First iteration!

src/lib/constants.ts

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+import { join } from 'path';
+
+export const rootDir = join(__dirname, '..', '..');
+export const srcDir = join(rootDir, 'src');

src/lib/setup.ts

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+// Unless explicitly defined, set NODE_ENV as development:
+process.env.NODE_ENV ??= 'development';
+
+import { ApplicationCommandRegistries, RegisterBehavior } from '@sapphire/framework';
+import '@sapphire/plugin-logger/register';
+import { setup } from '@skyra/env-utilities';
+import * as colorette from 'colorette';
+import { join } from 'node:path';
+import { srcDir } from './constants';
+
+// Set default behavior to bulk overwrite
+ApplicationCommandRegistries.setDefaultBehaviorWhenNotIdentical(RegisterBehavior.BulkOverwrite);
+
+// Read env var
+setup({ path: join(srcDir, '.env') });
+
+// Enable colorette
+colorette.createColors({ useColor: true });

src/lib/utils.ts

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+import {
+	container,
+	type ChatInputCommandSuccessPayload,
+	type Command,
+	type ContextMenuCommandSuccessPayload,
+	type MessageCommandSuccessPayload
+} from '@sapphire/framework';
+import { cyan } from 'colorette';
+import type { APIUser, Guild, User } from 'discord.js';
+
+export function logSuccessCommand(payload: ContextMenuCommandSuccessPayload | ChatInputCommandSuccessPayload | MessageCommandSuccessPayload): void {
+	let successLoggerData: ReturnType<typeof getSuccessLoggerData>;
+
+	if ('interaction' in payload) {
+		successLoggerData = getSuccessLoggerData(payload.interaction.guild, payload.interaction.user, payload.command);
+	} else {
+		successLoggerData = getSuccessLoggerData(payload.message.guild, payload.message.author, payload.command);
+	}
+
+	container.logger.debug(`${successLoggerData.shard} - ${successLoggerData.commandName} ${successLoggerData.author} ${successLoggerData.sentAt}`);
+}
+
+export function getSuccessLoggerData(guild: Guild | null, user: User, command: Command) {
+	const shard = getShardInfo(guild?.shardId ?? 0);
+	const commandName = getCommandInfo(command);
+	const author = getAuthorInfo(user);
+	const sentAt = getGuildInfo(guild);
+
+	return { shard, commandName, author, sentAt };
+}
+
+function getShardInfo(id: number) {
+	return `[${cyan(id.toString())}]`;
+}
+
+function getCommandInfo(command: Command) {
+	return cyan(command.name);
+}
+
+function getAuthorInfo(author: User | APIUser) {
+	return `${author.username}[${cyan(author.id)}]`;
+}
+
+function getGuildInfo(guild: Guild | null) {
+	if (guild === null) return 'Direct Messages';
+	return `${guild.name}[${cyan(guild.id)}]`;
+}