cli: bugfix — gracefully handling lack of "arguments" key in action object (ref. #66)

cli/lrcli.js

@@ -46,7 +46,12 @@ Options:
 
 let printPluginActionUsage = (action, action_name) => {
     
+    // initialize
     let options = ""
+    let positional = ""
+    let positional_desc = ""
+    
+    if ("arguments" in action) {
         for (const opt in action.arguments) {
             if (opt == '_') {
                 continue
@@ -59,8 +64,6 @@ let printPluginActionUsage = (action, action_name) => {
             options += `\n`
         }
     
-    let positional = ''
-    let positional_desc = ''
         if ('_' in action.arguments) {
             if ('name' in action.arguments._) {
                 positional = ` <${action.arguments._.name}...>`
@@ -72,6 +75,7 @@ let printPluginActionUsage = (action, action_name) => {
             ${positional}
                 ${action.arguments._.description}`
         }
+    }
     
     let usage = `    ${action_name}${ (options != "") ? " [options...]" : "" }${positional}
         ${action.description}${positional_desc}
@@ -215,7 +219,8 @@ if (['--help', '-h'].includes(parsed_args._[2])) {
 var parsed_plugin_args = parsePluginActionArgs(
                             // removing the plugin name and the method name
                             parsed_args._.slice(2),
-                            plugin.actions[action].arguments
+                            // empty object in case arguments key does not exist
+                            plugin.actions[action].arguments || {}
                         )
 
 //console.log(parsed_plugin_args)