Parcel in Monorepos and Large Projects Quiz Quiz

Explore how Parcel streamlines development workflows in monorepos and large projects. This quiz covers configuration strategies, dependency management, and optimization techniques for scalable build systems using Parcel.

1. Configuring Parcel in a Monorepo

   In a monorepo with multiple packages, what is a recommended approach for managing Parcel configuration files to ensure consistency across all packages?

   1. Rely solely on default configuration without any customization
   2. Combine all package configurations into a single huge file
   3. Have each package independently manage completely separate configurations
   4. Create a shared base configuration and extend it in each package

   Explanation: Using a shared base configuration allows all packages in the monorepo to stay consistent, reducing duplication and the chance of misconfigurations. Having each package manage entirely separate configurations can cause confusion and inconsistency. Combining all package configurations into a massive file becomes unwieldy and hard to maintain. Relying on default configuration doesn’t address project-specific needs often present in large projects.

2. Handling Dependencies in Large Projects

   When working with a large project structured as a monorepo, which method helps avoid duplicating dependencies while using Parcel?

   1. Placing dependencies only in the deepest nested folder
   2. Omitting dependencies entirely from sub-packages
   3. Hoisting dependencies to the monorepo root
   4. Installing all dependencies in each sub-package redundantly

   Explanation: Hoisting dependencies to the monorepo root centralizes dependency management, preventing duplication and version conflicts. Installing all dependencies everywhere wastes space and can cause mismatches. Placing them in the deepest nested folder is not standard practice and may lead to resolution issues. Omitting dependencies from sub-packages can result in runtime errors due to missing modules.

3. Parcel's Watch Mode in Monorepos

   How does Parcel's watch mode benefit developers working in a monorepo containing several interconnected projects?

   1. It disables hot reloading across all packages
   2. It forces a full rebuild every time any file changes anywhere
   3. It automatically rebuilds only changed and affected packages
   4. It only watches the root directory for changes

   Explanation: Parcel's watch mode efficiently tracks dependencies and only rebuilds the packages impacted by changes, speeding up development workflows. Disabling hot reloading would slow down feedback. Forcing a full rebuild on every change is inefficient and unnecessary. Watching just the root directory would miss changes inside packages, making the setup unreliable.

4. Optimizing Build Output in Large Projects

   Which Parcel feature helps optimize build performance and output size in large projects by splitting code into smaller chunks?

   1. Bundle overriding
   2. Code splitting
   3. Chunk instancing
   4. Code spooling

   Explanation: Code splitting divides the application into smaller, reusable pieces, enabling faster load times and improved performance. Code spooling is not a relevant feature. Chunk instancing is not a standard term or feature. Bundle overriding does not address performance and output size in this context.

5. Resolving Local Packages in Monorepos

   When a package within a monorepo needs to reference another local package using Parcel, which configuration ensures correct dependency resolution?

   1. Using relative paths to files outside the current package
   2. Ignoring local dependencies in the configuration
   3. Referencing the installed node_modules only
   4. Specifying aliases or custom resolvers for local paths

   Explanation: By defining aliases or custom resolvers, the build tool correctly knows where to find local packages within the monorepo, ensuring smooth dependency resolution. Only referencing node_modules ignores the interconnected package structure. Ignoring local dependencies would likely result in module errors. Using relative paths outside the current package can create maintainability and portability issues.