Initial rough working draft of v3

src/deploy-commands.ts

@@ -0,0 +1,22 @@
+import { SlashCommandBuilder } from '@discordjs/builders';
+import { REST } from '@discordjs/rest';
+import { Routes } from 'discord-api-types/v9';
+import { config } from './config';
+import { packageJson } from './util';
+
+const helpSlashCommand = new SlashCommandBuilder()
+  .setName('help')
+  .setDescription(`How to use ${packageJson().name}`);
+
+const commands = [helpSlashCommand.toJSON()];
+
+export async function deployCommands(clientId: string) {
+  const rest = new REST({ version: '9' }).setToken(config.token);
+  if (config.devGuildId) {
+    await rest.put(Routes.applicationGuildCommands(clientId, config.devGuildId), {
+      body: commands,
+    });
+  } else {
+    await rest.put(Routes.applicationCommands(clientId), { body: commands });
+  }
+}