JSPM

Checks if `value` is `null` or `undefined`.

ExtremeJS Utilities

R.isNil exported as a module

Collection of methods for check

picker([{id:10}, {id:20}], '*.id=>[]', true) => [ 10, 20 ], ...

Ether Basic Functions

工具类

Check if the given value is of a specific type.

R.isNil exported as a module

Allows parsing of an existential check in Babel