217 packages found
Description
exists and allExist functions. plain and simple
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util for validation that object has defined props
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Remove undefined variables from a GraphQL query
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If value is null or undefined, it sets a default value instead.
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A stateless implementation of the maybe monad
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Try to parse a string as JSON and return undefined on failure
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- invalid
- circular
- json
- parse
- stringify
- serialize
- parsing
- serialization
- stringification
- try
- catch
- try/catch
- exception
- exceptions
- View more
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Description
Optional chaining with a recursive ES6 Proxy
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- optional
- chaining
- never undefined
- undefined
- no undefined
- nested
- nested property
- property access
- properties
- object properties
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Check for a valid Number value.
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Check if a value is undefined or not.
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Disallow undefined property access in JavaScript
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Check if a variable in a nested object is defined and optionally also check its type. Useful for verifying API responses.
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Absent checks existence of variable, properties or items in a collection.
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remove null/undefined values from objects
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Check if `this` is truthy.
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Returns true if the given is falsey (according to JavaScript) or matches a 'falsey' keyword.
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Returns whether or not the passed arguments are defined - ie. not undefined
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undefined is not a function and it's likely to remain so forever
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All imaginable type checking utils with their negation
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Simple set of functions to check variables. Includes check of undefined / defined / defined and not null / defined and not empty / is number / is function is object
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- check
- tool
- undefined
- is defined
- isnotnull
- is not null
- is not empty
- is object
- is function
- is number
- check number
- check object
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Description
Boilerplate-free Enzyme testing