Alex Newman
fb9d917f8a
When Claude reads a file, the PreToolUse hook queries for existing observations about that file and injects the timeline into context via additionalContext + permissionDecision: allow. This prevents duplicate observations and saves tokens through active rediscovery. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
72 lines
2.8 KiB
TypeScript
72 lines
2.8 KiB
TypeScript
/**
|
|
* Event Handler Factory
|
|
*
|
|
* Returns the appropriate handler for a given event type.
|
|
*/
|
|
|
|
import type { EventHandler } from '../types.js';
|
|
import { HOOK_EXIT_CODES } from '../../shared/hook-constants.js';
|
|
import { logger } from '../../utils/logger.js';
|
|
import { contextHandler } from './context.js';
|
|
import { sessionInitHandler } from './session-init.js';
|
|
import { observationHandler } from './observation.js';
|
|
import { summarizeHandler } from './summarize.js';
|
|
import { userMessageHandler } from './user-message.js';
|
|
import { fileEditHandler } from './file-edit.js';
|
|
import { fileContextHandler } from './file-context.js';
|
|
import { sessionCompleteHandler } from './session-complete.js';
|
|
|
|
export type EventType =
|
|
| 'context' // SessionStart - inject context
|
|
| 'session-init' // UserPromptSubmit - initialize session
|
|
| 'observation' // PostToolUse - save observation
|
|
| 'summarize' // Stop - generate summary (phase 1)
|
|
| 'session-complete' // Stop - complete session (phase 2) - fixes #842
|
|
| 'user-message' // SessionStart (parallel) - display to user
|
|
| 'file-edit' // Cursor afterFileEdit
|
|
| 'file-context'; // PreToolUse - inject file observation history
|
|
|
|
const handlers: Record<EventType, EventHandler> = {
|
|
'context': contextHandler,
|
|
'session-init': sessionInitHandler,
|
|
'observation': observationHandler,
|
|
'summarize': summarizeHandler,
|
|
'session-complete': sessionCompleteHandler,
|
|
'user-message': userMessageHandler,
|
|
'file-edit': fileEditHandler,
|
|
'file-context': fileContextHandler
|
|
};
|
|
|
|
/**
|
|
* Get the event handler for a given event type.
|
|
*
|
|
* Returns a no-op handler for unknown event types instead of throwing (fix #984).
|
|
* Claude Code may send new event types that the plugin doesn't handle yet —
|
|
* throwing would surface as a BLOCKING_ERROR to the user.
|
|
*
|
|
* @param eventType The type of event to handle
|
|
* @returns The appropriate EventHandler, or a no-op handler for unknown types
|
|
*/
|
|
export function getEventHandler(eventType: string): EventHandler {
|
|
const handler = handlers[eventType as EventType];
|
|
if (!handler) {
|
|
logger.warn('HOOK', `Unknown event type: ${eventType}, returning no-op`);
|
|
return {
|
|
async execute() {
|
|
return { continue: true, suppressOutput: true, exitCode: HOOK_EXIT_CODES.SUCCESS };
|
|
}
|
|
};
|
|
}
|
|
return handler;
|
|
}
|
|
|
|
// Re-export individual handlers for direct access if needed
|
|
export { contextHandler } from './context.js';
|
|
export { sessionInitHandler } from './session-init.js';
|
|
export { observationHandler } from './observation.js';
|
|
export { summarizeHandler } from './summarize.js';
|
|
export { userMessageHandler } from './user-message.js';
|
|
export { fileEditHandler } from './file-edit.js';
|
|
export { fileContextHandler } from './file-context.js';
|
|
export { sessionCompleteHandler } from './session-complete.js';
|