--[[**
		ensures value matches given interface definition strictly

		@param checkTable The interface definition

		@returns A function that will return true iff the condition is passed
	**--]]

	function t.strictInterface(checkTable)
		assert(checkInterface(checkTable))
		return function(value)
			local tableSuccess, tableErrMsg = t.table(value)
			if tableSuccess == false then
				return false, tableErrMsg or ""
			end

			for key, check in pairs(checkTable) do
				local success, errMsg = check(value[key])
				if success == false then
					return false, string.format("[interface] bad value for %s:\n\t%s", tostring(key), errMsg or "")
				end
			end

			for key in pairs(value) do
				if not checkTable[key] then
					return false, string.format("[interface] unexpected field %q", tostring(key))
				end
			end

			return true
		end
	end
end
