 0.1.25 years ago
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Description

type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.

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published 0.4.03 months ago
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Description

unist utility to select nodes with CSS-like selectors

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published 3.0.15 months ago
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Description

unist utility to check if a node passes a test

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published 4.0.25 months ago
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Description

Stringify an object/array like JSON.stringify just without all the double-quotes

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published 3.3.02 years ago
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Description

Function argument validation for humans

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published 0.17.04 months ago
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Description

Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.

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published 7.0.02 years ago
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Description

Avro for JavaScript

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published 5.4.213 months ago
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Description

Check if something is a Node.js stream

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published 2.0.0a year ago