Use ES module range check and try both redirect mappings

Co-authored-by: andrewbranch <[email protected]>

Author: Copilot

src/compiler/checker.ts

@@ -3797,12 +3797,14 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             // For other files (not node16/nodenext with impliedNodeFormat), check if we can determine
             // the module format from project references
             if (!targetMode && file.isDeclarationFile) {
-                const redirect = host.getRedirectFromSourceFile(file.path);
+                // Try to get the project reference - try both source file mapping and output file mapping
+                // since declaration files can be mapped either way depending on how they're resolved
+                const redirect = host.getRedirectFromSourceFile(file.path) || host.getRedirectFromOutput(file.path);
                 if (redirect) {
                     // This is a declaration file from a project reference, so we can determine
                     // its module format from the referenced project's options
                     const targetModuleKind = host.getEmitModuleFormatOfFile(file);
-                    if (usageMode === ModuleKind.ESNext && targetModuleKind >= ModuleKind.ES2015) {
+                    if (usageMode === ModuleKind.ESNext && ModuleKind.ES2015 <= targetModuleKind && targetModuleKind <= ModuleKind.ESNext) {
                         return false;
                     }
                 }