app.beginUndoGroup("すべてのレイヤー名をエフェクト名に");
for (i = 1; i <= app.project.items.length; i++) {
    myItem = app.project.items[i];
    allLayerEffectName();
}
app.endUndoGroup();

function allLayerEffectName() {
    for (var i = 1; i <= myItem.numLayers; i++) {
        var effect = myItem.layer(i).property("ADBE Effect Parade");
        for (var j = 1; j <= effect.numProperties; j += 1) {
            $.writeln( myItem.layer(i).name);
            if (effect(j).enabled) {
                myItem.layer(i).name = effect(j).name;
                app.project.autoFixExpressions(myItem.layer(i).name, myItem.layer(i).name);
            }
        }
    }
}