@turf/along throws an "Coord is required" error

@turf/along throws this https://github.com/Turfjs/turf/blob/master/packages/turf-invariant/index.ts#L18 error.

My usage:

const currentPoint = along(animData.line, stepValue, { units: 'kilometers' })

Error/stacktrace:

My debugging. Note that coords[i - 1] is undefined.

function along(line, distance, options) {
    if (options === void 0) { options = {}; }
    // Get Coords
    var geom = invariant_1.getGeom(line);
    var coords = geom.coordinates;
    var travelled = 0;
    for (var i = 0; i < coords.length; i++) {
        if (distance >= travelled && i === coords.length - 1) {
            break;
        }
        else if (travelled >= distance) {
            var overshot = distance - travelled;
            if (!overshot) {
                return helpers_1.point(coords[i]);
            }
            else {
                // error happens here. 
                // "coords[i - 1]" is undefined
                // "bearing" function throws an error because "coords[i - 1]" is undefined
                var direction = bearing_1.default(coords[i], coords[i - 1]) - 180;
                var interpolated = destination_1.default(coords[i], overshot, direction, options);
                return interpolated;
            }
        }
        else {
            travelled += distance_1.default(coords[i], coords[i + 1], options);
        }
    }
    return helpers_1.point(coords[coords.length - 1]);
}

Unfortunately I don't have GeoJSON data file. The issue is intermittent and only happens for some arcane GPS stream values. I pinpointed issue to coords[i - 1] being undefined, but I don't know why it could be undefined because I don't understand the algorithm along function uses.

Start with the @turf/along implementation and the turf-invariant index.ts and bearing calls shown in the report. The missing GeoJSON prevents direct reproduction, so first obtain a minimal failing LineString and distance value, then trace where coords[i - 1] becomes undefined. Done means identifying the failing input or algorithm boundary and adding a regression test.