This codemod replaces viewportTopLeft with viewportUV
Example
Before
tsimport { toneMapping, color, viewportTopLeft } from "three/nodes";
After
tsimport { toneMapping, color, viewportUV } from "three/nodes";
Before
tsscene.backgroundNode = viewportTopLeft.y.mix(color(0x66bbff), color(0x4466ff));
After
tsscene.backgroundNode = viewportUV.y.mix(color(0x66bbff), color(0x4466ff));