A karabiner rule for using the mouse left and right scroll wheel to the previous and next tab

scroll_left_right_to_tab_next_back.json

"rules": [
                    {
                        "description": "Mouse right scroll to ctrl+tab (next tab)",
                        "manipulators": [
                            {
                                "from": {
                                    "pointing_button": "button5"
                                },
                                "to": [
                                    {
                                        "key_code": "tab",
                                        "modifiers": [
                                            "left_control"
                                        ]
                                    }
                                ],
                                "type": "basic"
                            }
                        ]
                    },
                    {
                        "description": "Mouse left scroll to shift+ctrl+tab (previous tab)",
                        "manipulators": [
                            {
                                "from": {
                                    "pointing_button": "button4"
                                },
                                "to": [
                                    {
                                        "key_code": "tab",
                                        "modifiers": [
                                            "left_control",
                                            "shift"
                                        ]
                                    }
                                ],
                                "type": "basic"
                            }
                        ]
                    }
                ]

FYI if anyone stumbled into this from Google, certain mouses emit scroll left/right as button events like above, but many other mouses will emit a scroll_wheel event with delta values which this snippet unfortunately doesn't support. Still looking to see if there's a way to capture those events and a < 0 or > 0 condition but others who browsed the source code say it's not possible right now.