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1189 packages found

is-negative-zero

Is this value negative zero? === will lie to you

published 2.0.3 2 months ago

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is-number

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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is-nan

ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.

published 1.3.2 3 years ago

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kind-of

Get the native type of a value.

published 6.0.3 4 years ago

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@alwatr/is-number

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 1.0.5 3 days ago

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@stdlib/assert-is-number

Test if a value is a number.

published 0.2.1 2 months ago

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@sigma-js/complexes

Provides calculation functions related to complex numbers.

published 1.0.0 3 months ago

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@sigma-js/primes

JavaScript library for efficient prime number detection and arithmetic, with customizable algorithms for large numbers.

published 1.0.3 6 months ago

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@stdlib/math-base-assert-is-nan

Test if a double-precision floating-point numeric value is NaN.

published 0.2.1 2 months ago

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is-primitive

Returns `true` if the value is a primitive.

published 3.0.1 6 years ago

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number.isnan

ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.

published 1.0.0 2 years ago

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@stdlib/math-base-assert-is-infinite

Test if a double-precision floating-point numeric value is infinite.

published 0.2.1 2 months ago

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@stdlib/assert-is-nonnegative-number

Test if a value is a number having a nonnegative value.

published 0.2.1 2 months ago

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@stdlib/assert-is-positive-number

Test if a value is a number having a positive value.

published 0.2.1 2 months ago

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@stdlib/assert-is-positive-integer

Test if a value is a number having a positive integer value.

published 0.2.1 2 months ago

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@voidvolker/is

Set of shortands of Object.prototype.toString for fast and simple type check

published 1.0.1 7 months ago

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@stdlib/assert-is-nonnegative-integer

Test if a value is a number having a nonnegative integer value.

published 0.2.1 2 months ago

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@stdlib/assert-is-integer

Test if a value is a number having an integer value.

published 0.2.1 2 months ago

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gundam5

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.

published 1.1.4 2 months ago

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@stdlib/assert-is-number-array

Test if a value is an array-like object of numbers.

published 0.2.1 2 months ago

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