perf(javascript): index configuration and module lookups

src/domain/javascript/javascriptStaticAnalysisState.ts

@@ -16,6 +16,7 @@ import type {
   ElectronSenderValidationFinding,
   ElectronUtilityProcessFinding,
 } from "./electronStaticAnalysisTypes.js";
+import { JavaScriptModuleRangeIndex } from "./javascriptStaticAnalysisFindings.js";
 
 /** Source offsets for one recovered bundle module factory. */
 export interface JavaScriptModuleRange {
@@ -45,7 +46,7 @@ export interface JavaScriptAnalysisAccumulator {
   readonly senderValidations: LocatedJavaScriptFinding<ElectronSenderValidationFinding>[];
   readonly utilityProcesses: LocatedJavaScriptFinding<ElectronUtilityProcessFinding>[];
   readonly nativeAddonBindings: LocatedJavaScriptFinding<ElectronNativeAddonBindingFinding>[];
-  readonly modules: JavaScriptModuleRange[];
+  readonly moduleRangeIndex: JavaScriptModuleRangeIndex;
   readonly seen: Set<string>;
   visitedNodes: number;
   unknownFindings: number;
@@ -92,22 +93,23 @@ export interface LocatedJavaScriptFindingInput<
 }
 
 /** Create isolated mutable state for one source analysis. */
-export const createJavaScriptAnalysisAccumulator =
-  (): JavaScriptAnalysisAccumulator => ({
-    references: [],
-    endpoints: [],
-    storage: [],
-    roles: [],
-    sourceMaps: [],
-    registrations: [],
-    browserWindows: [],
-    contextBridgeApis: [],
-    ipc: [],
-    senderValidations: [],
-    utilityProcesses: [],
-    nativeAddonBindings: [],
-    modules: [],
-    seen: new Set(),
-    visitedNodes: 0,
-    unknownFindings: 0,
-  });
+export const createJavaScriptAnalysisAccumulator = (
+  sourceLength: number,
+): JavaScriptAnalysisAccumulator => ({
+  references: [],
+  endpoints: [],
+  storage: [],
+  roles: [],
+  sourceMaps: [],
+  registrations: [],
+  browserWindows: [],
+  contextBridgeApis: [],
+  ipc: [],
+  senderValidations: [],
+  utilityProcesses: [],
+  nativeAddonBindings: [],
+  moduleRangeIndex: new JavaScriptModuleRangeIndex(sourceLength),
+  seen: new Set(),
+  visitedNodes: 0,
+  unknownFindings: 0,
+});