In the rapidly evolving landscape of software development, the way we store, version, and distribute code has undergone a radical transformation. Gone are the days of monolithic codebases where a single change required rebuilding an entire application. Today, the industry standard is modularity—breaking down complex systems into smaller, reusable, and independent components. At the heart of this paradigm shift lies a critical concept that is gaining traction among DevOps engineers, platform architects, and tech leads: Modrepo .
"name": "@mycompany/billing-modrepo", "workspaces": ["packages/*", "services/*"] modrepo
: Define strict size limits. When a module becomes too independent or stable, spin it off into its own modrepo. Pitfall 2: Circular Dependencies Across Modrepos If modrepo A depends on a package from modrepo B , and modrepo B also depends on a package from modrepo A , you’ve created a cycle that forces simultaneous releases—defeating the purpose of modularity. In the rapidly evolving landscape of software development,
: Enforce acyclic dependency rules. Use tools like depcruise (JS) or modgraph (Go) to visualize and block dependency cycles. Pitfall 3: Neglecting Developer Experience If every change across three modules in a modrepo requires rebuilding all three from source on every CI run, developers will lose patience. At the heart of this paradigm shift lies
# .github/workflows/ci.yml on: [push] jobs: test-changed-modules: runs-on: ubuntu-latest steps: - uses: dorny/paths-filter@v3 id: filter with: filters: | invoice-service: - 'services/invoice-service/**' billing-models: - 'packages/billing-models/**' - name: Test Invoice Service if: steps.filter.outputs.invoice-service == 'true' run: cd services/invoice-service && npm test Decide on versioning independent or unified. Then automate publishing. For independent versioning using Changesets:
// package.json at root of modrepo