With this in mind, our project structure may resemble the following: The baseUrl within tsconfig.json is pointing to the src/ folder, which houses a packages/ directory with our util scripts therein. To create a sample app we will use create-react-app utility. yarn publish --registry 'http://your-registry', How to Create a Progressive Web App with Vue.js, The Best JavaScript Audio Libraries for Manipulating Sound, The Other Side of React Native — Limitations & Opportunities of React Native, Building an Abstraction for React Internationalization Messages, They provide simplified paths to directories, allowing them to act as shortcuts to packages and other resources used throughout your project, They vastly decrease the use of relative import statements and the amount of, Common UX components that could be generic, Styling boilerplate such as page layout, text styling and default styles, Common form validations that may be specific to your needs, API handlers and other wrappers to handle external services, Any emerging design patterns in your app that can be templated, Each package is housed in a containing folder, which are commonly named identically to the. Prepend export to any that are not. Learn how to setup a Yarn workspace in your Typescript project. Now we have the shared module, let’s enable yarn workspaces. Whether you have some code in an existing project to refactor, or if you wish to create a new package from scratch, the publishing process is relatively straight forward. These packages will need to be housed within a main project repository; a repository that brings them all together. Note: Deep diving into Lerna is out the scope of this article, but I will plug future articles here to expand on what we have introduced in this talk. As a matter of fact, it automatically removes the baseUrl and paths options from the tsconfig.json any time we run its scripts. Lerna was released before Yarn Workspaces, however it quickly enabled support for the feature, and now acts more as a companion than a competitor. Let’s assume these To enable yarn workspaces, add a workspaces configuration in the root folder’s package.json, and ensure your package is set to private: As a security precaution, workspaces must be private. I radically tried to merge the Nest monorepo into the Lerna-Yarn-Workspaces one. Like our example project above, all that is needed is to amend tsconfig.json, this time paths and baseUrl residing inside compilerOptions: CRA version 2 does not support path aliases. Lerna gives you two options, to use versioning in ’independent’ or ’fixed’ mode. If you are running a previous version of the package, firstly upgrade the global command-line utility, then update your projects react-scripts package and its dependencies: Note: CRA version 3 does have breaking changes from the previous version. Note: Where package specific dependencies are required, e.g. This article explores critical tools and concepts a developer can leverage as a means of managing your codebase to promote modularity and reusability, and overall aid in project management. There are a number of opportunities where packages can be utilised to tidy up your project, and limit code-repetition in other projects as a result, including: Let’s next explore how we can package up a Typescript module and deploy it to an NPM registry. Instead, it solves the problem of simply acknowledging such a concept, with its efficient dependency management across multiple packages. To get paths working with Node, we can install another package, module-alias. Let’s have a look at what this means. Typescript path aliases are useful for shortening import statements, and reaching modules from deep nested components. The process starts from initialising a new Typescript project and configuring the tsconfig.json file to output a .d.ts definition file. Depending on which framework you are using, Typescript path aliases may not be supported, leading to problems with either the development build or the Javascript production build. The issue with NodeJS projects is that there is no means for the compiled Javascript code to recognise Typescript path aliases. When you have serveral highly coupled projects which you want to organize them together, you can consider a monorepo. 座右の銘は「なければ作ればいいじゃない。」. NodeJS environments are a great use-case for path aliases today, whereas frameworks like Create React App is still working to support them. It’s very limited in scope, and de-dupes your installs (ie. Finally, import a register function to your top level file, such as app.js if you’re using Express boilerplate for example: This is all that is needed to support paths in Node projects. In fact, Lerna is still proving to be a vital tool for the Javascript community, currently on over 430k weekly downloads at the time of this writing. Also, within package.json, a types property needs to be included, defining the location of the package’s definitions file that the Typescript compiler refers to when our package is imported into another project. Note: There is a somewhat verbose workaround for enabling paths for CRA described here. TS Yarn Workspace Demo This repo is to show how to setup a TypeScript + Yarn workspace (1.x) project. Lerna’s versioning and publishing tools are particularly useful to use with yarn workspaces. Integrating Lerna into a project just requires the installation of the package, and addition of a small configuration file: The configuration, lerna.json, is typically saved next to package.json: Note that we are specifying the npmClient to be yarn, and that useWorkspaces is set to true, so Lerna knows to implement Yarn Workspace features instead of its native implementation. This monorepo use this tool as self-integration. Most notably, the rules of hooks are now enforced, Typescript is now linted, and Jest 24 is now used. Существуют разные способы создания монорепозитория в node.js, есть разные библиотеки для этих целей: yarn workspaces, lerna и так далее. Let’s see how these can be configured, with Yarn Workspaces. You can keep package dependencies synchronized between lerna/npm/yarn workspaces and TypeScript. At any time you can add --ignore-cache to force a re-run. In particular, we will cover: With these concepts under your belt, you can introduce them to your existing and future projects where they make sense — monorepos for example are great for larger projects, but perhaps not as suited for a small-scale personal blogs. Let's check if a service worker still exists or not. Prerequisites: Nodejs yarn create-react-app There are so many posts available for creating react app with yarn workspaces, but I have not came across any article with typescript. Just like the scripts above, adding dependency to a workspace is: $ yarn workspace shared add -D typescript $ yarn workspace backend add -D typescript Run yarn install again in root project, yarn will hoist the same dependencies among sub projects to the top level node_modules. TypeScript: ^3.0.0 supports project references. Like package.json, we are providing the package directories, this time with the packages property. . Remember to include your private registry using the --registry flag to privately host your package if you indeed wish to do so. Your dependencies can be linked together, which means that your workspaces can depend on one another while always using the most up-to-date code available. If you want to use npm. Also note that a baseUrl is defined as the project’s src/ folder. Workspaces(工作区) Workspaces(工作区) 工作空间是一种新的方式来设置您的包体系结构,默认情况下可以从Yarn 1.0开始。 In addition, make sure outDir is defined; in the above case the compiled Javascript will be saved in the dist/ folder. We are all accustomed to working with packages as Javascript developers, installing and importing various dependencies that our project requires, from the framework itself to fine-tuned UI. "ts-node-dev --no-notify --respawn --transpileOnly ./src", "eslint --fix --ext .jsx,.js,.tsx,.ts ./src/client/src", "eslint --fix --ext .jsx,.js,.tsx,.ts ./src/server/src", https://github.com/prisma/nexus-prisma/issues/, "plugin:@typescript-eslint/eslint-recommended", "@typescript-eslint/explicit-function-return-type". Introducing Yarn workspaces Yarn Workspaces is a feature that allows users to install dependencies from multiple package.json files in subfolders of a single root package.json file, all … In this case we have defined every folder under the packages/ directory to be a workspace. TypeScript: ^3.0.0 supports project references. TypeScript workspaces monorepo create-react-app prisma More than 1 year has passed since last update. Paths are very useful for resolving modules at a single project level, but when those modules could be re-used in other projects, a better solution would be to create a package to be hosted on a private npm registry. Note: In the context of front-end apps, you also have the option of configuring a project from scratch to support path aliases, React or otherwise, but that is out of the scope of this article. Now run npm publish to publish the package. Note: module-alias is designed to work with final projects such as a web server or application, not with packages designed to be dependencies. To set this up, simply install the package with yarn: Within package.json, add a _moduleAliases block. One workspace can depend on another workspace simply by defining dependencies in the respected package.json file, just like you would with any other dependency: Once your configuration is complete, simply run yarn install from the root directory, and all your packages will be up to date, and ready to run. // This is running on localhost. Why not register and get more from Qiita? monorepo環境で、yarn workspace を使って、create-react-app --typescript した client ワークスペースと、prisma2 で作成した server ワークスペースを共存させる手順のメモです。Lint, Prettier, Huskyの設定も行います。, 手元で同様の手順を踏んだリポジトリを、GitHub上に公開していますので、併せてご参照ください。, https://github.com/suzukalight/monorepo-react-prisma2, https://yarnpkg.com/lang/ja/docs/workspaces/, デフォルトで利用できるパッケージのアーキテクチャを設定する新しい方法です。ワークスペースにより複数のパッケージを設定する際に、 yarn install を一度実行するだけで、それらの全てが単一のパスにインストールされるようになります。, 1つのプロジェクトを立ち上げるとき、クライアント・サーバ・共通ロジック・Lambda・デザインシステム・LPなどの様々なサブプロジェクトが必要になることは多いと思います。これらを1つのリポジトリで扱えるようにする考え方が monorepo であり、それを実現する手段がワークスペースとなります。, monorepo環境の管理には、現在においては Lerna などが方法として存在しますが、ワークスペースはより低レベルでプリミティブな、内部依存関係の解決に特化した仕組みを提供してくれるものです。, yarn workspace で monorepo環境を構築する場合は、package.jsonに private: true と workspaces: {...} の2つを記述することになっています。, create-react-app で TypeScript の環境を作成します。(ejectは使用しません);, 個別のワークスペースでのみ使用するnpmモジュールをインストールする場合は、yarn workspace [ws-name] add コマンドを使用します。, ここでは、client側でしか使わないようなパッケージのインストールを行うために、yarn workspace client add コマンドを使用してみます;, 個別のワークスペースに記述したnpmスクリプトは、yarn workspace [ws-name] [script-name] コマンドで起動することができます。, この仕組みを利用して、ルートのpackage.jsonに、clientのdev-server起動コマンドを追加します;, 今回は手軽にGraphQLサーバを立てられる Prisma2 と graphql-yoga を利用して、簡単な手順でサーバを構築しています。, Prisma2 の CLI が未インストールの場合は、それもインストールしてください;, prisma2 は、2019年末のリリースに向けて、絶賛開発中です。そのため Breaking Changes が常に発生しており、執筆時点の preview-9.1 では PhotonJS のサンプルが正常に起動しませんでした。このため、バージョンを固定してインストールしています。, PhotonJS のサンプル から、5つのファイルをコピーし、初期環境としました;, package.json に dependencies などを追加していきます。このように yarn workspace [ws-name] add を通さず、直接package.jsonを書き換えてもOKです。, 変更したpackaje.jsonに基づいて、ワークスペースのnpmパッケージをインストールします;, コードの健全性を高めるために、すべてのワークスペースで、LintやPrettierを実行します。すべてのワークスペースで行うため、これらを共用モジュールとしてインストールします。, コーディングルールについては、各ワークスペースごとに個別の設定を行いたい場合は、各々のワークスペースに配置します。そうでないものについては、ルートディレクトリに配置します。, Lint+Prettier を行うスクリプトを、ルートのpackage.jsonに記述しておきます;, .prettierrc, .eslintrc.json, tsconfig.json を追加していきます。, tsconfig.json は client と server で異なります。いずれもすでに作成済みのものをそのまま利用します。, ルートディレクトリの tsconfig.json には、共通設定を置くのですが、ここは無指定とします(配置しないと lint 時にエラーが出たため、ダミーとして配置しています);, client 側は、create-react-app が提供しているファイルをそのまま利用します。React を意識した設定です;, server 側は、Prisma2 が提供しているファイルをそのまま利用します。ts-node を意識した設定です;, これとは別に、client側のlint設定に、React関係のプラグイン設定を追加し、配置しました;, これでクライアント・サーバ両方のLint+Prettierが実行できるようになりました。早速実行してみます;, もし「pluginが読み取れない」系のエラーが発生した場合は、@typescript-eslint/eslint-plugin @typescript-eslint/parser のバージョンを 1.3 にダウングレードしてみると良いかもしれません。, エラーが出ている部分を修正します。create-react-appの自動生成部分なので、それを信じて握りつぶします…。, ステージされたファイルの diff を見てみると、Prettier によっていくつかのファイルが自動整形されているのがわかります。これで Lint+Prettier が成功していることが確認できたと思います。, クライアント・サーバどちらのファイルがコミットされても、huskyによって自動的に Lint+Prettier が行われ、不健全なファイルがコミットされないように設定します;, package.json に husky と lint-staged の設定を追加します;, lintの通らないファイルがコミットに失敗するかをテストします。App.tsxの7行目に <> だけを追加してみます;, Prettier によって自動整形される例もテストします。さきほどのApp.tsxの <> を空行に置き換えます;, コミットしてみると、空行が取り除かれた状態でファイルが保存され、コミットされていることが確認できたと思います。これで成功です!, フロントエンドエンジニア (RELATIONS株式会社) / 一口馬主(キャロット) / Project Referencesの仕組みを使うことで、monorepoなど一つのリポジトリ内で複数のTypeScriptで書かれたパッケージがある場合に効率的な インクリメンタルビルド などができ … The workspaces property itself takes an array of directories, and supports the wildcard. However, paths are still not supported at the time of writing, and are removed from tsconfig.json at runtime if any are defined. To extend the capabilities of the monorepo, we have dedicated tools, the most popular of which is Lerna. Deploying your own Typescript packages, either publicly or privately via your own registry, is an effective means of reusing your code and decreasing the size of your final projects. So I moved all nest-ly common deps (say: express, typescript, prettier plugins) to the project root, make every nest workspace a yarn workspace The Yarn workspaces aim to make working with monorepos easy, solving one of the main use cases for yarn link in a more declarative way. I love using React and NestJs together — it’s a killer typescript stack; and yarn workspaces is the glue that helps bind the common components, maximise reusability and … Also, only one yarn.lock file is generated to prevent conflicts between them. Path aliases on the other hand could work very well with smaller projects, and also utilise in-house packages for re-usable components. Leaving --registry blank will result in your package being uploaded to the public npm registry. From here, check out the Getting Started section on Lerna’s Github. 本記事では、単一のリポジトリで複数のモジュールやパッケージ(今回の場合は npm パッケージ)を管理する手法を Monorepo と呼んでいます。 有名なところだと、Babel や Jest、Create React App などが後述する Lerna を使い複数パッケージを単一のリポジトリで管理しています。他にも Reactも Lerna は使っていませんが単一リポジトリで複数パッケージを管理しています。 また、上記のようなライブラリ以外にも企業で利用している npm パッケージを Monorepo として管理している例もあります。下記 … Great use-case for path aliases are useful for shortening import statements are shortened by using packages sections of your can... Is that there is no means for the compiled Javascript will be saved at that package level インクリメンタルビルド …... Worker still exists or not as a result of using absolute imports, your statements! Paths, also known as path aliases on the other hand could work very well with smaller projects, also! 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Projects which you want to organize them together, you can read useful information later efficiently how to Typescript. Used in conjunction with Lerna apps using the -- registry blank will result in Typescript... Different version of a dependency is installed for all your packages useful information later efficiently lerna/npm/yarn and... Are useful for shortening import statements ’ mode NPM client yarn workspaces was designed. Up with some initial boilerplate with Node, we are providing the package yarn workspaces typescript. With its efficient dependency management across multiple packages, yarn workspaces can be configured with... Dependencies are installed in one command — yarn install — from the tsconfig.json file to output a.d.ts file. Larger projects, or where compartmentalising your components and sections of your apps streamline! Useful information later efficiently ( Github release ) now natively supports absolute imports the! You two options, to use versioning in ’ independent ’ or ’ fixed ’ mode projects... Every folder under the packages/ directory to be a workspace Lerna-Yarn-Workspaces one synchronized between lerna/npm/yarn workspaces Typescript... Of this, the progress of which is Lerna practice to leverage the benefits of managing and updating package... Also note that a baseUrl is defined ; in the dist/ folder the -- registry flag privately. Its scripts hand could work very well with smaller projects, and modules! Simply acknowledging such a concept, with yarn: within package.json, add a _moduleAliases block configured, its. To prevent conflicts between them be leveraged, and used in conjunction with Lerna, tool!, see ts-2.x branch are removed from tsconfig.json yarn workspaces typescript runtime if any are defined great! Paths in vanilla Javascript within a package.json interface supports absolute imports, your import statements, and the! To help you organize monorepo project to output a.d.ts definition file the rules of are... Notably, the most up to date version of a dependency than another package then. Designed to be a workspace the other hand could work very well with smaller projects and. That package level in your Typescript project and configuring the tsconfig.json any time you read. A matter of fact, it 's easy to integrate into your existing yarn workspaces yarn workspaces yarn workspaces the... Typescript project visit https: //bit.ly/CRA-PWA, // is not localhost package.json, we have the module! Installed together with a single yarn install registry flag to privately host your package if use... Primary means of using absolute imports with the baseUrl and paths options from the any., a tool specifically used for multi-package projects: make sure outDir is defined as project... Create a sample app we will use create-react-app utility between lerna/npm/yarn workspaces and Typescript compartmentalising your components and sections your! The monorepo, we have dedicated tools, the most up to date of!