fix(resolution): leave built-in Map calls unresolved (#1566) (#1790)

Co-authored-by: Colby McHenry <colbymchenry@users.noreply.github.com>

src/resolution/index.ts

@@ -29,6 +29,7 @@ import { logDebug } from '../errors';
 import { lexicalPathWithinRoot } from '../utils';
 import type { ReExport } from './types';
 import { LRUCache } from './lru-cache';
+import { JS_BUILT_INS } from './js-builtins';
 
 /** Node kinds that can declare supertypes (extends/implements). */
 const SUPERTYPE_BEARING_KINDS = new Set<Node['kind']>([
@@ -70,14 +71,6 @@ function resolveCacheLimit(): number {
 export * from './types';
 
 // Pre-built Sets for O(1) built-in lookups (allocated once, shared across all instances)
-const JS_BUILT_INS = new Set([
-  'console', 'window', 'document', 'global', 'process',
-  'Promise', 'Array', 'Object', 'String', 'Number', 'Boolean',
-  'Date', 'Math', 'JSON', 'RegExp', 'Error', 'Map', 'Set',
-  'setTimeout', 'setInterval', 'clearTimeout', 'clearInterval',
-  'fetch', 'require', 'module', 'exports', '__dirname', '__filename',
-]);
-
 const REACT_HOOKS = new Set([
   'useState', 'useEffect', 'useContext', 'useReducer', 'useCallback',
   'useMemo', 'useRef', 'useLayoutEffect', 'useImperativeHandle', 'useDebugValue',

src/resolution/js-builtins.ts

@@ -0,0 +1,8 @@
+/** Shared JS/TS built-ins for direct references and inferred receiver types. */
+export const JS_BUILT_INS = new Set([
+  'console', 'window', 'document', 'global', 'process',
+  'Promise', 'Array', 'Object', 'String', 'Number', 'Boolean',
+  'Date', 'Math', 'JSON', 'RegExp', 'Error', 'Map', 'Set', 'WeakMap', 'WeakSet',
+  'setTimeout', 'setInterval', 'clearTimeout', 'clearInterval',
+  'fetch', 'require', 'module', 'exports', '__dirname', '__filename',
+]);

src/resolution/name-matcher.ts

@@ -8,6 +8,7 @@ import * as path from 'path';
 import { Language, Node } from '../types';
 import { UnresolvedRef, ResolvedRef, ResolutionContext } from './types';
 import { blankStringContents, stripCommentsForRegex } from './strip-comments';
+import { JS_BUILT_INS } from './js-builtins';
 
 /**
  * Ceiling on how many same-named definitions a FUZZY name-match strategy will
@@ -2194,6 +2195,13 @@ export function matchMethodCall(
       if (typedMatch) {
         return typedMatch;
       }
+      // A known JS/TS builtin receiver is external when it has no project
+      // method (#1566). Inference already strips generics (`Map<K, V>` →
+      // `Map`); do not let Strategy 3 guess an unrelated `get`/`set`/`has`.
+      // Keep the validated match above for a project type shadowing a builtin.
+      if (ESM_FAMILY.has(ref.language) && JS_BUILT_INS.has(inferredType)) {
+        return null;
+      }
     }
   }