@inward/build v5.5.0

@inward/build

This module contains a set of common scripts and default configurations to build LoopBack 4 or other TypeScript modules, including:

• ib-tsc: Use tsc to compile typescript files
• ib-eslint: Run eslint
• ib-prettier: Run prettier
• ib-mocha: Run mocha to execute test cases
• ib-nyc: Run nyc

These scripts first try to locate the CLI from target project dependencies and fall back to bundled ones in @inward/build.

Basic use

To use @inward/build for your package:

1. Run the following command to add @inward/build as a dev dependency.

npm i @inward/build --save-dev

2. Configure your project package.json as follows:

"scripts": {
    "build": "ib-tsc",
    "build:watch": "ib-tsc --watch",
    "clean": "ib-clean",
    "lint": "npm run prettier:check && npm run eslint",
    "lint:fix": "npm run prettier:fix && npm run eslint:fix",
    "prettier:cli": "ib-prettier \"**/*.ts\" \"**/*.js\"",
    "prettier:check": "npm run prettier:cli -- -l",
    "prettier:fix": "npm run prettier:cli -- --write",
    "eslint": "ib-eslint --report-unused-disable-directives .",
    "eslint:fix": "npm run eslint -- --fix",
    "pretest": "npm run clean && npm run build",
    "test": "ib-mocha \"dist/__tests__\"",
    "posttest": "npm run lint",
    "start": "npm run build && node .",
    "prepublishOnly": "npm run test"
  },

Please remember to replace your-module-name with the name of your module.

Now you run the scripts, such as:

• npm run build - Compile TypeScript files and copy resources (non .ts files) to outDir
• npm test - Run all mocha tests
• npm run lint - Run eslint and prettier on source files

3. Override default configurations in your project

• ib-tsc

  By default, ib-tsc searches your project's root directory for tsconfig.build.json then tsconfig.json. If neither of them exists, a tsconfig.json will be created to extend from @inward/build/config/tsconfig.common.json.

  To customize the configuration:

  • Create tsconfig.build.json or tsconfig.json in your project's root directory

    {
      "$schema": "http://json.schemastore.org/tsconfig",
      "extends": "@inward/build/config/tsconfig.common.json",
      "compilerOptions": {
        "outDir": "dist",
        "rootDir": "src"
      },
      "include": ["src"]
    }

  • Set options explicity for the script

    ib-tsc -p tsconfig.json --target es2017 --outDir dist

    For more information, see https://www.typescriptlang.org/docs/handbook/compiler-options.html.

  • The following un-official compiler options are available:

    Option	Description
    --copy-resources	Copy all non-typescript files from src and test to outDir, preserving their relative paths.

4. Run builds

npm run build

5. Run code coverage reports

• ib-nyc

  ib-nyc is a simple wrapper for nyc.

  To customize the configuration:

  • Create .nycrc in your project's root directory

    {
      "include": ["dist"],
      "exclude": ["dist/__tests__/"],
      "extension": [".js", ".ts"],
      "reporter": ["text", "html"],
      "exclude-after-remap": false
    }

  • Update your package.json scripts:

    "precoverage": "npm test",
    "coverage": "open coverage/index.html",
    "coverage:ci": "ib-nyc report --reporter=text-lcov | coveralls",
    "test": "ib-nyc npm run mocha",
    "test:ci": "ib-nyc npm run mocha"

    converage:ci sets up integration with Coveralls.

A note on console logs printed by tests

We consider (console) logging from tests as a bad practice, because such logs usually clutter the test output and make it difficult to distinguish legitimate error messages from the noise.

By default, ib-mocha detects when the tests and/or the application tested have printed console logs and fails the test run with the following message:

=== ATTENTION - INVALID USAGE OF CONSOLE LOGS DETECTED ===

If you need more information about behavior in the test, then the first choice should be to use a better or more descriptive error assertion. If that's not possible, then use debug statements to print additional information when explicitly requested.

A typical situation is that a test is sending an HTTP request and the server responds with an error code as expected. However, because the server is configured to log failed requests, it will print a log also for requests where the failure was expected and intentional. The solution is to configure your REST server to suppress error messages for that specific error code only. Our @inward/testlab module is providing a helper createUnexpectedHttpErrorLogger that makes this task super easy.

Alternatively, it's also possible to disable detection of console logs by calling ib-mocha with --allow-console-logs argument.

Contributions

• Guidelines
• Join the team

Tests

run npm test from the root folder.

Contributors

See all contributors.

License

MIT