Nx Run Tasks

1---2name: nx-run-tasks3description: Helps with running tasks in an Nx workspace. USE WHEN the user wants to execute build, test, lint, serve, or run any other tasks defined in the workspace.4---5 6You can run tasks with Nx in the following way.7 8Keep in mind that you might have to prefix things with npx/pnpx/yarn if the user doesn't have nx installed globally. Look at the package.json or lockfile to determine which package manager is in use.9 10For more details on any command, run it with `--help` (e.g. `nx run-many --help`, `nx affected --help`).11 12## Understand which tasks can be run13 14You can check those via `nx show project <projectname> --json`, for example `nx show project myapp --json`. It contains a `targets` section which has information about targets that can be run. You can also just look at the `package.json` scripts or `project.json` targets, but you might miss out on inferred tasks by Nx plugins.15 16## Run a single task17 18```19nx run <project>:<task>20```21 22where `project` is the project name defined in `package.json` or `project.json` (if present).23 24## Run multiple tasks25 26```27nx run-many -t build test lint typecheck28```29 30You can pass a `-p` flag to filter to specific projects, otherwise it runs on all projects. You can also use `--exclude` to exclude projects, and `--parallel` to control the number of parallel processes (default is 3).31 32Examples:33 34- `nx run-many -t test -p proj1 proj2` — test specific projects35- `nx run-many -t test --projects=*-app --exclude=excluded-app` — test projects matching a pattern36- `nx run-many -t test --projects=tag:api-*` — test projects by tag37 38## Run tasks for affected projects39 40Use `nx affected` to only run tasks on projects that have been changed and projects that depend on changed projects. This is especially useful in CI and for large workspaces.41 42```43nx affected -t build test lint44```45 46By default it compares against the base branch. You can customize this:47 48- `nx affected -t test --base=main --head=HEAD` — compare against a specific base and head49- `nx affected -t test --files=libs/mylib/src/index.ts` — specify changed files directly50 51## Useful flags52 53These flags work with `run`, `run-many`, and `affected`:54 55- `--skipNxCache` — rerun tasks even when results are cached56- `--verbose` — print additional information such as stack traces57- `--nxBail` — stop execution after the first failed task58- `--configuration=<name>` — use a specific configuration (e.g. `production`)