New Hook

Create New Hook

Create a new custom React hook following project conventions.

Initialization

When invoked:

1. Read .claude/knowledge/domain/hook-patterns.md for layer-appropriate hook templates
2. Read .claude/docs/project-rules.md for project conventions (two-layer pattern, address safety, etc.)
3. Read .claude/docs/data-patterns.md for the two-layer hook architecture overview

Instructions

1. Parse the hook name from $ARGUMENTS
2. Ensure the name starts with use
3. Determine the file path and layer:
   • blockchain/useGet*Live.ts — Transform hooks (Layer 2: wraps Ponder hook + transforms data)
   • blockchain/useGet*.ts — Contract read hooks (uses useReadContract)
   • blockchain/use[Action].ts — Contract write hooks (simulate → write → state machine)
   • ponder/usePonder*.ts — Raw Ponder hooks (Layer 1: usePonderQuery)
   • If includes /, use that subfolder under src/hooks/
   • Otherwise, place directly in src/hooks/
4. Create the hook file with:
   • Proper TypeScript return types
   • JSDoc documentation
   • ChainContainer.useContainer() for chain/wallet state (never wagmi directly)
   • enabled guards for conditional queries
   • Error handling where appropriate
5. If the hook needs shared types, add them to src/types/

Template (General)

import { useState, useEffect } from "react";

interface UseHookNameParams {
  // Add params here
}

interface UseHookNameReturn {
  // Add return type here
}

/**
 * Description of what this hook does
 * @param params - Hook parameters
 * @returns Hook return value
 */
export const useHookName = (params: UseHookNameParams): UseHookNameReturn => {
  // Hook implementation

  return {
    // Return values
  };
};

Layer-Specific Patterns

See .claude/knowledge/domain/hook-patterns.md for complete templates for:

• Ponder query hooks (raw data layer)
• Transform hooks (typed domain objects)
• Contract read hooks
• Contract write hooks (simulate → write → state machine)

Verification

After creating the hook:

yarn typecheck && yarn lint && yarn prettier && yarn build