fix: fixes ssg cache files not being used by open-next cache handler (#…

…150)

* fix: fixes ssg cache files not being used by open-next cache handler

Closes #149

This will align the cache files generated at deploy time and the open-next cache handler so SSG files are actually looked at.

* use _cache instead of cache

This probably makes sense, using the generally familiar `_` prefix to indicate internal use.

* keep nextjs cache dir config

* third time is the charm - making sure the path for the nextjs cache is correct.

---------

Co-authored-by: Kevin Mitchell <>

src/NextjsBuild.ts

@@ -8,8 +8,8 @@ import {
   NEXTJS_BUILD_IMAGE_FN_DIR,
   NEXTJS_BUILD_REVALIDATE_FN_DIR,
   NEXTJS_BUILD_SERVER_FN_DIR,
-  NEXTJS_CACHE_DIR,
   NEXTJS_STATIC_DIR,
+  NEXTJS_CACHE_DIR,
 } from './constants';
 import { NextjsBaseProps } from './NextjsBase';
 import { NextjsBucketDeployment } from './NextjsBucketDeployment';

src/NextjsStaticAssets.ts

@@ -5,7 +5,7 @@ import { RemovalPolicy } from 'aws-cdk-lib';
 import * as s3 from 'aws-cdk-lib/aws-s3';
 import { Asset } from 'aws-cdk-lib/aws-s3-assets';
 import { Construct } from 'constructs';
-import { NEXTJS_CACHE_DIR } from './constants';
+import { CACHE_BUCKET_KEY_PREFIX } from './constants';
 import { NextjsBucketDeployment } from './NextjsBucketDeployment';
 import { NextjsBuild } from './NextjsBuild';
 
@@ -84,7 +84,7 @@ export class NextjsStaticAssets extends Construct {
     // create temporary directory to join open-next's static output with cache output
     const tmpAssetsDir = fs.mkdtempSync(resolve(tmpdir(), 'cdk-nextjs-assets-'));
     fs.cpSync(this.props.nextBuild.nextStaticDir, tmpAssetsDir, { recursive: true });
-    fs.cpSync(this.props.nextBuild.nextCacheDir, resolve(tmpAssetsDir, NEXTJS_CACHE_DIR), { recursive: true });
+    fs.cpSync(this.props.nextBuild.nextCacheDir, resolve(tmpAssetsDir, CACHE_BUCKET_KEY_PREFIX), { recursive: true });
     const asset = new Asset(this, 'Asset', {
       path: tmpAssetsDir,
     });