1  import { getSessionId } from '../bootstrap/state.js'
 2  import { checkStatsigFeatureGate_CACHED_MAY_BE_STALE } from '../services/analytics/growthbook.js'
 3  import type { SessionId } from '../types/ids.js'
 4  import { isEnvTruthy } from '../utils/envUtils.js'
 5  
 6  // -- config
 7  
 8  // Immutable values snapshotted once at query() entry. Separating these from
 9  // the per-iteration State struct and the mutable ToolUseContext makes future
10  // step() extraction tractable — a pure reducer can take (state, event, config)
11  // where config is plain data.
12  //
13  // Intentionally excludes feature() gates — those are tree-shaking boundaries
14  // and must stay inline at the guarded blocks for dead-code elimination.
15  export type QueryConfig = {
16    sessionId: SessionId
17  
18    // Runtime gates (env/statsig). NOT feature() gates — see above.
19    gates: {
20      // Statsig — CACHED_MAY_BE_STALE already admits staleness, so snapshotting
21      // once per query() call stays within the existing contract.
22      streamingToolExecution: boolean
23      emitToolUseSummaries: boolean
24      isAnt: boolean
25      fastModeEnabled: boolean
26    }
27  }
28  
29  export function buildQueryConfig(): QueryConfig {
30    return {
31      sessionId: getSessionId(),
32      gates: {
33        streamingToolExecution: checkStatsigFeatureGate_CACHED_MAY_BE_STALE(
34          'tengu_streaming_tool_execution2',
35        ),
36        emitToolUseSummaries: isEnvTruthy(
37          process.env.CLAUDE_CODE_EMIT_TOOL_USE_SUMMARIES,
38        ),
39        isAnt: process.env.USER_TYPE === 'ant',
40        // Inlined from fastMode.ts to avoid pulling its heavy module graph
41        // (axios, settings, auth, model, oauth, config) into test shards that
42        // didn't previously load it — changes init order and breaks unrelated tests.
43        fastModeEnabled: !isEnvTruthy(process.env.CLAUDE_CODE_DISABLE_FAST_MODE),
44      },
45    }
46  }