Verifies whether the passed value is either an object or a function which features a then method; hence it executes a shallow check of whether the test candidate features the most basic Thenable behavior/trait.
value
then
Thenable
Optional
An optionally passed value of any type.
A boolean value which indicates whether the tested value does qualify as a Thenable by having
Verifies whether the passed
valueis either an object or a function which features athenmethod; hence it executes a shallow check of whether the test candidate features the most basicThenablebehavior/trait.