Proposal state machine for sp-list-formatter

createStateMachine.ts

function createStateMachine<States extends string, TagIds extends string>(
    events: {
        for: [States, TagIds, FormatterOptions][],
        transitions: Array<{
            from: States,
            to: States,
            when: {
                operator: Operators,
                operands: Operands
            }
        }>
    }
) {
    //Don't know how to implement that with ListFormatterBuilder yet.
    for (const [state, tagId, config] of events.for) {
        // ... ???
    }
}

const t = createStateMachine<"A" | "D", "div1">({
    for: [
        ["A", "div1", {}],
        ["D", "div1", {}]
    ],
    transitions: [{
        from: "A",
        to: "D",
        when: {
            operator: "==",
            operands: ["@currentField", "x"]
        }
    }]
})