There are several scripts, which one is the best to use ?
The one with slider works, but not sure how to use it as it displays only half of a squircle ?
For the others I get :

ReferenceError: Can't find variable: LiteGraph

squircle_t2.js line 150

146: factory.cancel();
147: this.setOutputData(0, output);
148: }
149:
150: >> LiteGraph.registerNodeType("Curves2/squircle_t2", squircle_t2);
151:
152: })();