GET https://esm.sh/stable/solid-js@1.4.8/es2022/package.json 404 (Not Found)
GET https://esm.sh/stable/solid-js@1.4.8/X-ZS8q/es2022/package.json 404 (Not Found)
GET https://esm.sh/stable/solid-js@1.4.8/X-ZS8q/package.json 404 (Not Found)
GET https://esm.sh/stable/solid-js@1.4.8/package.json 404 (Not Found)
ReferenceError: url is not defined
at getESModuleShimsScript (api.js?1:48:47)
at async ImportMapApp.renderMap (mapapp.js?1:218:125)
Yes the generator will check for package.json files to see if they contain resolution information. The 404 is therefore important to the resolution algorithm itself.
https://generator.jspm.io/#U21nYGBkDM0rySzJSU1hyCnNTXUw0DPWM9BNzCnISNQzsgAAYTlAdCIA
But this exists: