React Standalone Tutorial - 3: Task-Running

Common tasks include:

  • Building an application
  • Serving a local web server with the built project
  • Running your unit tests
  • Linting your code
  • Running e2e tests

When you ran your generators in Part 1, you already set up these common tasks for each project.

Defining Targets

Here's the project.json file for your shared-ui project:

libs/common-ui/project.json
{ "name": "shared-ui", "$schema": "../../node_modules/nx/schemas/project-schema.json", "sourceRoot": "shared/ui/src", "projectType": "library", "tags": [], "targets": { "build": { "executor": "@nrwl/vite:build", "outputs": ["{options.outputPath}"], "options": { "outputPath": "dist/shared/ui" } }, "lint": { "executor": "@nrwl/linter:eslint", "outputs": ["{options.outputFile}"], "options": { "lintFilePatterns": ["shared/ui/**/*.{ts,tsx,js,jsx}"] } }, "test": { "executor": "@nrwl/vite:test", "outputs": ["{projectRoot}/coverage"], "options": { "passWithNoTests": true } } } }

You can see that three targets are defined here: build, test and lint.

The properties inside each of these these targets is defined as follows:

  • executor - which Nx executor to run. The syntax here is: <plugin name>:<executor name>
  • outputs - this is an array of files that would be created by running this target. (This informs Nx on what to save for it's caching mechanisms you'll learn about in 4 - Task Pipelines).
  • options - this is an object defining which executor options to use for the given target. Every Nx executor allows for options as a way to parameterize it's functionality.

Running Tasks

Syntax for Running Tasks in Nx

Run the test target for your shared-ui project:

Terminal

~/store❯

npx nx test shared-ui

> nx run shared-ui:test RUN v0.25.3 /Users/isaac/Documents/code/store/shared/ui ✓ src/lib/banner/banner.spec.tsx (1 test) 12ms ✓ src/lib/shared-ui.spec.tsx (1 test) 10ms Test Files 2 passed (2) Tests 2 passed (2) Start at 15:00:09 Duration 1.05s (transform 375ms, setup 1ms, collect 415ms, tests 22ms) ———————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————— > NX Successfully ran target test for project shared-ui (2s)

Next, run a lint check on your shared-ui project:

Terminal

~/store❯

npx nx lint shared-ui

> nx run shared-ui:lint Linting "shared-ui"... All files pass linting. ——————————————————————————————————————————————————————————————————————————————————————————————————— > NX Successfully ran target lint for project shared-ui (2s)

What's Next