41 packages found

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Description

Get the native type of a value.

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published 6.0.39 months ago
M
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Description

Returns `true` if the string is upper case only.

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published 2.0.1a year ago
M
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Description

Returns `true` if the string is lower case only

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published 2.0.1a year ago
M
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Description

Isomorphic, functional type-checking for Javascript

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published 6.0.15 months ago
M
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Description

Returns `true` if the value is a primitive.

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published 3.0.12 years ago
M
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Description

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

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published 7.16.02 months ago
M
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Description

It's the computer turned on? You never be sure!

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published 1.0.22 months ago
M
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Description

Curried TypeScript type guards for primitive types and classes

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published 0.7.04 months ago
M
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Description

Check if an URL is a valid HTTP URL.

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published 2.2.18 days ago
M
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Description

Returns an object with a `negated` boolean and the `!` stripped from negation patterns. Also respects extglobs.

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published 1.0.04 years ago
M
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Description

List of all javascript types. Used and useful for checking, validation, sanitizing and testing. Like isStream, isPromise, isWeakset and etc.

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published 1.0.15 years ago
M
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Description

Ask for a type, returns a true/false as answer.

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published 1.0.15 years ago
M
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Description

Boolean data type has two possible truth values to represent logic.

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published 1.3.27a month ago
M
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Description

Check whether a value is a `Generator` or `GeneratorFunction`. The `co` way, more strict checking. Always return boolean true or false, never null or undefined.

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published 1.0.25 years ago
M
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Description

Checks if value is boolean.

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published 1.3.27a month ago
M
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Description

Checks if value is boolean.

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published 1.3.27a month ago
M
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Description

Ask for a type, returns a true/false as answer.

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published 1.0.05 years ago
M
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Description

A robust micro library for type checking. Defers to constructs' internal `[[Class]]` property rather than duck typing for excellent type detection and to avoid triggering false positives.

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published 1.0.16 years ago
M
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Description

Validates if a value is a boolean primitive.

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published 1.0.06 years ago
M
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Description

Check if a string is a datetime string.

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published 1.0.14 years ago