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6000 packages found

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

published 2.0.3 4 months ago
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Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.

published 1.1.13 5 months ago
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Is this value a JS SharedArrayBuffer?

published 1.0.3 4 months ago
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Is this value a JS ArrayBuffer?

published 3.0.4 5 months ago
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Is this value a JS Set? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

published 2.0.3 3 months ago
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Is this value a JS Map? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

published 2.0.3 3 months ago
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Is this value a JS WeakSet? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

published 2.0.3 3 months ago
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Is this value a JS WeakMap? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

published 2.0.2 3 months ago
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Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.

published 3.0.5 8 months ago
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Returns true if a value has the characteristics of a valid JavaScript data descriptor.

published 2.1.3 8 months ago
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Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.

published 3.1.1 8 months ago
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ES2015-compliant shim for Object.is - differentiates between -0 and +0

published 1.1.6 4 months ago
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Check if something is a Node.js stream

published 4.0.1 4 months ago
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Is this value an ES BigInt?

published 1.0.4 3 years ago
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Determine if a value is an ES6 Symbol or not.

published 1.0.4 3 years ago
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Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag

published 1.1.4 3 years ago
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Check if the character represented by a given Unicode code point is fullwidth

published 5.0.0 8 months ago
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Returns true if a string has an extglob.

published 2.1.1 8 years ago
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Detect the file type of a Buffer/Uint8Array/ArrayBuffer

published 19.0.0 5 months ago
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Function argument validation for humans

published 2.0.0 a month ago
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