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396 packages found

Determine if the JS environment has Symbol support. Supports spec, or shams.

published 1.0.3 2 years ago
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Determine if the JS environment has BigInt support.

published 1.0.2 2 years ago
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Returns true if an object was created by the `Object` constructor, or Object.create(null).

published 5.0.0 3 years ago
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Function argument validation for humans

published 1.1.1 a year ago
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Improved typeof detection for node.js and the browser.

published 4.0.8 6 years ago
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Get the native type of a value.

published 6.0.3 4 years ago
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Checks whether provided parameter looks like a number

published 1.0.8 7 years ago
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Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.

published 7.0.0 6 years ago
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Returns true if the value is an object and not an array or null.

published 4.0.0 5 years ago
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complete type checking for node

published 2.1.0 3 months ago
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A tiny and fast dynamic type checker/enforcer library

published 2.0.1 4 months ago
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A simple utility to Check the value is number or can convert to a number, for example string ' 123 ' can be converted to 123.

published 1.0.3 a month ago
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A vanilla JavaScript library for checking the type of variables in a more robust and accurate way than the typeof operator

published 4.0.1 3 months ago
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Determine the specification defined classification of an object.

published 0.2.1 8 days ago
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Deprecated. Utilities for ES3, most of which have been adopted or superseded in ES5.1. Adapted from Douglas Crockford's Remedial JavaScript

published 1.0.8 6 years ago
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A more type-sensitive typeof, make type detection easier

published 1.1.1 3 months ago
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A tiny javascript type testing tool

published 1.2.1 2 months ago
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Type assertions aka less-broken `typeof`

published 2.0.0 3 months ago
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Check if a value is valid 'typeof'

published 1.0.0 6 months ago
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