[Package Error] "[email protected]" could not be built.

[jechaviz]

/*

• [Package Error] "[email protected]" could not be built.
• [1/5] Verifying package is valid…
• [2/5] Installing dependencies from npm…
• [3/5] Building package using esinstall…
• Running esinstall...
• Failed to load node_modules/svelte/src/reactivity/set.js

• Unexpected token (42:1) in svelte/src/reactivity/set.js
  

• Install failed.
• Install failed.
• How to fix:
• • If you believe this to be an error in Skypack, file an issue here: https://github.com/skypackjs/skypack-cdn/issues
• • If you believe this to be an issue in the package, share this URL with the package authors to help them debug & fix.
• • Use https://skypack.dev/ to find a web-friendly alternative to find another package.
    */

console.warn("[Package Error] "[email protected]" could not be built. \n[1/5] Verifying package is valid…\n[2/5] Installing dependencies from npm…\n[3/5] Building package using esinstall…\nRunning esinstall...\nFailed to load node_modules/svelte/src/reactivity/set.js\n Unexpected token (42:1) in svelte/src/reactivity/set.js\nInstall failed.\nInstall failed.");
throw new Error("[Package Error] "[email protected]" could not be built. ");
export default null;

[jechaviz]

I noticed this is happening in any 5.x.x version