Tsconfig extends merge paths You can read more about how references works in the Project References section of the handbook Hosts TSConfigs to extend in a TypeScript app, tuned to a particular runtime environment - tsconfig/bases None of the "extends" are working, giving me the error TS6053: File 'tsconfig. Also, using the paths options should always work as a pair with the baseUrl in order to solve the resolution problem. And then extend it for each project (backend tsconfig. 8. json", } Thay way all the subprojects will inherit the paths from other general packages. So when you provide paths in an app's tsconfig, it is overriding the paths in the base tsconfig, hence your libraries are not being found. change each child config to extend the root config: "extends": ". The value of extends is a string which contains a path to another configuration file to inherit from. This looks like it behaves as designed . json that applies different compilerOptions for different paths? For example, I have a src, test (vitest), and cypress directory. json file is the heart of every TypeScript project. json provides the base configuration for both application code and node. json extends or overrides settings to benefit only the application code. server. For example, in the tsconfig. Jan 21, 2022 · However, as NX's root tsconfig uses paths to map to libraries, this is no longer a valid solution. js environment but tsconfig. vite. From allowJs to useDefineForClassFields the TSConfig reference includes information about all of the active compiler flags setting up a TypeScript project. js's require (). It’s worth Introduction The tsconfig. Below is my folder structure (simplified, but keeping the actual hierarchy): The tsconfig. json' not found. May 16, 2024 · Leverage `extends` for common settings: If you have multiple TypeScript projects with common settings, consider using a base `tsconfig. The path may use Node. g. json have compilerOptions, include, files and extends, I'll be describing the extends feature suggestion. json file you have. In my monorepo, I'd like to code a vitest-config project, using auto-import, and some common config in it's config file, then I can extend this config file in my every app project. 💻 Use Cases What do you want to use this for? Jul 23, 2025 · The main config tsconfig. Make sure each dependent config extends the root config and has the correct path to it, e. json file with an extends field, it loads the base configuration and then merges the settings from the current configuration file. Remember: The paths property does not merge entries from multiple tsconfig files as the "extends" argument implies. To do so, I would add a nested dot array [""] reminding spread operator to the property I want to merge. Learn how to set them up and improve your TypeScript code maintainability. That's why you need something like tsx for path aliases to work with node. /apps/nuxtapp directory. ts └── tsconfig. custom. json file in each of the projects you should use extends on the root tsconfig like this: // A/tsconfig. Root tsconfig. json" . app. json, but it would be useful to take more paths. One aspect that cost me more hours than I care to admit is parameters like include or files are not merged, but instead overwritten by child configurations. It just like how I deal with my tsconfig and eslint config, Could it be possible? The difference basically is in the "direction", so to say, that people use it. . It's relative to the location of the tsconfig. json file containing the extends, not the executing directory. But only the base defines the paths and the baseUrl. ts to The extends field is a string that specifies the path to another tsconfig. paths in tsconfig is to inform the tsc compiler on how to resolve a path, it is assumed that whatever runtime where the code is executed does in fact resolve the path that way. 2. json, and I wanted to use it to avoid using the following ugly paths: The project organization is a bit weird because we have a mono-repository that Feb 5, 2024 · Function: Introduced in TypeScript 3. Jun 29, 2018 · The "paths" option can be used to inform the compiler of mappings but it does not perform these path transformations by itself. Nonetheless, here is a solution that you can use to How this setting affects your build. 0 keywords: inherit, inherited, inheritance, extended, extends loadTsConfig performs a deep merge on extended configurations: https://github. json, that other modules can extend / modify. Overriding Inherited Configurations Even after extending a configuration, you can still override specific settings in your local tsconfig. json, frontend tsconfig. Latest version: 4. Many tools provide this feature, but it works a little differently in each place. 2. json ensures a smooth developer experience and reliable builds. why typescript does not resolve my absolute path to relative paths on build The value of extends is a string which contains a path to another configuration file to inherit from. json { "extends": ". base that I extend in each workspace I don't want to collapse the values from the expo tsconfig into the local one, because it comes from the expo lib and might change in the future Jun 30, 2021 · if you want to share some or most settings between projects to be DRY or to enforce consistency, you can: put another tsconfig in the root and move all the common settings to it. json doing the extending. With that information, you can understand that what you are trying to achieve by extending the base tsconfig can't work as you expecting it to do. There are packages available to help resolve this problem such as module-alias and tsconfig-paths. Why do I want this? Tsconfig files are copied, pasted, or left as out-of-sync widows 😥 throughout projects. But there are several techniques and practices that may one day become standards. Feb 18, 2024 · In the tsconfig. Nov 16, 2023 · Regarding merge and raw configs on the base config, I think options should be ignored entirely if the tsconfig does not extend another. I was reading about path-mapping in file tsconfig. file. Its critical that both are set up correctly. But rawExtend looks like a great way of establishing those standards for path-like properties. Jun 22, 2017 · The good news is that in the same docs you will find: A tsconfig. A series of entries which re-map imports to lookup locations relative to the baseUrl if set, or to the tsconfig file itself otherwise. json the paths or settings that is specified will override the tsconfig. Dec 9, 2019 · Something to know is that tsconfig extends is an override and not a merge. Oct 25, 2019 · Then, references all paths from baseurl. Paths of a base tsconfig get overwritten by the paths in the derived tsconfig. If resolution fails for one path, the next one in the array will be attempted until resolution succeeds or the end of the array is reached. Is there any way to use more than one "extends" value? I have an expo project that is setup to extend their internal tsconfig, but I am also using a monorepo and would like to have a tsconfig. json Put all the common settings in the root tsconfig. I am unsure if this is something simple I am overlooking but I don't see why it won't extend. com/dividab/tsconfig-paths/blob/d1cb8f5ee3d735bcef1e2efa04d315f6d6c8071c/src/tsconf A series of entries which re-map imports to lookup locations relative to the baseUrl if set, or to the tsconfig file itself otherwise. Project references are a way to structure your TypeScript programs into smaller pieces. Mar 7, 2017 · Tsconfig inheritance is an override and not a merge. js server after each change made to tsconfig. TypeScript 扩展 monorepo 的 “paths” tsconfig 文件 在本文中，我们将介绍如何使用 TypeScript 的 'paths' tsconfig 文件来扩展 monorepo。 阅读更多：TypeScript 教程 什么是 monorepo？ Monorepo 是指将多个相关项目（例如前端和后端）放置在同一个代码仓库中的开发模式。 Aug 14, 2023 · Enable cleaner, more readable import statements with TSConfig path aliases. json` files. It is working, although not as expe How this setting affects your build. json, try to create a single index. Jul 21, 2021 · Unfortunately tsconfig path's are overwritten when extended, instead of the array being extended. There is a larger coverage of paths in the moduleResolution reference page. For example, tsconfig applies deep merge to compilerOptions Aug 3, 2023 · These filenames are resolved relative to the directory containing the tsconfig. Is it possible to have a tsconfig. Sep 10, 2019 · Version: 3. I think you can even define the utils path on the root, that way you won't have to repeat that either. json file. An issue is currently being openly discussed for over a year in the Typescript repository. Jun 3, 2020 · roots (correct is rootDirs) are directories where you have projects / modules / components whereas paths are aliases to projects / modules / components in these roots and they are used to resolve imports. json exclude: ['src/app'] the frontend files Jan 17, 2021 · A tsconfig. json files extend Oct 18, 2022 · Extends configs (configs referenced from "extends") can specify "include" and "exclude", but they are relative to the tsconfig. base. Finally, you should be able extend your tsconfig file from your app with one from your shared tsconfigs package like you've shown in your example. Feb 26, 2025 · 1 As far as I know there currently is no way to extend a tsconfig on property level. extends 的作用是继承另外的一个配置文件，对继承的配置文件进行合并或覆盖。例如：在一个项目中有多个页面，每个页面的 ts 配置文件希望做一些特殊的配置。可以采用上面的 extends 来实现。 在设计 extends 的时候，我们应该进行依赖反转的设计，将依赖关系放到每个页面维度处理，而不是放在 Oct 11, 2019 · Path-based compiler options (outDir, outFile, rootDir, include, files) are resolved from the config file they're found in) You will need to repeat the outDir for every tsconfig. json). May 5, 2020 · ├── index. It seems necessary to integrate the monorepo's tsconfig paths into the nuxt. How can I tell NX to resolve my imports from src/main instead of src? Mar 23, 2022 · I am getting an issue with tsconfig after upgrading the package version. json" adjusting the path if the child config is deeper in the tree. 0, last published: 3 years ago. : { "extends": ". Jun 15, 2021 · The semantics seem quite clear - use the paths in the base config (with resolution relative to that tsconfig file), and merge/overwrite any local ones (relative to the local tsconfig file). json files all extend from the base tsconfig. json are relative to the folder that that specific tsconfig. All relative paths found in the configuration file will be resolved relative to the configuration file Feb 27, 2024 · The problem is the paths in a tsconfig. js style resolution. Mar 24, 2021 · Inside the tsconfig. json file can inherit configurations from another file using the extends property. Next. json that allows developers to have a base tsconfig. . json file that is automatically generated by the Nuxt application, the extends property fails to locate the tsconfig. 3. extendsが絡むと紛らわしいが、常にその記述が書かれた（originated in）ファイルからの相対パスとなる。 All relative paths found in the configuration file will be resolved relative to the configuration file they originated in. Old Answer Use a single tsconfig. So, you'll have to copy/move the paths from the base tsconfig to any derived tsconfig files. Merge-tsconfigs provides a CLI and node functions to merge tsconfigs files and compilerOptions into the single tsconfig file you want at a given time. I have been using this setup for a year now and I have Mar 2, 2024 · Currently, when a package's tsconfig. Nov 17, 2017 · Scenario: As a user, I would like to optionally merge extended arrays in tsconfig files. All relative paths found in the configuration file will be resolved relative to the configuration file they originated in. Below I Feb 17, 2024 · Multiple file paths can be provided for a path mapping. ts in each subdirectory under libs/ui/src/ and re-export everything from there. So extends property should be able to process one or more paths. A workaround for this is to just copy the library paths from tsconfig. This behavior requires developers to replicate the base paths in every package's tsconfig, leading to maintenance overhead and potential for inconsistency. Apr 11, 2023 · It's amazing for supporting workspace, thank you all very much. } Dec 8, 2020 · Something I believe should be more clearly spelled out in the Typescript documentation is how the extends option in the tsconfig. json file located at the root of the monorepo. json Dec 21, 2018 · Search Terms tsconfig extends array Suggestion Support defining the "extends" option as array of filenames. config. json, and the project specific ones in the its own tsconfig. I hope this helps. Start using tsconfig-paths in your project by running `npm i tsconfig-paths`. Using Project References can greatly improve build and editor interaction times, enforce logical separation between components, and organize your code in new and improved ways. js is smart enough to pick up the paths automatically from the tsconfig. Resolving Extended Files Understand how TypeScript resolves the paths in extends. json, but there is nothing on the Nx side to get around this. tsconfig is required so typescript knows where the file can be found for intellisense and automatic imports. Merging would be even more confusing since paths are order dependent and the paths are relative to the baseIRl, and there are two in this case. It's either redeclare and duplicate + extend, or use as is. There are other solutions in the makings though. paths lets you declare how TypeScript should resolve an import in your require / import s. It's more common to see them working with frontend tooling because bundlers more often than not already support TS path aliases. json include: ['src'] to ensure all files get typechecked in the IDE Backend tsconfig. Scenario: As a user, I would like to optionally merge extended arrays in tsconfig files. The child tsconfig. json. The way tsconfig. It only takes a string type which is a path to the tsconfig. ts will be used at compile time to tell the vite compiler where your files are located. json file (which could be deep in node_modules) instead of the root of the directory, per the include docs: These filenames are resolved relative to the directory containing the tsconfig. I discussed this in the previous note. So what you can do is overwrite the include property of your tsconfig with something like this: Feb 5, 2024 · As we know, the forms and approaches to describing configuration files are extremely varied. 2, tsconfig-paths is a community-maintained module that extends the TypeScript compiler to allow path mapping defined in your tsconfig. You can read more about this in the docs and in this issue. json for the root. Nov 15, 2024 · The aliases (shortened paths) need to be set in both the root tsconfig. webpack. I want to be able to run tsc --noEmit and type check all of them. One of this – the extends directive. json file, which should be in the . /tsconfig. Dec 12, 2016 · Currently, I am trying the new extends feature in the tsconfig. json and vite. More about the extends option here: https Path aliases don't just work with plain TS, the compiler expects your build tool to interpret these paths and resolve them accordingly. Load node modules according to tsconfig paths, in run-time or via API. json file inside activation folder Feb 17, 2024 · I am using create-react-app as scaffolding and tsconfig-paths as extension of my tsconfig because create-react-app is removing my paths when ran. It tells the TypeScript compiler how to process your code, which files to include, and which features to enable or disable. Additionally, the base tsconfig's paths setting is not included in this automatically generated tsconfig. The configuration from the base file are loaded first, then overridden by those in the inheriting config file. When a TypeScript compiler processes a tsconfig. ts files. "extends", "merge", "compilerOptions", "paths", "outdir", "include", "exclude", "typeRoots", "tsconfig", "ability to merge tsconfig" Over years users have asked us Why do I want this? Tsconfig files are copied, pasted, or left as out-of-sync widows 😥 throughout projects. json file is in, and not the tsconfig. json file, just remember to restart the Next. Dec 30, 2019 · -1 I don't know if it's the right approach, but I usually prefer to use references instead of extends, like this: tsconfig. Most likely you are using a loader which does not allow remapping, such as Node. There are 2256 other projects in the npm registry using tsconfig-paths. DO NOT name them anything other than tsconfig. json` file and extend it in your project-specific `tsconfig. A well-configured tsconfig. json extends the root tsconfig, any paths defined in the package's tsconfig overwrite those from the base. json file handles overrides. The test & cypress directories are where the conflicts come up. Jan 29, 2024 · But instead of using wildcard paths in tsconfig. odvby lefv gyuome eoocrx ccdpxq lhond tnqdmlokr dsj qtttx mcru munod kvmjl ihapjb dhcv zocxdk