问为什么在reactjs中我的抽搐脚趾的极小值还没有定义？

EN

const defaultScore = {
    0: 0, 1: 0, 2: 0,
    3: 0, 4: 0, 5: 0,
    6: 0, 7: 0, 8: 0,
}
const winArray = [[0, 1, 2], [3, 4, 5], [6, 7, 8], [0, 3, 6], [1, 4, 7], [2, 5, 8], [0, 4, 8], [2, 6, 4]]
const compareWin = (a, b, c) => {
    return (c !== 0 && b === c && a === b)
}
const tryWin = (board: Object) => {//check if the game is in an end state
    let win = null
    winArray.forEach(v => {
        if (compareWin(board[v[0]], board[v[1]], board[v[2]])) {
            win = board[v[0]]
        } else if (!Object.values(board).includes(0)) {
            win = 'draw'
        }
    })
    return win
}
const AI = 'O'
const human = 'X'

const copyBoard = (original: Object, index?: any, newValue?: String) => {//
    const copiedBoard = { ...original }
    index = Number(index) // so it isn't a string
    if (index != null && newValue != null) {
        copiedBoard[index] = newValue
    }
    return copiedBoard
}   

const miniMax = (board: Object, depth: number, isMax: Boolean) => {
    if (tryWin(board) != null) {
        const scoreOutcome = {
            [AI]: 10,
            [human]: -10,
            'draw': 0
        }
        return scoreOutcome[tryWin(board)]
    }


    const outcome = (isMax) ? -10000 : +10000

    if (isMax) {
        Object.keys(board).forEach(v => {

            if (board[v] === 0) {

                const simBoard = copyBoard(board, v, AI)
                const newOutcome = miniMax(simBoard, depth + 1, !isMax)

                return (typeof (newOutcome) == 'undefined') ? outcome : Math.max(outcome, newOutcome) //it was returning undefined sometimes so to ensure it will always return an integer to confirm that wasn't the problem 
            }
        })
    } else {
        Object.keys(board).forEach(v => {
            if (board[v] === 0) {

                const simBoard = copyBoard(board, v, human)
                const newOutcome = miniMax(simBoard, depth + 1, !isMax)

                return (typeof (newOutcome) == 'undefined') ? outcome : Math.min(outcome, newOutcome) //this does not return undefined

            }
        })
    }
}
const AImove = () => {
    let move
    let bestOutcome = -10000
    Object.keys(boardState).forEach(v => {
        if (boardState[v] === 0) {
            const simBoard = copyBoard(boardState, v, AI)
            const outcome = miniMax(simBoard, 0, true)
            console.log('outcome', outcome) //this returns undefined 
            if (outcome >= bestOutcome) {
                bestOutcome = outcome
                move = v
            }
        }
    })
    return move
}
const smartMoves = () => {
    const finalPlay = AImove()
    console.log('ai', finalPlay)

}