feat: error handling (#3)

### Explanation

_No response_

### Issue

_No response_

### Attestations

- [x] I have read and agree to the [Code of Conduct](https://docs.nhcarrigan.com/community/coc/)
- [x] I have read and agree to the [Community Guidelines](https://docs.nhcarrigan.com/community/guide/).
- [x] My contribution complies with the [Contributor Covenant](https://docs.nhcarrigan.com/dev/covenant/).

### Dependencies

- [ ] I have pinned the dependencies to a specific patch version.

### Style

- [x] I have run the linter and resolved any errors.
- [x] My pull request uses an appropriate title, matching the conventional commit standards.
- [x] My scope of feat/fix/chore/etc. correctly matches the nature of changes in my pull request.

### Tests

- [ ] My contribution adds new code, and I have added tests to cover it.
- [ ] My contribution modifies existing code, and I have updated the tests to reflect these changes.
- [ ] All new and existing tests pass locally with my changes.
- [ ] Code coverage remains at or above the configured threshold.

### Documentation

_No response_

### Versioning

_No response_

Reviewed-on: #3
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

src/index.ts

@@ -28,6 +28,22 @@ const commands: Record<
   "summarise": summarise,
 };
 
+process.on("unhandledRejection", (error) => {
+  if (error instanceof Error) {
+    void logger.error("Unhandled Rejection", error);
+    return;
+  }
+  void logger.error("unhandled rejection", new Error(String(error)));
+});
+
+process.on("uncaughtException", (error) => {
+  if (error instanceof Error) {
+    void logger.error("Uncaught Exception", error);
+    return;
+  }
+  void logger.error("uncaught exception", new Error(String(error)));
+});
+
 const client = new Client({
   intents: [],
 });

src/modules/about.ts

@@ -13,56 +13,66 @@ import {
   MessageFlags,
   type ChatInputCommandInteraction,
 } from "discord.js";
+import { logger } from "../utils/logger.js";
+import { replyToError } from "../utils/replyToError.js";
 
 /**
  * Responds with information about the bot.
  * @param interaction -- The interaction payload from Discord.
  */
+// eslint-disable-next-line max-lines-per-function -- Refactor at a later time.
 export const about = async(
   interaction: ChatInputCommandInteraction,
 ): Promise<void> => {
-  await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
+  try {
+    await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
 
-  const version = process.env.npm_package_version ?? "Unknown";
-  const commit = execSync("git rev-parse --short HEAD").toString().
-    trim();
+    const version = process.env.npm_package_version ?? "Unknown";
+    const commit = execSync("git rev-parse --short HEAD").toString().
+      trim();
 
-  const embed = new EmbedBuilder();
-  embed.setTitle("About Cordelia Taryne");
-  embed.setDescription(
+    const embed = new EmbedBuilder();
+    embed.setTitle("About Cordelia Taryne");
+    embed.setDescription(
     // eslint-disable-next-line stylistic/max-len -- It's a long string.
-    "Cordelia Taryne is a Discord bot that uses Anthropic to provide assistive features. She is developed by NHCarrigan. To use the bot, type `/` and select one of her commands!",
-  );
-  embed.addFields(
-    {
-      name:  "Running Version",
-      value: version,
-    },
-    {
-      name:  "Current Commit",
-      value: commit,
-    },
-  );
+      "Cordelia Taryne is a Discord bot that uses Anthropic to provide assistive features. She is developed by NHCarrigan. To use the bot, type `/` and select one of her commands!",
+    );
+    embed.addFields(
+      {
+        name:  "Running Version",
+        value: version,
+      },
+      {
+        name:  "Current Commit",
+        value: commit,
+      },
+    );
 
-  const supportButton = new ButtonBuilder().
-    setLabel("Need help?").
-    setStyle(ButtonStyle.Link).
-    setURL("https://chat.nhcarrigan.com");
-  const sourceButton = new ButtonBuilder().
-    setLabel("Source Code").
-    setStyle(ButtonStyle.Link).
-    setURL("https://git.nhcarrigan.com/nhcarrigan/aria-iuvo");
-  const subscribeButton = new ButtonBuilder().
-    setStyle(ButtonStyle.Premium).
-    setSKUId("1338672773261951026");
-  const row = new ActionRowBuilder<ButtonBuilder>().addComponents(
-    supportButton,
-    sourceButton,
-    subscribeButton,
-  );
+    const supportButton = new ButtonBuilder().
+      setLabel("Need help?").
+      setStyle(ButtonStyle.Link).
+      setURL("https://chat.nhcarrigan.com");
+    const sourceButton = new ButtonBuilder().
+      setLabel("Source Code").
+      setStyle(ButtonStyle.Link).
+      setURL("https://git.nhcarrigan.com/nhcarrigan/aria-iuvo");
+    const subscribeButton = new ButtonBuilder().
+      setStyle(ButtonStyle.Premium).
+      setSKUId("1338672773261951026");
+    const row = new ActionRowBuilder<ButtonBuilder>().addComponents(
+      supportButton,
+      sourceButton,
+      subscribeButton,
+    );
 
-  await interaction.editReply({
-    components: [ row ],
-    embeds:     [ embed ],
-  });
+    await interaction.editReply({
+      components: [ row ],
+      embeds:     [ embed ],
+    });
+  } catch (error) {
+    await replyToError(interaction);
+    if (error instanceof Error) {
+      await logger.error("about command", error);
+    }
+  }
 };

src/modules/alt.ts

@@ -8,6 +8,8 @@ import { personality } from "../config/personality.js";
 import { ai } from "../utils/ai.js";
 import { calculateCost } from "../utils/calculateCost.js";
 import { isSubscribed } from "../utils/isSubscribed.js";
+import { logger } from "../utils/logger.js";
+import { replyToError } from "../utils/replyToError.js";
 import type { ImageBlockParam } from "@anthropic-ai/sdk/resources/index.js";
 
 const isValidContentType = (
@@ -31,86 +33,93 @@ const isValidContentType = (
 export const alt = async(
   interaction: ChatInputCommandInteraction,
 ): Promise<void> => {
-  await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
-  const sub = await isSubscribed(interaction);
-  if (!sub) {
-    return;
-  }
+  try {
+    await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
+    const sub = await isSubscribed(interaction);
+    if (!sub) {
+      return;
+    }
 
-  const image = interaction.options.getAttachment("image", true);
-  const { contentType, height, width, size, url } = image;
+    const image = interaction.options.getAttachment("image", true);
+    const { contentType, height, width, size, url } = image;
 
-  // Claude supports JPG, PNG, GIF, WEBP
-  if (
-    contentType === null
+    // Claude supports JPG, PNG, GIF, WEBP
+    if (
+      contentType === null
     || !isValidContentType(contentType)
     || height === null
     || width === null
-  ) {
-    await interaction.editReply({
-      content: "That does not appear to be a valid image.",
-    });
-    return;
-  }
+    ) {
+      await interaction.editReply({
+        content: "That does not appear to be a valid image.",
+      });
+      return;
+    }
 
-  // Max file size is 5MB
-  if (size > 5 * 1024 * 1024) {
-    await interaction.editReply({
-      content:
+    // Max file size is 5MB
+    if (size > 5 * 1024 * 1024) {
+      await interaction.editReply({
+        content:
         // eslint-disable-next-line stylistic/max-len -- It's a long string.
         "That image is too large. Please provide an image that is less than 5MB.",
-    });
-    return;
-  }
+      });
+      return;
+    }
 
-  // Max dimensions are 8000px
-  if (height > 8000 || width > 8000) {
-    await interaction.editReply({
-      content:
+    // Max dimensions are 8000px
+    if (height > 8000 || width > 8000) {
+      await interaction.editReply({
+        content:
         // eslint-disable-next-line stylistic/max-len -- It's a long string.
         "That image is too large. Please provide an image that is less than 8000 pixels high or wide.",
-    });
-    return;
-  }
+      });
+      return;
+    }
 
-  const downloadRequest = await fetch(url);
+    const downloadRequest = await fetch(url);
 
-  const blob = await downloadRequest.arrayBuffer();
-  const base64 = Buffer.from(blob).toString("base64");
+    const blob = await downloadRequest.arrayBuffer();
+    const base64 = Buffer.from(blob).toString("base64");
 
-  const messages = await ai.messages.create({
+    const messages = await ai.messages.create({
     // eslint-disable-next-line @typescript-eslint/naming-convention -- Required key format for SDK.
-    max_tokens: 2000,
-    messages:   [
-      {
-        content: [
-          {
-            source: {
-              data:       base64,
-              // eslint-disable-next-line @typescript-eslint/naming-convention -- Required property syntax for SDK.
-              media_type: contentType,
-              type:       "base64",
+      max_tokens: 2000,
+      messages:   [
+        {
+          content: [
+            {
+              source: {
+                data:       base64,
+                // eslint-disable-next-line @typescript-eslint/naming-convention -- Required property syntax for SDK.
+                media_type: contentType,
+                type:       "base64",
+              },
+              type: "image",
             },
-            type: "image",
-          },
-        ],
-        role: "user",
-      },
-    ],
-    model:       "claude-3-5-sonnet-latest",
-    system:      `${personality} Your role in this conversation is to generate descriptive and accessible alt-text for the user's image. Be as descriptive as possible. Do not include ANYTHING in your response EXCEPT the actual alt-text. Wrap the text in a multi-line code block for easy copying.`,
-    temperature: 1,
-  });
+          ],
+          role: "user",
+        },
+      ],
+      model:       "claude-3-5-sonnet-latest",
+      system:      `${personality} Your role in this conversation is to generate descriptive and accessible alt-text for the user's image. Be as descriptive as possible. Do not include ANYTHING in your response EXCEPT the actual alt-text. Wrap the text in a multi-line code block for easy copying.`,
+      temperature: 1,
+    });
 
-  const response = messages.content.find((message) => {
-    return message.type === "text";
-  });
+    const response = messages.content.find((message) => {
+      return message.type === "text";
+    });
 
-  await interaction.editReply(
-    response?.text
+    await interaction.editReply(
+      response?.text
       ?? "I'm sorry, I don't have an answer for that. Please try again later.",
-  );
+    );
 
-  const { usage } = messages;
-  await calculateCost(usage, interaction.user.username, "alt-text");
+    const { usage } = messages;
+    await calculateCost(usage, interaction.user.username, "alt-text");
+  } catch (error) {
+    await replyToError(interaction);
+    if (error instanceof Error) {
+      await logger.error("alt-text command", error);
+    }
+  }
 };

src/modules/evaluate.ts

@@ -8,6 +8,8 @@ import { personality } from "../config/personality.js";
 import { ai } from "../utils/ai.js";
 import { calculateCost } from "../utils/calculateCost.js";
 import { isSubscribed } from "../utils/isSubscribed.js";
+import { logger } from "../utils/logger.js";
+import { replyToError } from "../utils/replyToError.js";
 
 /**
  * Accepts an arbitrary code snippet from the user, then sends
@@ -17,31 +19,38 @@ import { isSubscribed } from "../utils/isSubscribed.js";
 export const evaluate = async(
   interaction: ChatInputCommandInteraction,
 ): Promise<void> => {
-  await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
-  const sub = await isSubscribed(interaction);
-  if (!sub) {
-    return;
-  }
+  try {
+    await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
+    const sub = await isSubscribed(interaction);
+    if (!sub) {
+      return;
+    }
 
-  const code = interaction.options.getString("code", true);
-  const messages = await ai.messages.create({
+    const code = interaction.options.getString("code", true);
+    const messages = await ai.messages.create({
     // eslint-disable-next-line @typescript-eslint/naming-convention -- Required key format for SDK.
-    max_tokens:  2000,
-    messages:    [ { content: code, role: "user" } ],
-    model:       "claude-3-5-sonnet-latest",
-    system:      `${personality} Your role in this conversation is to evaluate the user's code and provide the result. Wrap ONLY THE CODE RESULT in a multi-line code block for easy copying.`,
-    temperature: 1,
-  });
+      max_tokens:  2000,
+      messages:    [ { content: code, role: "user" } ],
+      model:       "claude-3-5-sonnet-latest",
+      system:      `${personality} Your role in this conversation is to evaluate the user's code and provide the result. Wrap ONLY THE CODE RESULT in a multi-line code block for easy copying.`,
+      temperature: 1,
+    });
 
-  const response = messages.content.find((message) => {
-    return message.type === "text";
-  });
+    const response = messages.content.find((message) => {
+      return message.type === "text";
+    });
 
-  await interaction.editReply(
-    response?.text
+    await interaction.editReply(
+      response?.text
       ?? "I'm sorry, I don't have an answer for that. Please try again later.",
-  );
+    );
 
-  const { usage } = messages;
-  await calculateCost(usage, interaction.user.username, "evaluate");
+    const { usage } = messages;
+    await calculateCost(usage, interaction.user.username, "evaluate");
+  } catch (error) {
+    await replyToError(interaction);
+    if (error instanceof Error) {
+      await logger.error("evaluate command", error);
+    }
+  }
 };

src/modules/mood.ts

@@ -8,6 +8,8 @@ import { personality } from "../config/personality.js";
 import { ai } from "../utils/ai.js";
 import { calculateCost } from "../utils/calculateCost.js";
 import { isSubscribed } from "../utils/isSubscribed.js";
+import { logger } from "../utils/logger.js";
+import { replyToError } from "../utils/replyToError.js";
 
 /**
  * Accepts a text snippet from the user. Submits it to Anthropic
@@ -17,32 +19,39 @@ import { isSubscribed } from "../utils/isSubscribed.js";
 export const mood = async(
   interaction: ChatInputCommandInteraction,
 ): Promise<void> => {
-  await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
-  const sub = await isSubscribed(interaction);
-  if (!sub) {
-    return;
-  }
+  try {
+    await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
+    const sub = await isSubscribed(interaction);
+    if (!sub) {
+      return;
+    }
 
-  const prompt = interaction.options.getString("text", true);
+    const prompt = interaction.options.getString("text", true);
 
-  const messages = await ai.messages.create({
+    const messages = await ai.messages.create({
     // eslint-disable-next-line @typescript-eslint/naming-convention -- Required key format for SDK.
-    max_tokens:  2000,
-    messages:    [ { content: prompt, role: "user" } ],
-    model:       "claude-3-5-sonnet-latest",
-    system:      `${personality} Your role in this conversation is to analyse the text the user provides for the overall sentiment and mood of the author.`,
-    temperature: 1,
-  });
+      max_tokens:  2000,
+      messages:    [ { content: prompt, role: "user" } ],
+      model:       "claude-3-5-sonnet-latest",
+      system:      `${personality} Your role in this conversation is to analyse the text the user provides for the overall sentiment and mood of the author.`,
+      temperature: 1,
+    });
 
-  const response = messages.content.find((message) => {
-    return message.type === "text";
-  });
+    const response = messages.content.find((message) => {
+      return message.type === "text";
+    });
 
-  await interaction.editReply(
-    response?.text
+    await interaction.editReply(
+      response?.text
       ?? "I'm sorry, I don't have an answer for that. Please try again later.",
-  );
+    );
 
-  const { usage } = messages;
-  await calculateCost(usage, interaction.user.username, "mood");
+    const { usage } = messages;
+    await calculateCost(usage, interaction.user.username, "mood");
+  } catch (error) {
+    await replyToError(interaction);
+    if (error instanceof Error) {
+      await logger.error("mood command", error);
+    }
+  }
 };

src/modules/proofread.ts

@@ -8,6 +8,8 @@ import { personality } from "../config/personality.js";
 import { ai } from "../utils/ai.js";
 import { calculateCost } from "../utils/calculateCost.js";
 import { isSubscribed } from "../utils/isSubscribed.js";
+import { logger } from "../utils/logger.js";
+import { replyToError } from "../utils/replyToError.js";
 
 /**
  * Accepts a text snippet from the user. Submits it to Anthropic
@@ -17,32 +19,39 @@ import { isSubscribed } from "../utils/isSubscribed.js";
 export const proofread = async(
   interaction: ChatInputCommandInteraction,
 ): Promise<void> => {
-  await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
-  const sub = await isSubscribed(interaction);
-  if (!sub) {
-    return;
-  }
+  try {
+    await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
+    const sub = await isSubscribed(interaction);
+    if (!sub) {
+      return;
+    }
 
-  const prompt = interaction.options.getString("text", true);
+    const prompt = interaction.options.getString("text", true);
 
-  const messages = await ai.messages.create({
+    const messages = await ai.messages.create({
     // eslint-disable-next-line @typescript-eslint/naming-convention -- Required key format for SDK.
-    max_tokens:  2000,
-    messages:    [ { content: prompt, role: "user" } ],
-    model:       "claude-3-5-sonnet-latest",
-    system:      `${personality} Your role in this conversation is to proofread the text the user has provided. You should identify spelling and grammatical errors using British English.`,
-    temperature: 1,
-  });
+      max_tokens:  2000,
+      messages:    [ { content: prompt, role: "user" } ],
+      model:       "claude-3-5-sonnet-latest",
+      system:      `${personality} Your role in this conversation is to proofread the text the user has provided. You should identify spelling and grammatical errors using British English.`,
+      temperature: 1,
+    });
 
-  const response = messages.content.find((message) => {
-    return message.type === "text";
-  });
+    const response = messages.content.find((message) => {
+      return message.type === "text";
+    });
 
-  await interaction.editReply(
-    response?.text
+    await interaction.editReply(
+      response?.text
       ?? "I'm sorry, I don't have an answer for that. Please try again later.",
-  );
+    );
 
-  const { usage } = messages;
-  await calculateCost(usage, interaction.user.username, "proofread");
+    const { usage } = messages;
+    await calculateCost(usage, interaction.user.username, "proofread");
+  } catch (error) {
+    await replyToError(interaction);
+    if (error instanceof Error) {
+      await logger.error("proofread command", error);
+    }
+  }
 };

src/modules/query.ts

@@ -8,6 +8,8 @@ import { personality } from "../config/personality.js";
 import { ai } from "../utils/ai.js";
 import { calculateCost } from "../utils/calculateCost.js";
 import { isSubscribed } from "../utils/isSubscribed.js";
+import { logger } from "../utils/logger.js";
+import { replyToError } from "../utils/replyToError.js";
 
 /**
  * Accepts an arbitrary question from the user, then sends it to Anthropic
@@ -17,32 +19,39 @@ import { isSubscribed } from "../utils/isSubscribed.js";
 export const query = async(
   interaction: ChatInputCommandInteraction,
 ): Promise<void> => {
-  await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
-  const sub = await isSubscribed(interaction);
-  if (!sub) {
-    return;
-  }
+  try {
+    await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
+    const sub = await isSubscribed(interaction);
+    if (!sub) {
+      return;
+    }
 
-  const prompt = interaction.options.getString("prompt", true);
+    const prompt = interaction.options.getString("prompt", true);
 
-  const messages = await ai.messages.create({
+    const messages = await ai.messages.create({
     // eslint-disable-next-line @typescript-eslint/naming-convention -- Required key format for SDK.
-    max_tokens:  2000,
-    messages:    [ { content: prompt, role: "user" } ],
-    model:       "claude-3-5-sonnet-latest",
-    system:      `${personality} Your role in this conversation is to answer the user's question to the best of your abilities. When possible, include links to relevant sources.`,
-    temperature: 1,
-  });
+      max_tokens:  2000,
+      messages:    [ { content: prompt, role: "user" } ],
+      model:       "claude-3-5-sonnet-latest",
+      system:      `${personality} Your role in this conversation is to answer the user's question to the best of your abilities. When possible, include links to relevant sources.`,
+      temperature: 1,
+    });
 
-  const response = messages.content.find((message) => {
-    return message.type === "text";
-  });
+    const response = messages.content.find((message) => {
+      return message.type === "text";
+    });
 
-  await interaction.editReply(
-    response?.text
+    await interaction.editReply(
+      response?.text
       ?? "I'm sorry, I don't have an answer for that. Please try again later.",
-  );
+    );
 
-  const { usage } = messages;
-  await calculateCost(usage, interaction.user.username, "query");
+    const { usage } = messages;
+    await calculateCost(usage, interaction.user.username, "query");
+  } catch (error) {
+    await replyToError(interaction);
+    if (error instanceof Error) {
+      await logger.error("query command", error);
+    }
+  }
 };

src/modules/summarise.ts

@@ -8,6 +8,8 @@ import { personality } from "../config/personality.js";
 import { ai } from "../utils/ai.js";
 import { calculateCost } from "../utils/calculateCost.js";
 import { isSubscribed } from "../utils/isSubscribed.js";
+import { logger } from "../utils/logger.js";
+import { replyToError } from "../utils/replyToError.js";
 
 /**
  * Accepts a text snippet from the user. Submits it to Anthropic
@@ -17,32 +19,39 @@ import { isSubscribed } from "../utils/isSubscribed.js";
 export const summarise = async(
   interaction: ChatInputCommandInteraction,
 ): Promise<void> => {
-  await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
-  const sub = await isSubscribed(interaction);
-  if (!sub) {
-    return;
-  }
+  try {
+    await interaction.deferReply({ flags: [ MessageFlags.Ephemeral ] });
+    const sub = await isSubscribed(interaction);
+    if (!sub) {
+      return;
+    }
 
-  const prompt = interaction.options.getString("text", true);
+    const prompt = interaction.options.getString("text", true);
 
-  const messages = await ai.messages.create({
+    const messages = await ai.messages.create({
     // eslint-disable-next-line @typescript-eslint/naming-convention -- Required key format for SDK.
-    max_tokens:  2000,
-    messages:    [ { content: prompt, role: "user" } ],
-    model:       "claude-3-5-sonnet-latest",
-    system:      `${personality} Your role in this conversation is to summarise the text the user has provided. Your goal is to reach 250 words or less. Wrap ONLY THE SUMMARY in multi-line code block so it is easy to copy.`,
-    temperature: 1,
-  });
+      max_tokens:  2000,
+      messages:    [ { content: prompt, role: "user" } ],
+      model:       "claude-3-5-sonnet-latest",
+      system:      `${personality} Your role in this conversation is to summarise the text the user has provided. Your goal is to reach 250 words or less. Wrap ONLY THE SUMMARY in multi-line code block so it is easy to copy.`,
+      temperature: 1,
+    });
 
-  const response = messages.content.find((message) => {
-    return message.type === "text";
-  });
+    const response = messages.content.find((message) => {
+      return message.type === "text";
+    });
 
-  await interaction.editReply(
-    response?.text
+    await interaction.editReply(
+      response?.text
       ?? "I'm sorry, I don't have an answer for that. Please try again later.",
-  );
+    );
 
-  const { usage } = messages;
-  await calculateCost(usage, interaction.user.username, "summarise");
+    const { usage } = messages;
+    await calculateCost(usage, interaction.user.username, "summarise");
+  } catch (error) {
+    await replyToError(interaction);
+    if (error instanceof Error) {
+      await logger.error("summarise command", error);
+    }
+  }
 };

src/utils/replyToError.ts

@@ -0,0 +1,38 @@
+/**
+ * @copyright nhcarrigan
+ * @license Naomi's Public License
+ * @author Naomi Carrigan
+ */
+import {
+  ActionRowBuilder,
+  ButtonBuilder,
+  ButtonStyle,
+  type ChatInputCommandInteraction,
+  type MessageContextMenuCommandInteraction,
+} from "discord.js";
+
+/**
+ * Responds to an interaction with a generic error message.
+ * @param interaction -- The interaction payload from Discord.
+ */
+export const replyToError = async(
+  interaction:
+    | ChatInputCommandInteraction
+    | MessageContextMenuCommandInteraction,
+): Promise<void> => {
+  const button = new ButtonBuilder().setLabel("Need help?").
+    setStyle(ButtonStyle.Link).
+    setURL("https://chat.nhcarrigan.com");
+  const row = new ActionRowBuilder<ButtonBuilder>().addComponents(button);
+  if (interaction.deferred || interaction.replied) {
+    await interaction.editReply({
+      components: [ row ],
+      content:    "An error occurred while running this command.",
+    });
+    return;
+  }
+  await interaction.reply({
+    components: [ row ],
+    content:    "An error occurred while running this command.",
+  });
+};