now-alias: fix edge case with older aliases or removed deployments

bin/now-alias

@@ -128,9 +128,19 @@ async function run (token) {
       const text = sorted.map(([target, _aliases]) => {
         return table(_aliases.map((_alias) => {
           const _url = chalk.underline(`https://${_alias.alias}`);
-          const _sourceUrl = chalk.underline(`https://${urls.get(target)}`);
+          const _sourceUrl = urls.get(target)
+            ? chalk.underline(`https://${urls.get(target)}`)
+            : chalk.gray('<null>');
+
           const time = chalk.gray(ms(current - new Date(_alias.created)) + ' ago');
-          return [_alias.uid, _sourceUrl, _url, time];
+          return [
+            // we default to `''` because some early aliases didn't
+            // have an uid associated
+            null == _alias.uid ? '' : _alias.uid,
+            _sourceUrl,
+            _url,
+            time
+          ];
         }), { align: ['l', 'r', 'l'], hsep: ' '.repeat(3) });
       }).join('\n\n');