RegExp:
/(.([a-zA-Z]+\(["'][a-zA-Z-]+["']\))){2,}/g
Test values:
Obj.prop.methodX("val").methodY("val");
this.get("someClass").addClass("full");
Obj.prop.addClass('some-class').removeClass('hidden');
Obj.prop.addClass('some-class');
Result: Should find all like
.methodX("val").methodY("val")