With ESLint, JavaScript or TypeScript source code can be analyzed in a sophisticated manner. prettierrc configuration file in the monorepo's root directory with your desired configuration settings and it will be applied to all packages in the monorepo automatically. With Prettier, you can maintain consistency in your formatting across all of your projects. The use of Prettier and ESLint in a monorepo generally works well. Catching common errors during development should be considered a core part of a developer's work, silly and unintentional mistakes that might have passed the compiler test would get caught in the net of a linter such as Eslint, wrong file imports, unused variables e.tc to mention just a few, can be avoided if Eslint is used. Prettier and ESLintĪ large codebase with multiple projects that have multiple people working on them daily over a long period of time has the tendency to be inconsistent in coding style. One of those tools is the Babel Plugin Module Resolver, which you can read more about here: Babel Plugin Module Resolver. There are tools that can help you achieve this tools that will add a new resolver for your modules when your code is being compiled. However, it serves well in the long run when the codebase becomes larger with more folders and files. Using the absolute import method may be stressful as it involves more writing as opposed to adding dots and slashes till you get to your destination. from 'utils/types/date' įrom the code above, the import is now clear, readable, and predictable, as the developers are aware of the exact folder where the piece of code being imported is coming from. The next step is to reference the package in package-a. For example, depends on We need to add the following steps to let Typescrip know about this dependency.įirst, you have to add this in the tsconfig of the first package. When working on multiple packages that depend on another package in a Typescript monorepo, you have to explicitly let Typescript know of this dependency. Managing Packages that Depend on Other Packages Visit the Docs to learn more about TypeScropt Project Reference. With this approach, build times can be greatly improved, components can be logically separated, and your code can be reorganized in a more organized and logical manner. Additionally, it enables the creation of more modular code. They make it possible to divide a huge project into several smaller modules that may all be independently built. The main goal of the development of TypeScript project references was always to assist solve the issue of long compilation times in big TypeScript projects such as a monorepo. One of those tools is Typescript, and in this post, we will be looking at best practices for managing a Typescript monorepo. In the event that somebody makes a breaking change to a shared library, all affected applications will receive that update immediately.Īlthough monorepos do come with their own set of challenges, they also offer a number of benefits with the right tool. However, dependency management is where the real power lies. Sharing code between projects ensures uniformity and predictability in the codebase. This approach enables them to share dependencies, libraries, components, utilities, docs, e.t.c. Large corporations such as Google, Meta, and Microsoft often manage the codebases of multiple projects within the organization in a single monorepo. Hence, many organizations have adopted the strategy of maintaining several projects in a single repository. Monorepos can be advantageous when used with the proper tools. A monorepo, on the other hand, is a code management or architectural concept that consolidates all the isolated codebases of multiple projects into a single mega repository rather than managing them individually. Managing dependencies of multiple projects across multiple repositories can be time-consuming and error-prone.
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