576 packages found

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Description

A little library for asserting types and values.

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published 11.1.2a month ago
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Description

Get the native type of a value.

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published 6.0.3a month ago
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Check if a value is a plain object

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published 2.1.0a month ago
M
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Description

Detect the file type of a Buffer/Uint8Array/ArrayBuffer

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published 14.1.33 days ago
M
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Description

Runs typescript type checker and linter on separate process.

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published 4.0.520 hours ago
M
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Description

Check if something is a Node.js stream

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published 2.0.010 months ago
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M
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Description

Check if a string or buffer is SVG

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published 4.2.1a month ago
M
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Description

Returns true if an object was created by the `Object` constructor.

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published 3.0.010 months ago
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Description

Returns true if the value is an object and not an array or null.

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published 4.0.010 months ago
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Description

unist utility to check if a node passes a test

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published 4.0.210 days ago
M
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Description

Check if a path is a file, directory, or symlink

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published 4.0.0a year ago
M
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Description

Check if a value is an object

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published 2.0.010 months ago
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Description

Infer the content-type of a request.

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published 1.6.1810 months ago
M
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Description

Check if something is a promise

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published 3.0.08 months ago
M
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Description

Function argument validation for humans

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published 0.17.05 days 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

Check if a value is a regular expression

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published 2.1.010 months ago
M
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Description

A type checking library where each exported function returns either true or false and does not throw. Also added tests.

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published 2.0.49 months ago
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Description

Check if something is a generator function

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published 2.1.0a year ago