Interim JavaScript Traffic Node

[
    {
        "id": "cdc39aa85d9e2b26",
        "type": "function",
        "z": "bf14112.91a86f",
        "name": "Traffic",
        "func": "// Replacement Traffic node as original was nuked in NR13\n\nconst allow = \"ALLOW\"\nconst block = \"BLOCK\"\n\n// create unique storage for each instance using the function node's own ID\nvar uid = \"traffic_\" + node.id + \"_state\"\n\n// retrieve traffic light state from storage\nvar sto = flow.get(uid)\n\n// green: pass message through\nif (sto == allow) {\n    node.status({fill:\"green\",shape:\"dot\",text:allow});\n    return msg\n}\n\n// red: do no such thing\nif (sto == block) {\n    node.status({fill:\"red\",shape:\"dot\",text:block});\n}\n\n// parse control messages\nif (msg.hasOwnProperty(\"control\")) {\n    if (msg.control.toUpperCase() == allow) {\n        node.status({fill:\"green\",shape:\"dot\",text:allow});     \n        flow.set(uid,allow);\n    }\n    if (msg.control.toUpperCase() == block) {\n        node.status({fill:\"red\",shape:\"dot\",text:block});     \n        flow.set(uid,block);\n    }\n}\n",
        "outputs": 1,
        "noerr": 0,
        "initialize": "// Code added here will be run once\n// whenever the node is started.\n\nconst init_state = \"BLOCK\"\nvar uid = \"traffic_\" + node.id + \"_state\"\nflow.set(uid,init_state)\nnode.status({fill:\"red\",shape:\"dot\",text:init_state});\n",
        "finalize": "",
        "libs": [],
        "x": 330,
        "y": 3580,
        "wires": [
            [
                "e229ced0d3aaa895"
            ]
        ]
    },
    {
        "id": "3ca8bd52927e845f",
        "type": "inject",
        "z": "bf14112.91a86f",
        "name": "Payload",
        "props": [
            {
                "p": "payload"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payloadType": "date",
        "x": 160,
        "y": 3580,
        "wires": [
            [
                "cdc39aa85d9e2b26"
            ]
        ]
    },
    {
        "id": "fc2a233ae81b0a7a",
        "type": "inject",
        "z": "bf14112.91a86f",
        "name": "Allow",
        "props": [
            {
                "p": "control",
                "v": "Allow",
                "vt": "str"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "x": 150,
        "y": 3680,
        "wires": [
            [
                "cdc39aa85d9e2b26"
            ]
        ]
    },
    {
        "id": "f21ba4c1fb2f9247",
        "type": "inject",
        "z": "bf14112.91a86f",
        "name": "Block",
        "props": [
            {
                "p": "control",
                "v": "block",
                "vt": "str"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "x": 150,
        "y": 3640,
        "wires": [
            [
                "cdc39aa85d9e2b26"
            ]
        ]
    },
    {
        "id": "e229ced0d3aaa895",
        "type": "debug",
        "z": "bf14112.91a86f",
        "name": "OUT",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
        "x": 470,
        "y": 3580,
        "wires": []
    },
    {
        "id": "5a888fa72fcdbf18",
        "type": "comment",
        "z": "bf14112.91a86f",
        "name": "Replacement for Traffic node",
        "info": "",
        "x": 120,
        "y": 3540,
        "wires": []
    }
]