476 lines
19 KiB
Markdown
476 lines
19 KiB
Markdown
# nx.json
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The `nx.json` file configures the Nx CLI and project defaults. The full [machine readable schema](https://github.com/nrwl/nx/blob/master/packages/nx/schemas/nx-schema.json) is available on GitHub.
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The following is an expanded example showing all options. Your `nx.json` will likely be much shorter.
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```json {% fileName="nx.json" %}
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{
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"plugins": [
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{
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"plugin": "@nx/eslint/plugin",
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"options": {
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"targetName": "lint"
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}
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}
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],
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"parallel": 4,
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"cacheDirectory": "tmp/my-nx-cache",
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"defaultBase": "main",
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"namedInputs": {
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"default": ["{projectRoot}/**/*"],
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"production": ["!{projectRoot}/**/*.spec.tsx"]
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},
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"targetDefaults": {
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"build": {
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"inputs": ["production", "^production"],
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"dependsOn": ["^build"],
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"executor": "@nrwl/js:tsc",
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"options": {
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"main": "{projectRoot}/src/index.ts"
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},
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"cache": true
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}
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},
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"release": {
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"version": {
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"generatorOptions": {
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"currentVersionResolver": "git-tag",
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"specifierSource": "conventional-commits"
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}
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},
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"changelog": {
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"git": {
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"commit": true,
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"tag": true
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},
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"workspaceChangelog": {
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"createRelease": "github"
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},
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"projectChangelogs": true
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}
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},
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"generators": {
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"@nx/js:library": {
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"buildable": true
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}
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},
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"extends": "nx/presets/npm.json"
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}
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```
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## Plugins
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Nx plugins improve the experience of using different tools with Nx. One key feature of plugins is that they can [automatically configure the way Nx runs tasks](/concepts/inferred-tasks) for a tool based on that tool's configuration. In order for a plugin to configure tasks for Nx, it needs to be registered in the `plugins` array. If a plugin has no options, it can be listed as a string. Otherwise, it should be listed as an object with a `plugin` property and an `options` property.
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Every plugin behaves differently, so consult the plugin's own documentation for information about what it does. You can browse the [plugin registry](/plugin-registry) for available plugins.
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To learn about creating your own plugin read about [extending Nx](/extending-nx/intro/getting-started).
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```json {% fileName="nx.json" %}
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{
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"plugins": [
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"@my-org/graph-plugin",
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{
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"plugin": "@nx/eslint/plugin",
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"options": {
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"targetName": "lint"
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}
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}
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]
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}
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```
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## Task Options
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The following properties affect the way Nx runs tasks and can be set at the root of `nx.json`.
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| Property | Description |
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| ----------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| parallel | defines the max number of targets run in parallel |
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| captureStderr | defines whether the cache captures stderr or just stdout |
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| skipNxCache | defines whether the Nx Cache should be skipped (defaults to `false`) |
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| cacheDirectory | defines where the local cache is stored (defaults to `.nx/cache`) |
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| encryptionKey | (when using `"nx-cloud"` only) defines an encryption key to support end-to-end encryption of your cloud cache. You may also provide an environment variable with the key `NX_CLOUD_ENCRYPTION_KEY` that contains an encryption key as its value. The Nx Cloud task runner normalizes the key length, so any length of key is acceptable |
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| selectivelyHashTsConfig | only hash the path mapping of the active project in the `tsconfig.base.json` (e.g., adding/removing projects doesn't affect the hash of existing projects) (defaults to `false`) |
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You can configure `parallel` in `nx.json`, but you can also set a `--parallel` flag in the terminal `nx run-many -t test --parallel=5`.
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### Multiple Tasks Runners
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Tasks runners are invoked when you run `nx test`, `nx build`, `nx run-many`, `nx affected`, and so on.
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There is a tasks runner created from the task options defined at the root of `nx.json` named `default`. You can register another tasks runner by adding it to `nx.json` like this:
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```json {% fileName="nx.json" %}
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{
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"tasksRunnerOptions": {
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"another": {
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"runner": "nx/tasks-runners/default",
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"options": {}
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}
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}
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}
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```
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Then you can run a task with the new runner using the `--runner` flag:
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```shell
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nx run-many -t build --runner=another
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```
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The official types of `runner` supported by Nx are `"nx/tasks-runners/default"` and `"nx-cloud"`.
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## Default Base
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Tells Nx which base branch to use when calculating affected projects.
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- `defaultBase` defines the default base branch, defaults to `main`.
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## Target Defaults
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Target defaults provide ways to set common options for a particular target in your workspace. When building your project's configuration, we merge it with up to 1 default from this map. For a given target, we look at its name and its executor. We then check target defaults for any of the following combinations:
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- `` `${executor}` ``
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- `` `${targetName}` ``
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Whichever of these we find first, we use as the base for that target's configuration. Some common scenarios for this follow.
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### inputs & namedInputs
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Named inputs defined in `nx.json` are merged with the named inputs defined in [project level configuration](/reference/project-configuration). In other words, every project has a set of named inputs, and it's defined as: `{...namedInputsFromNxJson, ...namedInputsFromProjectsProjectJson}`.
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Defining `inputs` for a given target would replace the set of inputs for that target name defined in `nx.json`.
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Using pseudocode `inputs = projectJson.targets.build.inputs || nxJson.targetDefaults.build.inputs`.
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You can also define and redefine named inputs. This enables one key use case, where your `nx.json` can define things like this (which applies to every project):
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```
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"test": {
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"inputs": [
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"default",
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"^production"
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]
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}
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```
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And projects can define their `production` inputs, without having to redefine the inputs for the `test` target.
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```json {% fileName="project.json" %}
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{
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"namedInputs": {
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"production": ["default", "!{projectRoot}/**/*.test.js"]
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}
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}
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```
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In this case Nx will use the right `production` input for each project.
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{% cards %}
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{% card title="Inputs and Named Inputs Reference" type="documentation" description="Learn about all the possible settings for `inputs` and `namedInputs`" url="/reference/inputs" /%}
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{% card title="Configure Inputs for Task Caching" type="documentation" description="This recipes walks you through a few examples of how to configure `inputs` and `namedInputs`" url="/recipes/running-tasks/configure-inputs" /%}
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{% /cards %}
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### Task Pipelines
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Targets can depend on other targets. A common scenario is having to build dependencies of a project first before
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building the project. The `dependsOn` property in `project.json` can be used to define the list of dependencies of an
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individual target.
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Often the same `dependsOn` configuration has to be defined for every project in the repo, and that's when
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defining `targetDefaults` in `nx.json` is helpful.
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```json {% fileName="nx.json" %}
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{
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"targetDefaults": {
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"build": {
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"dependsOn": ["^build"]
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}
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}
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}
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```
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The configuration above is identical to adding `{"dependsOn": ["^build"]}` to every build target of every project.
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{% cards %}
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{% card title="Project Configuration reference" type="documentation" description="For full documentation of the `dependsOn` property, see the project configuration reference" url="/reference/project-configuration#dependson" /%}
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{% card title="What is a Task Pipeline" type="documentation" description="This guide describes how to think about task pipelines" url="/concepts/task-pipeline-configuration" /%}
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{% /cards %}
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### Outputs
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Another target default you can configure is `outputs`:
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```json {% fileName="nx.json" %}
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{
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"targetDefaults": {
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"build": {
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"outputs": ["{projectRoot}/custom-dist"]
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}
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}
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}
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```
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When defining any options or configurations inside of a target default, you may use the `{workspaceRoot}` and `{projectRoot}` tokens. This is useful for defining things like the outputPath or tsconfig for many build targets.
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```json {% fileName="nx.json" %}
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{
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"targetDefaults": {
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"@nx/js:tsc": {
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"options": {
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"main": "{projectRoot}/src/index.ts"
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},
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"configurations": {
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"prod": {
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"tsconfig": "{projectRoot}/tsconfig.prod.json"
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}
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},
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"inputs": ["prod"],
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"outputs": ["{workspaceRoot}/{projectRoot}"]
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},
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"build": {
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"inputs": ["prod"],
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"outputs": ["{workspaceRoot}/{projectRoot}"],
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"cache": true
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}
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}
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}
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```
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{% callout type="note" title="Target Default Priority" %}
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Note that the inputs and outputs are respecified on the @nx/js:tsc default configuration. This is **required**, as when reading target defaults Nx will only ever look at one key. If there is a default configuration based on the executor used, it will be read first. If not, Nx will fall back to looking at the configuration based on target name. For instance, running `nx build project` will read the options from `targetDefaults[@nx/js:tsc]` if the target configuration for build uses the @nx/js:tsc executor. It **would not** read any of the configuration from the `build` target default configuration unless the executor does not match.
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{% /callout %}
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{% cards %}
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{% card title="Configure Outputs for Task Caching" type="documentation" description="This recipe walks you through how to set outputs" url="/recipes/running-tasks/configure-outputs" /%}
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{% /cards %}
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### Cache
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In Nx 17 and higher, caching is configured by specifying `"cache": true` in a target's configuration. This will tell Nx that it's ok to cache the results of a given target. For instance, if you have a target that runs tests, you can specify `"cache": true` in the target default configuration for `test` and Nx will cache the results of running tests.
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```json {% fileName="nx.json" %}
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{
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"targetDefaults": {
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"test": {
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"cache": true
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}
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}
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}
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```
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{% callout type="warning" title="Per Project Caching + Distribution" %}
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If you are using distributed task execution and disable caching for a given target, you will not be able to use distributed task execution for that target. This is because distributed task execution requires caching to be enabled. This means that the target you have disabled caching for, and any targets which depend on that target will fail the pipeline if you try to run them with Nx Agents enabled.
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{% /callout %}
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## Release
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The `release` property in `nx.json` configures the `nx release` command. It is an optional property, as `nx release` is capable of working with zero config, but when present it is used to configure the versioning, changelog, and publishing phases of the release process.
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For more information on how `nx release` works, see [manage releases](/features/manage-releases).
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The full list of configuration options available for `"release"` can be found here: [https://github.com/nrwl/nx/blob/master/packages/nx/src/config/nx-json.ts](https://github.com/nrwl/nx/blob/master/packages/nx/src/config/nx-json.ts) under `NxReleaseConfiguration`.
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### Projects
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If you want to limit the projects that `nx release` targets, you can use the `projects` property in `nx.json` to do so. This property is either a string, or an array of strings. The strings can be project names, glob patterns, directories, tag references or anything else that is supported by the `--projects` filter you may know from other commands such as `nx run`.
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```jsonc {% fileName="nx.json" %}
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{
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"release": {
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// Here we are configuring nx release to target all projects
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// except the one called "ignore-me"
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"projects": ["*", "!ignore-me"]
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}
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}
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```
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### Projects Relationship
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The `projectsRelationship` property tells Nx whether to release projects independently or together. By default Nx will release all your projects together in lock step, which is an equivalent of `"projectRelationships": "fixed"`. If you want to release projects independently, you can set `"projectsRelationship": "independent"`.
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```jsonc {% fileName="nx.json" %}
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{
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"release": {
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// Here we are configuring nx release to release projects
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// independently, as opposed to the default of "fixed"
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"projectsRelationship": "independent"
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}
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}
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```
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### Release Tag Pattern
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Optionally override the git/release tag pattern to use. This field is the source of truth for changelog generation and release tagging, as well as for conventional commits parsing.
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It supports interpolating the version as `{version}` and (if releasing independently or forcing project level version control system releases) the project name as `{projectName}` within the string.
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The default `"releaseTagPattern"` for fixed/unified releases is: `v{version}`
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The default `"releaseTagPattern"` for independent releases at the project level is: `{projectName}@{version}`
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```jsonc {% fileName="nx.json" %}
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{
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"release": {
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// Here we are configuring nx release to use a custom release
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// tag pattern (we have dropped the v prefix from the default)
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"releaseTagPattern": "{version}"
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}
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}
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```
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### Version
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The `version` property configures the versioning phase of the release process. It is used to determine the next version of your projects, and update any projects that depend on them to use the new version.
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Behind the scenes, the `version` logic is powered by an Nx generator. Out of the box Nx wires up the most widely applicable generator implementation for you, which is `@nx/js:release-version` provided by the `@nx/js` plugin.
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It is therefore a common requirement to be able to tweak the options given to that generator. This can be done by configuring the `release.version.generatorOptions` property in `nx.json`:
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```jsonc {% fileName="nx.json" %}
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{
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"release": {
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"version": {
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"generatorOptions": {
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// Here we are configuring the generator to use git tags as the
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// source of truth for a project's current version
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"currentVersionResolver": "git-tag",
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// Here we are configuring the generator to use conventional
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// commits as the source of truth for how to determine the
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// relevant version bump for the next version
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"specifierSource": "conventional-commits"
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}
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}
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}
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}
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```
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For a full reference of the available options for the `@nx/js:release-version` generator, see the [release version generator reference](/nx-api/js/generators/release-version).
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### Changelog
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The `changelog` property configures the changelog phase of the release process. It is used to generate a changelog for your projects, and commit it to your repository.
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There are two types of possible changelog that can be generated:
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- **Workspace Changelog**: A changelog that contains all changes across all projects in your workspace. This is not applicable when releasing projects independently.
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- **Project Changelogs**: A changelog that contains all changes for a given project.
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The `changelog` property is used to configure both of these changelogs.
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#### Workspace Changelog
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The `changelog.workspaceChangelog` property configures the workspace changelog. It is used to determine if and how the workspace changelog is generated.
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```jsonc {% fileName="nx.json" %}
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{
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"release": {
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"changelog": {
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// This disables the workspace changelog
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"workspaceChangelog": false
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}
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}
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}
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```
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```jsonc {% fileName="nx.json" %}
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{
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"release": {
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"changelog": {
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"workspaceChangelog": {
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// This will create a GitHub release containing the workspace
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// changelog contents
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"createRelease": "github",
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// This will disable creating a workspace CHANGELOG.md file
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"file": false
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}
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}
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}
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}
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```
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#### Project Changelogs
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The `changelog.projectChangelogs` property configures the project changelogs. It is used to determine if and how the project changelogs are generated.
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```jsonc {% fileName="nx.json" %}
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{
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"release": {
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"changelog": {
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// This enables project changelogs with the default options
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"projectChangelogs": true
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}
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}
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}
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```
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```jsonc {% fileName="nx.json" %}
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{
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"release": {
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"changelog": {
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"projectChangelogs": {
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// This will create one GitHub release per project containing
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// the project changelog contents
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"createRelease": "github",
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// This will disable creating any project level CHANGELOG.md
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// files
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"file": false
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}
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}
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}
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}
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```
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### Git
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The `git` property configures the automated git operations that take place as part of the release process.
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```jsonc {% fileName="nx.json" %}
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{
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"release": {
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"git": {
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// This will enable committing any changes (e.g. package.json
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// updates, CHANGELOG.md files) to git
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"commit": true,
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// This will enable create a git for the overall release, or
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// one tag per project for independent project releases
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"tag": false
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}
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}
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}
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```
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## Generators
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Default generator options can be configured in `nx.json`. For instance, the following tells Nx to always
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pass `--buildable=true` when creating new libraries with the `@nx/js` plugin.
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```json {% fileName="nx.json" %}
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{
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"generators": {
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"@nx/js:library": {
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"buildable": true
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}
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}
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}
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```
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## Extends
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Some presets use the `extends` property to hide some default options in a separate json file. The json file specified in the `extends` property is located in your `node_modules` folder. The Nx preset files are specified in [the `nx` package](https://github.com/nrwl/nx/tree/master/packages/nx/presets).
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## Nx Cloud
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There are also options for [Nx Cloud](https://nx.app) that are set in the `nx.json` file. For instance, you authenticate with the Nx Cloud service using an `nxCloudAccessToken` like this:
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```json {% fileName="nx.json" %}
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{
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"nxCloudAccessToken": "SOMETOKEN"
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}
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```
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For more details on configuring Nx Cloud, see the [Nx Cloud Configuration Options page](/ci/reference/config).
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