217 packages found
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Validate the type of object's properties.
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ntnl [not null]: a tiny js library which sanitizes null / undefined values from objects by replacing them with provided values
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Coalesce for JavaScript. Returns the first value that is not undefined or null.
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Safe Window Getters
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Monadic library to help with Typescripts --strictNullChecks
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Check if a given value is empty in JS extending his "truthy" and "falsy" nature
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Replace a blank value with fallback value.
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checks if foo is not defined, i.e. undefined, null, an empty string, array, object or NaN
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A library to have a generic typescript definition for object presence.
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Check if something exists (e.g. not null || undefined)
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Utilities to determine if string is any of the following null, empty, undefined, NaN, or whitespace.
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Clean objects recursively, deleting undefined & null or falsy properties
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Assert that the passed arguments are defined.
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Check whether the provided value is undefined.
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Simple utility function for checking isDefined for complex objects with long property paths
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Validate the type of array's items.
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Checks if the given value is null or undefined
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plain implementation of Maybe (Optional, Nullable) monad
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Check if a variable is undefined in javascript!
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exists and allExist functions. plain and simple