diff --git a/.bazelignore b/.bazelignore
index cd61d32f8e..c55c9439ca 100644
--- a/.bazelignore
+++ b/.bazelignore
@@ -1,18 +1,22 @@
+# Bazel does not yet support wildcards or other .gitignore semantics for
+# .bazelignore. Two issues for this feature request are outstanding:
+# https://github.com/bazelbuild/bazel/issues/7093
+# https://github.com/bazelbuild/bazel/issues/8106
 .git
 node_modules
 dist
 aio/content
 aio/node_modules
 aio/tools/examples/shared/node_modules
+packages/bazel/node_modules
 integration/bazel/bazel-bazel
 integration/bazel/bazel-bin
 integration/bazel/bazel-out
 integration/bazel/bazel-testlogs
-integration/bazel/node_modules
-integration/bazel/.yarn_local_cache
-integration/bazel-schematics/node_modules
-integration/bazel-schematics/.yarn_local_cache
 integration/bazel-schematics/demo
+# All integration test node_modules folders
+integration/bazel/node_modules
+integration/bazel-schematics/node_modules
 integration/cli-hello-world/node_modules
 integration/cli-hello-world-ivy-compat/node_modules
 integration/cli-hello-world-ivy-i18n/node_modules
@@ -37,6 +41,9 @@ integration/side-effects/node_modules
 integration/terser/node_modules
 integration/typings_test_ts36/node_modules
 integration/typings_test_ts37/node_modules
+# All integration test .yarn_local_cache folders
+integration/bazel/.yarn_local_cache
+integration/bazel-schematics/.yarn_local_cache
 integration/cli-hello-world/.yarn_local_cache
 integration/cli-hello-world-ivy-compat/.yarn_local_cache
 integration/cli-hello-world-ivy-i18n/.yarn_local_cache
@@ -61,4 +68,30 @@ integration/side-effects/.yarn_local_cache
 integration/terser/.yarn_local_cache
 integration/typings_test_ts36/.yarn_local_cache
 integration/typings_test_ts37/.yarn_local_cache
-packages/bazel/node_modules
+# All integration test NPM_PACKAGE_MANIFEST.json folders
+integration/bazel/NPM_PACKAGE_MANIFEST.json
+integration/bazel-schematics/NPM_PACKAGE_MANIFEST.json
+integration/cli-hello-world/NPM_PACKAGE_MANIFEST.json
+integration/cli-hello-world-ivy-compat/NPM_PACKAGE_MANIFEST.json
+integration/cli-hello-world-ivy-i18n/NPM_PACKAGE_MANIFEST.json
+integration/cli-hello-world-ivy-minimal/NPM_PACKAGE_MANIFEST.json
+integration/cli-hello-world-lazy/NPM_PACKAGE_MANIFEST.json
+integration/cli-hello-world-lazy-rollup/NPM_PACKAGE_MANIFEST.json
+integration/dynamic-compiler/NPM_PACKAGE_MANIFEST.json
+integration/hello_world__closure/NPM_PACKAGE_MANIFEST.json
+integration/hello_world__systemjs_umd/NPM_PACKAGE_MANIFEST.json
+integration/i18n/NPM_PACKAGE_MANIFEST.json
+integration/injectable-def/NPM_PACKAGE_MANIFEST.json
+integration/ivy-i18n/NPM_PACKAGE_MANIFEST.json
+integration/language_service_plugin/NPM_PACKAGE_MANIFEST.json
+integration/ng_elements/NPM_PACKAGE_MANIFEST.json
+integration/ng_elements_schematics/NPM_PACKAGE_MANIFEST.json
+integration/ng_update/NPM_PACKAGE_MANIFEST.json
+integration/ng_update_migrations/NPM_PACKAGE_MANIFEST.json
+integration/ngcc/NPM_PACKAGE_MANIFEST.json
+integration/platform-server/NPM_PACKAGE_MANIFEST.json
+integration/service-worker-schema/NPM_PACKAGE_MANIFEST.json
+integration/side-effects/NPM_PACKAGE_MANIFEST.json
+integration/terser/NPM_PACKAGE_MANIFEST.json
+integration/typings_test_ts36/NPM_PACKAGE_MANIFEST.json
+integration/typings_test_ts37/NPM_PACKAGE_MANIFEST.json
diff --git a/integration/.gitignore b/integration/.gitignore
index d5e4f29b8c..fb41a5d18f 100644
--- a/integration/.gitignore
+++ b/integration/.gitignore
@@ -9,3 +9,4 @@ tmp/
 **/*.ngsummary.json
 **/*.ngsummary.ts
 **/.yarn_local_cache*
+**/NPM_PACKAGE_MANIFEST.json
\ No newline at end of file
diff --git a/tools/npm_integration_test/test_runner.js b/tools/npm_integration_test/test_runner.js
index 927c71f935..d4285ce283 100644
--- a/tools/npm_integration_test/test_runner.js
+++ b/tools/npm_integration_test/test_runner.js
@@ -140,6 +140,7 @@ class TestRunner {
     this.config = config;
     this.successful = 0;
     this._setupTestFiles();
+    this._writeNpmPackageManifest();
   }
 
   /**
@@ -297,6 +298,27 @@ class TestRunner {
       log(`test files from '${rootDirectory(this.config.testFiles)}' copied to tmp folder ${this.testRoot}`);
     }
   }
+
+  /**
+   * @internal
+   *
+   * Write an NPM_PACKAGE_MANIFEST.json file to the test root with a mapping of
+   * the npm package mappings for this this test. Integration tests can opt
+   * to use this mappings file instead of the built-in `patch-package-json`
+   * command.
+   */
+  _writeNpmPackageManifest() {
+    if (!this.testRoot) {
+      fail(`test files not yet setup`);
+    }
+    const manifest = {};
+    for (const key of Object.keys(this.config.npmPackages)) {
+      manifest[key] = runfiles.resolveWorkspaceRelative(this.config.npmPackages[key]);
+    }
+    const manifestPath = `${this.testRoot}/NPM_PACKAGE_MANIFEST.json`;
+    fs.writeFileSync(manifestPath, JSON.stringify(manifest, null, 2));
+    log(`npm package manifest written to ${manifestPath}`);
+  }
 }
 
 const config = require(process.argv[2]);