improve error message when async expression fails

chee · Jun 8, 2019 · 86dcd47 · 86dcd47
1 parent 5e63354
commit 86dcd47
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/index.js b/index.js
@@ -178,4 +178,8 @@ function getTilesize({imageWidth, argv}) {
 		previousSlice = slice
 	}
 	print(EOL)
-})().catch(console.error)
+})().catch(error => {
+	let message = error ? error.toString() : "something threw nothing"
+	process.stderr.write(message + EOL)
+	process.exit(1)
+})