The modern build of lodash’s `_.isUndefined` as a module.
return the first argument that is `!== undefined`
Basic sort algorithm that has similar behavior to Array.prototype.sort for null and undefined, but also allows sorting by an object property.
Replace references to `undefined` with `void 0`
This removes rvals that are equivalent to undefined wherever possible
Returns an arbitrary generator function, or undefined if generator syntax is unsupported.
Function that returns an arbitrary arrow function, or undefined if arrow function syntax is unsupported.
remark-lint rule to warn when references to undefined definitions are found
Creates an object composed of the own and inherited enumerable string keyed properties of object that doesn't undefined.
A simple javascript function that will return true if the value is null like (aka undefined or null)
Function that returns an arbitrary `async function`, or undefined if `async function` syntax is unsupported.
The missing existential operator for JavaScript. Returns true unless a variable is null or undefined
Check whether a value is a `Generator` or `GeneratorFunction`. The `co` way, more strict checking. Always return boolean true or false, never null or undefined.
ESlint rule for disallow redundant undefined
Copies an object without its undefined properties. 🫥
Function that returns an arbitrary async generator function, or undefined if async generator syntax is unsupported.
Remove undefined properties and empty arrays from an object