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295 packages found
Used to check if some of the arguments are null or undefined.
Magmadb, a user-friendly solution for storing and accessing data.
Test if a value is a JavaScript primitive.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- valid
- primitive
- string
- number
- null
- undefined
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not nil map - Map a function over nullable value
Null Logger transport for winston, it basically swallow all your log so nothing is logged, good for test environment.
Helps you confirm the existence of specified falsy values (e.g. 0)
Convert any value into a boolean value.
removes nulls and undefineds from an object
> A simple function to validate if nested object properties exist.
Optionals for JS
When you need validate the variable data type
Safe chaining of object properties and functions using ES2015 Proxy.
Return the first argument that is `!= null`
Maybe monad for JavaScript.
Test if a value is undefined or null.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- undefined
- void
- null
- is
- isundefined
- isnull
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Type safe variable checks
Pipe streams to /dev/null
Converts nullsy values to null (undefined, false, NaN), else returns the value