63 packages found

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Description

Type check values: `is.string('🦄') //=> true`

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published 0.13.018 days ago
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Description

Function argument validation for humans

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published 0.8.0a month ago
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Description

Enhances a JavaScript class by adding an is<Class> property to compare types between realms.

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published 1.1.08 months ago
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Description

Define errors without frills, but with stack traces and instanceof support.

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published 1.1.03 years ago
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Description

Minimal JavaScript type checking library

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published 2.0.18 months ago
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Description

Get the type of something. Seriously.

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published 1.1.03 years ago
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Description

The instanceof mechanism cross package/module versions.

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published 1.0.110 months ago
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Description

Better 'typeof'. Detects real type of the objects like 'Array()', 'new Number(1)', 'new Boolean(true)', etc.

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published 2.0.03 months ago
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Description

Get the type of something. Seriously.

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published 1.3.03 years ago
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Description

Check if a value is an error constructor

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published 1.0.12 years ago
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Description

Validates if a value is a Date object.

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published 1.0.34 years ago
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Validates if a value is a regular expression.

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published 1.0.34 years ago
M
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Description

Variable type comparison

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published 1.0.37 months ago
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Description

Like instanceof, but uses class name strings.

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published 1.0.19 months ago
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Description

Determine if a value is an instance of a type

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published 1.0.29 months ago
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Description

Create mixins which work with instanceof (friendly for unit tests).

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published 3.2.17 months ago
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Description

Check if the given value is of the particular type or types.

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published 2.2.05 months ago
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M
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Description

Provides functionality for type checking

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published 1.5.224 days ago
M
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Description

Additional ESLint rules.

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published 7.0.0a month ago