The kind of color fill layers and shape layers is the same

The kind of color fill layers and shape layers is the same. How can I distinguish between a color fill layer and a shape layer using JSX?

The following checks if the layer's kind is a shape and the path is greater than or equal to 1, which would make it a shape layer. However, there’s a flaw: if a PSD file has paths with more than 1, a color fill layer might also be incorrectly identified as a shape layer.

(function() {
    // Get the currently active document
    var doc = app.activeDocument;

    var subPathsLength = 0;
    try {
        subPathsLength = doc.pathItems[0].subPathItems.length
        // Read the number of paths
    } catch (error) {}

    // Get the currently selected layer
    var selectedLayer = doc.activeLayer;

    // Check if the selected layer is a shape layer
    if (selectedLayer.kind == LayerKind.SOLIDFILL && subPathsLength >= 1) {
        alert("The selected layer is a shape layer.");
    } else {
        alert("The selected layer is not a shape layer.");
    }

}());