foo = function () {}
bar = function baz () {}
fooBar = x => x
ಠ_ಠ = () => {}
Ƞȡ_҇ = (ಠ, Ƞ = 2) => {}

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[
	["function-variable", "foo"], ["operator", "="], ["keyword", "function"],
	["punctuation", "("], ["punctuation", ")"], ["punctuation", "{"], ["punctuation", "}"],
	["function-variable", "bar"], ["operator", "="], ["keyword", "function"], ["function", "baz"],
	["punctuation", "("], ["punctuation", ")"], ["punctuation", "{"], ["punctuation", "}"],
	["function-variable", "fooBar"], ["operator", "="], " x ", ["operator", "=>"], " x\r\n",
	["function-variable", "ಠ_ಠ"], ["operator", "="], ["punctuation", "("], ["punctuation", ")"],
	["operator", "=>"], ["punctuation", "{"], ["punctuation", "}"],
	["function-variable", "Ƞȡ_҇"], ["operator", "="],
	["punctuation", "("], "ಠ", ["punctuation", ","], " Ƞ ", ["operator", "="], ["number", "2"], ["punctuation", ")"],
	["operator", "=>"], ["punctuation", "{"], ["punctuation", "}"]
]

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Checks for variables obviously containing functions.