TypeError of router5-transition-path

[exsesx]

Could you please check these lines of code?

router5-transition-path/dist/index.es.js

function transitionPath(toState, fromState) {
    var toStateOptions = (toState.meta && toState.meta && toState.meta.options) || {};
    var fromStateIds = fromState ? nameToIDs(fromState.name) : [];
    var toStateIds = nameToIDs(toState.name);
    var maxI = Math.min(fromStateIds.length, toStateIds.length);
    function pointOfDifference() {
        var i;
        var _loop_1 = function () {
            var left = fromStateIds[i];
            var right = toStateIds[i];
            if (left !== right)
                return { value: i };
            var leftParams = extractSegmentParams(left, toState);
            var rightParams = extractSegmentParams(right, fromState);
            if (Object.keys(leftParams).length !==
                Object.keys(rightParams).length)
                return { value: i };
            if (Object.keys(leftParams).length === 0)
                return "continue";
            var different = Object.keys(leftParams).some(function (p) { return rightParams[p] !== leftParams[p]; });
            if (different) {
                return { value: i };
            }
        };
        for (i = 0; i < maxI; i += 1) {
            var state_1 = _loop_1();
            if (typeof state_1 === "object")
                return state_1.value;
        }
        return i;
    }
    var i;
    if (!fromState || toStateOptions.reload) {
        i = 0;
    }
    else if (!hasMetaParams(fromState) && !hasMetaParams(toState)) {
        i = 0;
    }
    else {
        i = pointOfDifference();
    }
    var toDeactivate = fromStateIds.slice(i).reverse();
    var toActivate = toStateIds.slice(i);
    var intersection = fromState && i > 0 ? fromStateIds[i - 1] : '';
    return {
        intersection: intersection,
        toDeactivate: toDeactivate,
        toActivate: toActivate
    };
}

TypeError: Cannot read property 'meta' of null

[exsesx]

Error line:

var toStateOptions = (toState.meta && toState.meta && toState.meta.options) || {};

[exsesx]

router5/packages/router5-transition-path/modules/transitionPath.ts

Line 56 in fcc8f85

(toState.meta && toState.meta && toState.meta.options) || {}