---

Custom Projen Project Type to manage all the alma-cdk/* CDK construts.

Installation

1. Install with npm:

   npm i -D @alma-cdk/construct-library

2. If existing project, install npm i -D [email protected] or newer

3. Import the custom Projen project type:

   - import { AwsCdkConstructLibrary } from 'projen/lib/awscdk';
   + import { cdk } from "projen";
   + import { AlmaCdkConstructLibrary } from "@alma-cdk/construct-library";

4. Initialize and define (at least) minimum required configuration:

   const project = new AlmaCdkConstructLibrary({
     name: "@<SCOPE>/<PACKAGE_NAME>", // or "<PACKAGE_NAME>"
     author: "<AUTHOR_ORGANIZATION_NAME>",
     authorAddress: "<AUTHOR_ORGANIZATION_EMAIL>",
     description: "<PACKAGE_DESCRIPTION>",
     repositoryUrl: "https://<GIT_URL>.git",
     stability: cdk.Stability.EXPERIMENTAL, // or STABLE or DEPRECATED
     majorVersion: 0, // 1, 2, ...
     releaseEnvironment: "production",
   });
   
   project.synth();

5. Fnm use 24

6. Install pnpm

7. Run projen with pnpm:

   pnpm exec projen

8. Ensure correct Node version: fnm use

9. Remove old node_modules, yarn.lock, and/or package-lock.json files

10. Reinstall everything with pnpm install

Release branches

majorVersion is required and defines what the default main branch releases as latest. From it the library also derives a release branch for the next major version, published as a beta prerelease under the beta npm dist-tag – so work on the next major can ship without moving latest:

const project = new AlmaCdkConstructLibrary({
  // ...
  majorVersion: 3, // `main` releases 3.x as `latest`, `4.x` branch releases 4.0.0-beta.N as `beta`
});

Anything passed in releaseBranches is merged on top of that default, keyed by branch name:

releaseBranches: {
  // added alongside the generated `4.x` branch
  "legacy-2.x": { majorVersion: 2, npmDistTag: "legacy" },
},

Using the next major branch name as the key replaces the generated configuration for it (the entry is taken as-is, not merged field by field):

releaseBranches: {
  // replaces the default `4.x` beta configuration
  "4.x": { majorVersion: 4, prerelease: "rc", npmDistTag: "next" },
},

Note: downstream projects that previously declared the ${MAJOR_VERSION + 1}.x branch by hand can now drop it – the generated default is identical.

Upgrading pnpm

The pnpm version is pinned by this library – both in the package.json packageManager field (used locally) and in the CI workflows – so it upgrades together with the library:

1. Upgrade the dependency: pnpm exec projen upgrade (or merge the automated upgrade PR)

2. Regenerate the packageManager field and workflows:

   pnpm exec projen

3. Install with the new version, which pnpm self-downloads and switches to:

   pnpm install

4. Commit the regenerated files: package.json, .github/workflows/* and pnpm-lock.yaml

Notes:

• On a pnpm major upgrade node_modules is recreated; without a TTY to confirm, use CI=true pnpm install.

• pnpmSettings only accepts settings that the pinned pnpm still supports, so options dropped by pnpm v11 are rejected at synth. Most notably, replace onlyBuiltDependencies with allowBuilds: { '<package>': true } – pnpm v11 ignores the former, skipping the builds (which fails the install under strictDepBuilds).

Upgrading downstream packages

pnpm add -D @alma-cdk/[email protected] [email protected] [email protected]