103 packages found

    Function argument validation for humans

    published 1.0.0 3 months ago
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    Enhances a JavaScript class by adding an is<Class> property to compare types between realms.

    published 1.1.0 4 years ago
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    Determine the name of a value's constructor.

    published 0.0.8 7 months ago
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    Test if a value is a regular expression.

    published 0.0.7 7 months ago
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    Create custom JavaScript errors that also match instanceof.

    published 2.1.2 2 years ago
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    Implement prototypical inheritance by replacing the prototype of one constructor with the prototype of another constructor.

    published 0.0.8 7 months ago
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    Get the type of something. Seriously.

    published 1.3.0 6 years ago
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    Define errors without frills, but with stack traces and instanceof support.

    published 1.1.0 7 years ago
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    Module for type detection

    published 0.0.10 9 years ago
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    Test whether a value has in its prototype chain a specified constructor as a prototype property.

    published 0.0.8 7 months ago
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    Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

    published 7.18.0 a year ago
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    Get the type of something. Seriously.

    published 1.1.0 7 years ago
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    Workaround for subclassing errors. Both instanceof and stack are functional.

    published 0.1.1 7 years ago
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    Extended JavaScript Type Validator

    published 1.0.4 3 years ago
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    Elegant and battle-tested validation library for type-safe input data (for TypeScript and Flow)

    published 2.0.1 4 months ago
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    JSON type of a value

    published 1.0.0 6 years ago
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    A javascript library for determine whether a object is an instantiated of a class that implements an interface

    published 1.0.1 5 years ago
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    Inherit from Error without performance penalties, instanceof behaves as expected and the error stack is correct

    published 1.0.3 8 years ago
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    typyts is a library to safely access nested object.

    published 1.0.5 2 months ago
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