Karabiner Configuration https://pqrs.org/osx/karabiner/

private.xml

<?xml version="1.0"?>
<root>
    <item>
		<name>F19 to F19</name>
		<appendix>(F19 to Hyper (ctrl+shift+cmd+opt) + F19 Only, send escape)</appendix>
		<identifier>private.f192f19_escape</identifier>
		<autogen>
			--KeyOverlaidModifier--
			KeyCode::F19,
			KeyCode::COMMAND_L,
			ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L,
			KeyCode::ESCAPE
		</autogen>
	</item>
    <item>
        <name>Hyper+HJKL to arrow keys </name>
        <appendix>Hyper+HJKL to arrow keys</appendix>
        <identifier>private.hyper_hjkl_to_arrows</identifier>
        <autogen>
            __KeyToKey__
            KeyCode::H,
            ModifierFlag::COMMAND_L |  ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L,
            KeyCode::CURSOR_LEFT
        </autogen>
        <autogen>
            __KeyToKey__
            KeyCode::J,
            ModifierFlag::COMMAND_L |  ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L,
            KeyCode::CURSOR_DOWN
        </autogen>
        <autogen>
            __KeyToKey__
            KeyCode::K,
            ModifierFlag::COMMAND_L |  ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L,
            KeyCode::CURSOR_UP
        </autogen>
        <autogen>
            __KeyToKey__
            KeyCode::L,
            ModifierFlag::COMMAND_L |  ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L,
            KeyCode::CURSOR_RIGHT
        </autogen>
    </item>
</root>