fix condition RecieveService

packages/slack/src/utils/slash-command-parser.ts

@@ -3,7 +3,9 @@ import { InvalidGrowiCommandError } from '../models/errors';
 
 export const parse = (slashCommand:{[key:string]:string}): GrowiCommand => {
   const splitted = slashCommand.text.split(' ');
-  if (splitted.length < 1) {
+  console.log('slash-command', splitted);
+
+  if (splitted[0] === '') {
     throw new InvalidGrowiCommandError('The SlashCommand.text does not specify GrowiCommand type');
   }