Merge pull request #4471 from dmichon-msft/heft-typescript-dts-map-fix

[heft-typescript] Fix updateShapeSignature break

Author: dmichon-msft

common/changes/@rushstack/heft-typescript-plugin/heft-typescript-dts-map-fix_2024-01-02-21-31.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@rushstack/heft-typescript-plugin",
+      "comment": "Fix break in watch mode during updateShapeSignature call.",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@rushstack/heft-typescript-plugin"
+}

heft-plugins/heft-typescript-plugin/src/configureProgramForMultiEmit.ts

@@ -51,7 +51,9 @@ export function configureProgramForMultiEmit(
     // Attach the originals to the Program instance to avoid modifying the same Program twice.
     // Don't use WeakMap because this Program could theoretically get a { ... } applied to it.
     [INNER_GET_COMPILER_OPTIONS_SYMBOL]?: TTypescript.Program['getCompilerOptions'];
-    [INNER_EMIT_SYMBOL]?: TTypescript.Program['emit'];
+    [INNER_EMIT_SYMBOL]?: // https://github.com/microsoft/TypeScript/blob/88cb76d314a93937ce8d9543114ccbad993be6d1/src/compiler/program.ts#L2697-L2698
+    // There is a "forceDtsEmit" parameter that is not on the published types.
+    (...args: [...Parameters<TTypescript.Program['emit']>, boolean | undefined]) => TTypescript.EmitResult;
   }
 
   const program: IProgramWithMultiEmit = innerProgram;
@@ -118,15 +120,17 @@ export function configureProgramForMultiEmit(
     writeFile?: TTypescript.WriteFileCallback,
     cancellationToken?: TTypescript.CancellationToken,
     emitOnlyDtsFiles?: boolean,
-    customTransformers?: TTypescript.CustomTransformers
+    customTransformers?: TTypescript.CustomTransformers,
+    forceDtsEmit?: boolean
   ) => {
     if (emitOnlyDtsFiles) {
       return program[INNER_EMIT_SYMBOL]!(
         targetSourceFile,
         writeFile,
         cancellationToken,
         emitOnlyDtsFiles,
-        customTransformers
+        customTransformers,
+        forceDtsEmit
       );
     }
 
@@ -151,7 +155,8 @@ export function configureProgramForMultiEmit(
           writeFile && wrapWriteFile(writeFile, moduleKindToEmit.jsExtensionOverride),
           cancellationToken,
           emitOnlyDtsFiles,
-          customTransformers
+          customTransformers,
+          forceDtsEmit
         );
 
         emitSkipped = emitSkipped || flavorResult.emitSkipped;