Makes ToolInfo aliases property optional.

Author: jglogan

Sources/ArgumentParserToolInfo/ToolInfo.swift

@@ -50,7 +50,7 @@ public struct CommandInfoV0: Codable, Hashable {
   /// Name used to invoke the command.
   public var commandName: String
   /// List of command aliases.
-  public var aliases: [String]
+  public var aliases: [String]?
   /// Short description of the command's functionality.
   public var abstract: String?
   /// Extended description of the command's functionality.
@@ -68,7 +68,7 @@ public struct CommandInfoV0: Codable, Hashable {
     superCommands: [String],
     shouldDisplay: Bool,
     commandName: String,
-    aliases: [String],
+    aliases: [String]?,
     abstract: String,
     discussion: String,
     defaultSubcommand: String?,
@@ -93,7 +93,7 @@ public struct CommandInfoV0: Codable, Hashable {
     self.superCommands = try container.decodeIfPresent(
       [String].self, forKey: .superCommands)
     self.commandName = try container.decode(String.self, forKey: .commandName)
-    self.aliases = try container.decode([String].self, forKey: .aliases)
+    self.aliases = try container.decodeIfPresent([String].self, forKey: .aliases)
     self.abstract = try container.decodeIfPresent(
       String.self, forKey: .abstract)
     self.discussion = try container.decodeIfPresent(

Tests/ArgumentParserToolInfoTests/Examples/example0.json

@@ -1,9 +1,6 @@
 {
   "serializationVersion": 0,
   "command": {
-    "commandName": "empty-example",
-    "aliases": [
-
-    ]
+    "commandName": "empty-example"
   }
 }