the claude code sourcemaps leaked march 31
1import { HOOK_EVENTS } from 'src/entrypoints/agentSdkTypes.js'
2import type { AppState } from 'src/state/AppState.js'
3import { logForDebugging } from '../debug.js'
4import type { HooksSettings } from '../settings/types.js'
5import { addSessionHook, removeSessionHook } from './sessionHooks.js'
6
7/**
8 * Registers hooks from a skill's frontmatter as session hooks.
9 *
10 * Hooks are registered as session-scoped hooks that persist for the duration
11 * of the session. If a hook has `once: true`, it will be automatically removed
12 * after its first successful execution.
13 *
14 * @param setAppState - Function to update the app state
15 * @param sessionId - The current session ID
16 * @param hooks - The hooks settings from the skill's frontmatter
17 * @param skillName - The name of the skill (for logging)
18 * @param skillRoot - The base directory of the skill (for CLAUDE_PLUGIN_ROOT env var)
19 */
20export function registerSkillHooks(
21 setAppState: (updater: (prev: AppState) => AppState) => void,
22 sessionId: string,
23 hooks: HooksSettings,
24 skillName: string,
25 skillRoot?: string,
26): void {
27 let registeredCount = 0
28
29 for (const eventName of HOOK_EVENTS) {
30 const matchers = hooks[eventName]
31 if (!matchers) continue
32
33 for (const matcher of matchers) {
34 for (const hook of matcher.hooks) {
35 // For once: true hooks, use onHookSuccess callback to remove after execution
36 const onHookSuccess = hook.once
37 ? () => {
38 logForDebugging(
39 `Removing one-shot hook for event ${eventName} in skill '${skillName}'`,
40 )
41 removeSessionHook(setAppState, sessionId, eventName, hook)
42 }
43 : undefined
44
45 addSessionHook(
46 setAppState,
47 sessionId,
48 eventName,
49 matcher.matcher || '',
50 hook,
51 onHookSuccess,
52 skillRoot,
53 )
54 registeredCount++
55 }
56 }
57 }
58
59 if (registeredCount > 0) {
60 logForDebugging(
61 `Registered ${registeredCount} hooks from skill '${skillName}'`,
62 )
63 }
64}