backend-common: switch to using get-packages for listing monorepo packages

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/backend-common/package.json

@@ -36,7 +36,7 @@
     "@backstage/integration": "^0.7.0",
     "@backstage/types": "^0.1.1",
     "@google-cloud/storage": "^5.8.0",
-    "@lerna/project": "^4.0.0",
+    "@manypkg/get-packages": "^1.1.3",
     "@octokit/rest": "^18.5.3",
     "@types/cors": "^2.8.6",
     "@types/dockerode": "^3.3.0",

packages/backend-common/src/config.ts

@@ -27,6 +27,7 @@ import {
 } from '@backstage/config-loader';
 import { AppConfig, Config, ConfigReader } from '@backstage/config';
 import { JsonValue } from '@backstage/types';
+import { getPackages } from '@manypkg/get-packages';
 
 import { isValidUrl } from './urls';
 
@@ -194,11 +195,9 @@ export async function loadBackendConfig(options: {
   // TODO(hhogg): This is fetching _all_ of the packages of the monorepo
   // in order to find the secrets for redactions, however we only care about
   // the backend ones, we need to find a way to exclude the frontend packages.
-  const { Project } = require('@lerna/project');
-  const project = new Project(paths.targetDir);
-  const packages = await project.getPackages();
+  const { packages } = await getPackages(paths.targetDir);
   const schema = await loadConfigSchema({
-    dependencies: packages.map((p: any) => p.name),
+    dependencies: packages.map(p => p.packageJson.name),
   });
 
   const config = new ObservableConfigProxy(options.logger);

yarn.lock

@@ -4300,7 +4300,7 @@
     npmlog "^4.1.2"
     upath "^2.0.1"
 
-"@lerna/project@4.0.0", "@lerna/project@^4.0.0":
+"@lerna/project@4.0.0":
   version "4.0.0"
   resolved "https://registry.npmjs.org/@lerna/project/-/project-4.0.0.tgz#ff84893935833533a74deff30c0e64ddb7f0ba6b"
   integrity sha512-o0MlVbDkD5qRPkFKlBZsXZjoNTWPyuL58564nSfZJ6JYNmgAptnWPB2dQlAc7HWRZkmnC2fCkEdoU+jioPavbg==