146 lines
5.4 KiB
Markdown
146 lines
5.4 KiB
Markdown
# Node Tutorial - Part 3: Task-Running
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Common tasks include:
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- Building an application
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- Serving an application locally for development purposes
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- Running your unit tests
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- Linting your code
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When you ran your generators in Part 1, you already set up these more common tasks for each project.
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## Defining Targets
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Here's the `project.json` file for your `products-data-client` project:
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```json {% fileName="libs/products-data-client/project.json" %}
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{
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"name": "products-data-client",
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"$schema": "../../node_modules/nx/schemas/project-schema.json",
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"sourceRoot": "libs/products-data-client/src",
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"projectType": "library",
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"targets": {
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"build": {
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"executor": "@nrwl/js:tsc",
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"outputs": ["{options.outputPath}"],
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"options": {
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"outputPath": "dist/libs/products-data-client",
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"main": "libs/products-data-client/src/index.ts",
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"tsConfig": "libs/products-data-client/tsconfig.lib.json",
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"assets": ["libs/products-data-client/*.md"]
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}
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},
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"lint": {
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"executor": "@nrwl/linter:eslint",
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"outputs": ["{options.outputFile}"],
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"options": {
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"lintFilePatterns": ["libs/products-data-client/**/*.ts"]
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}
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},
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"test": {
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"executor": "@nrwl/jest:jest",
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"outputs": ["{workspaceRoot}/coverage/libs/products-data-client"],
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"options": {
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"jestConfig": "libs/products-data-client/jest.config.ts",
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"passWithNoTests": true
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}
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}
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},
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"tags": []
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}
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```
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You can see that three targets are defined here: `build`, `lint` and `test`.
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The properties inside each of these these targets is defined as follows:
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- `executor` - which Nx executor to run. The syntax here is: `<plugin name>:<executor name>`
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- `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 - Workspace Optimizations](/node-tutorial/4-workspace-optimization)).
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- `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.
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## Running Tasks
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Run the `build` target for your `products-data-client` project:
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```{% command="npx nx build products-data-client" path="~/my-products" %}
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> nx run products-data-client:build
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Compiling TypeScript files for project "products-data-client"...
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Done compiling TypeScript files for project "products-data-client".
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———————————————————————————————————————————————————————————————————————————————————————————————
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> NX Successfully ran target build for project products-data-client (780ms)
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```
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You can now find your built `products-data-client` distributable in your `dist/libs/products-data-client` directory, as specified in the `outputPath` property of the `build` target options in your `project.json` file.
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Next, run a lint check on `products-data-client`:
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```{% command="npx nx lint products-data-client" path="~/my-products" %}
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> nx run products-data-client:lint
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Linting "products-data-client"...
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All files pass linting.
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———————————————————————————————————————————————————————————————————————————————————————————————
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> NX Successfully ran target lint for project products-data-client (777ms)
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```
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Next, add some tests to your data client in the `products-data-client.spec.ts` file:
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```typescript {% fileName="libs/products-data-client/src/lib/products-data-client.spec.ts" %}
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import {
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createProductsDataClient,
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exampleProducts,
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} from './products-data-client';
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describe('productsDataClient', () => {
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it('should get all example products', async () => {
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const productsDataClient = createProductsDataClient();
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const products = await productsDataClient.getProducts();
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expect(products).toEqual(Object.values(exampleProducts));
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});
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it('should get example product by id', async () => {
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const productsDataClient = createProductsDataClient();
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const product = await productsDataClient.getProductById('1');
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expect(product).toEqual(exampleProducts['1']);
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});
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});
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```
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And then run your `test` target:
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```{% command="npx nx test products-data-client" path="~/my-products" %}
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> nx run products-data-client:test
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PASS products-data-client libs/products-data-client/src/lib/products-data-client.spec.ts
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productsDataClient
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✓ should get all example products (1 ms)
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✓ should get example product by id
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Test Suites: 1 passed, 1 total
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Tests: 2 passed, 2 total
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Snapshots: 0 total
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Time: 0.843 s
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Ran all test suites.
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———————————————————————————————————————————————————————————————————————————————————————————————
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> NX Successfully ran target test for project products-data-client (2s)
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```
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## What's Next
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- Continue to [4: Workspace Optimization](/node-tutorial/4-workspace-optimization)
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