Cometchat React Native Customization

What it does

When your agent uses it

• Tasks that involve Cross-platform mobile apps
• Tasks that involve Theming and dark mode
• Tasks that involve Design systems

Example prompts

• “/cometchat-react-native-customization”

Requirements

• Compatibility (from SKILL.md): React Native >=0.77; @cometchat/chat-uikit-react-native ^5.4.0

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

1. 1Reaching for CSS — no stylesheets, no className, no --cometchat-*. Theme object + RN styles.
2. 2Emitting the React plugin API — does not exist; use ChatConfigurator + DataSourceDecorator.
3. 3Omitting getId() on a decorator — the base throws; ChatConfigurator.enable() calls it → crash at registration with Method not implemented.
4. 4Not calling super in a decorator override — silently drops all built-in templates.
5. 5Setting only light when the app follows the OS — dark mode then falls back to defaults.
6. 6Guessing token or style-key names — fetch them; a wrong key fails silently rather than erroring.

What it can do on your machine

Read from SKILL.md and the folder at commit 911b108. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • npm

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use npm, which can reach the network depending on how they are called.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  React Native >=0.77; @cometchat/chat-uikit-react-native ^5.4.0

  From compatibility in the SKILL.md frontmatter.

Context cost

Cometchat React Native Customization loads about 2.5k tokens when it runs. Until then it costs about 114 tokens; SKILL.md has 774 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~114

When it runs · the whole SKILL.md, loaded when a task matches

~2.5k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from cometchat/cometchat-skills at commit 911b108, republished under its MIT licence (© cometchat). 774 words, ~2,457 tokens.

name

cometchat-react-native-customization

description

Theme, restyle and extend the CometChat React Native UI Kit v5 — theme modes and color tokens, per-component style objects, view slots, and the DataSource decorator chain for custom message types. Triggers: change CometChat colors React Native, dark mode RN chat, custom message bubble RN, brand the RN chat UI, custom message type React Native, restyle the message bubble, change the chat font, add a custom bubble RN.

compatibility

React Native >=0.77; @cometchat/chat-uikit-react-native ^5.4.0

license

MIT

metadata.author

CometChat

metadata.version

1.0.0

metadata.tags

chat cometchat react-native customization theming styling datasource decorator

// Fixed dark for the whole app.
<CometChatThemeProvider theme={{ mode: "dark" }}>{/* … */}</CometChatThemeProvider>

// Follow the OS, branded in BOTH schemes. mode:"auto" is the switch;
// set BOTH light and dark or dark falls back to defaults.
<CometChatThemeProvider
  theme={{
    mode: "auto",
    light: { color: { primary: "#F76808" } },
    dark: { color: { primary: "#F8935B" } },
  }}
>
  {/* … */}
</CometChatThemeProvider>

<CometChatConversations style={{ containerStyle: { backgroundColor: "#F7F7F7" } }} />

<CometChatThemeProvider theme={{ light: { conversationStyles: { /* … */ } } }}>

import { useTheme } from "@cometchat/chat-uikit-react-native";
import { Text } from "react-native";

const Label = () => {
  const theme = useTheme();
  return <Text style={{ color: theme.color.textPrimary }}>Chats</Text>;
};

import {
  ChatConfigurator, DataSourceDecorator, CometChatMessageTemplate,
} from "@cometchat/chat-uikit-react-native";

const ORDER_TYPE = "order";

class OrderDataSource extends DataSourceDecorator {
  // 0. IDENTITY — REQUIRED. The base DataSourceDecorator.getId() THROWS
  // ("Method not implemented.") and ChatConfigurator.enable() calls getId() to
  // dedupe the registry — so a subclass without this override crashes at
  // ChatConfigurator.enable(...), NOT at render. Return a stable, unique id.
  getId(): string {
    return "order_message_datasource";
  }

  // 1. RENDER — how the bubble draws.
  getAllMessageTemplates(theme?: any, params?: any): CometChatMessageTemplate[] {
    const templates = super.getAllMessageTemplates(theme, params);
    // append or replace a template here
    return templates;
  }

  // 2. FETCH — WITHOUT THESE TWO THE MESSAGE IS NEVER RETRIEVED.
  // CometChatMessageList builds its request from them:
  //   requestBuilder.setTypes(ChatConfigurator.dataSource.getAllMessageTypes())
  //   requestBuilder.setCategories(ChatConfigurator.dataSource.getAllMessageCategories())
  // A type absent from those filters is excluded server-side. The bubble appears
  // optimistically when sent, then vanishes on reload — with no error anywhere.
  getAllMessageTypes(): string[] {
    return [...super.getAllMessageTypes(), ORDER_TYPE];
  }

  getAllMessageCategories(): string[] {
    const categories = super.getAllMessageCategories();
    return categories.includes(CometChat.CATEGORY_CUSTOM)
      ? categories
      : [...categories, CometChat.CATEGORY_CUSTOM];
  }
}

// AFTER login(), not merely after init(). CometChatUIKit.login() calls enableExtensions(),
// whose first statement is ChatConfigurator.init() — "re-initialize data source". Anything
// registered earlier is DISCARDED, so a decorator wired at module scope, or straight after
// init(), silently disappears.
await CometChatUIKit.login({ uid: UID });
ChatConfigurator.enable((source) => new OrderDataSource(source));

© cometchat, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/cometchat-react-native-customization of cometchat/cometchat-skills.

Open the folder on GitHubat commit 911b108