fix(toolkit-lib): ToolkitError type is not exported

Author: mrgrain

.projenrc.ts

@@ -1176,6 +1176,7 @@ const toolkitLib = configureProject(
       tmpToolkitHelpers,
       'aws-cdk-lib',
       'aws-sdk-client-mock',
+      'dts-bundle-generator',
       'esbuild',
       'typedoc',
     ],

packages/@aws-cdk/toolkit-lib/.projen/deps.json

@@ -2,31 +2,53 @@ import { createRequire } from 'node:module';
 import * as path from 'node:path';
 import * as esbuild from 'esbuild';
 import * as fs from 'fs-extra';
+import { generateDtsBundle } from 'dts-bundle-generator';
 
+// copy files
 const require = createRequire(import.meta.url);
-
 const cliPackage = path.dirname(require.resolve('aws-cdk/package.json'));
-let copyFromCli = (from, to = undefined) => {
+const copyFromCli = (from, to = undefined) => {
   return fs.copy(path.join(cliPackage, ...from), path.join(process.cwd(), ...(to ?? from)));
 };
 
+// declaration bundling
+const bundleDeclarations = async (entryPoints) => {
+  const results = generateDtsBundle(entryPoints.map(filePath => ({
+    filePath,
+    output: {
+      noBanner: true,
+      exportReferencedTypes: false,
+    },
+  })), { preferredConfigPath: 'tsconfig.dev.json' });
+
+  const files = [];
+  for (const [idx, declaration] of results.entries()) {
+    const outputPath = path.format({ ...path.parse(entryPoints[idx]), base: '', ext: '.d.ts' });
+    files.push(fs.promises.writeFile(outputPath, declaration));
+  }
+
+  return Promise.all(files);
+}
+
+
 // This is a build script, we are fine
 // eslint-disable-next-line @cdklabs/promiseall-no-unbounded-parallelism
 await Promise.all([
   copyFromCli(['build-info.json']),
   copyFromCli(['/db.json.gz']),
   copyFromCli(['lib', 'index_bg.wasm']),
   copyFromCli(['lib', 'api', 'bootstrap', 'bootstrap-template.yaml']),
-]);
 
-// # Copy all resources that aws_cdk/generate.sh produced, and some othersCall the generator for the
-// cp -R $aws_cdk/lib/init-templates ./lib/
+  // cdk init is not yet available in the toolkit-lib
+  // copyFromCli(['lib', 'init-templates']),
+]);
 
+// bundle entrypoints from the library packages
 await esbuild.build({
   outdir: 'lib',
   entryPoints: [
     'lib/api/aws-cdk.ts',
-    'lib/api/shared-public.ts', 
+    'lib/api/shared-public.ts',
     'lib/private/util.ts',
   ],
   target: 'node18',
@@ -35,3 +57,6 @@ await esbuild.build({
   sourcemap: true,
   bundle: true,
 });
+
+// for the shared public API we also need to bundle the types
+await bundleDeclarations(['lib/api/shared-public.ts']);