fix: confirm that file exists to unlink

tldraw/apps/tldraw-logseq/build.mjs

@@ -19,5 +19,5 @@ fs.writeFileSync('dist/package.json', JSON.stringify(glob, null, 2))
 
 const dest = path.join(__dirname, '/../../../src/js/tldraw-logseq.js')
 
-fs.unlinkSync(dest)
+if (fs.existsSync(dest)) fs.unlinkSync(dest)
 fs.linkSync(path.join(__dirname, '/dist/index.js'), dest)