fix(chore): Minor fix

Author: jamesgeorge007

packages/serve/index.ts

@@ -31,23 +31,23 @@ interface ConfigType {
 };
 
 const npmConfig: ConfigType = {
-installCmd: 'install',
-dependency: '--save',
-devDependency: '--save-dev',
-optionalDependency: '--save-optional'
+installCmd: "install",
+dependency: "--save",
+devDependency: "--save-dev",
+optionalDependency: "--save-optional"
 };
 
 const yarnConfig: ConfigType = {
-installCmd: 'add',
-dependency: ' ',
-devDependency: '--save',
-optionalDependency: '--optinal'
+installCmd: "add",
+dependency: " ",
+devDependency: "--save",
+optionalDependency: "--optional"
 };
 
 const spawnWithArg = (pm: string, cmd: string): SpawnSyncReturns<Buffer> => {
-const pmConfig: ConfigType = pm === 'npm' ? npmConfig : yarnConfig;
-const options: string[] = [pmConfig['installCmd'], "webpack-dev-server", pmConfig[cmd]];
-spawn.sync(pm, options);
+const pmConfig: ConfigType = pm === "npm" ? npmConfig : yarnConfig;
+const options: string[] = [pmConfig.installCmd, "webpack-dev-server", pmConfig[cmd]];
+return spawn.sync(pm, options, {stdio: "inherit"});
 };
 
 /**