foo
fooBar42
foo-bar42-baz
yes-no
function-case
delete-by
a-b2
_-a_

----------------------------------------------------

[
	["identifier", "foo"],
	["identifier", "fooBar42"],
	["identifier", "foo-bar42-baz"],
	["identifier", "yes-no"],
	["identifier", "function-case"],
	["identifier", "delete-by"],
	["identifier", "a-b2"],
	["identifier", "_-a_"]
]

----------------------------------------------------

Checks for identifiers.