plan out stacks individually

.github/workflows/plan.yaml

@@ -14,8 +14,46 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  stacks:
+    runs-on: ubuntu-latest
+    outputs:
+      stacks: ${{ steps.stacks.outputs.matrix }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup NodeJS
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: yarn
+          cache-dependency-path: yarn.lock
+
+      - name: Generate Terraform Bindings
+        run: |
+          npx --yes cdktf-cli get
+
+      - name: Install NPM Dependencies
+        run: |
+          rm -rf node_modules/
+          yarn install --frozen-lockfile --production
+
+      - name: Load .env File Contents
+        env:
+          ENV_FILE_CONTENTS: ${{ secrets.ENV_FILE_CONTENTS }}
+        run: |
+          echo "${ENV_FILE_CONTENTS}" | tee .env
+
+      - id: stacks
+        name: Get Stacks
+        run: |
+          echo "matrix={stack: $(npx --yes ts-node main.ts)}" >> $GITHUB_OUTPUT
+
   plan:
     runs-on: ubuntu-latest
+    needs: stacks
+    strategy:
+      matrix: ${{ fromJSON(needs.stacks.outputs.stacks) }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -47,5 +85,5 @@ jobs:
         with:
           mode: plan-only
           githubToken: ${{ secrets.GITHUB_TOKEN }}
-          stackName: '*'
+          stackName: ${{ matrix.stack }}
           updateComment: 'false'

main.ts

@@ -36,7 +36,7 @@ import { container } from 'tsyringe';
 
 process.env.BASE_DIRECTORY = __dirname;
 
-async function main(app: App): Promise<void> {
+async function main(app: App): Promise<string[]> {
   // eslint-disable-next-line @typescript-eslint/no-var-requires
   require('dotenv-expand').expand(require('dotenv').config());
 
@@ -146,14 +146,19 @@ async function main(app: App): Promise<void> {
   if (buildTfCloudStack) {
     buildTerraformCloudStack(app, stacks);
   }
+
+  return Array.from(stacks.keys());
 }
 
 (async (app: App) => {
-  await main(app);
-  return app;
-})(new App()).then((app) => {
+  const stacks = await main(app);
+
+  return { app, stacks };
+})(new App()).then(({ app, stacks }) => {
   if (process.env.CDKTF_OUTDIR) {
     app.synth();
+  } else if (process.env.CI) {
+    process.stdout.write(`${JSON.stringify(stacks)}\n`, 'utf-8');
   } else {
     printTree(
       app,