@sketchmine/sketch-validator-nodejs-wrapper

The Node.js wrapper for the validation is a CLI tool that wraps the @sketchmine/sketch-validator in a command line tool where a file can be provided that should be validated. Currently in use for our CI environment.

• @sketchmine/sketch-validator-nodejs-wrapper
  • Dependency graph
  • The CLI
    • CLI options
    • importing in your code
    • environments
  • Building the package
    • Prerequisites
    • how to build
  • Linting
  • Testing the package

Dependency graph

The CLI

The package can be consumed in two ways, First of all it can be executed via the CLI (command line interface). You have to install the package with yarn or npm from @sketchmine/sketch-validator-nodejs-wrapper and then you can go ahead with npx skm-sketch-validation --file /path/to/file.sketch Therefore you have to provide at least one option:

CLI options

flag	description
--file	the file to validate (required)
-h	displays the help page
-c, --config	the path to the sketchlint.json that defines which rules should be used

If no config flag is provided the default sketchlint.json will be taken. The default sketchlint file has following configuration inside:

{
  "version": "2.4.0",
  "rules": {
    "artboard-validation": true,
    "color-palette-validation":  true,
    "page-validation": true,
    "symbol-name-validation": true,
    "text-validation": true
  }
}

The version property is used to specify the docker image (it is the version of the validation package @sketchmine/sketch-validator. It can be locked to a fix version like 2.1.0 or simply latest. Furthermore you can define if a rule should only warn or if it should break your CI with an exit code 1.

importing in your code

The second option is to import it regular in your code base and you can provide it with the options from your script.

environments

Our rules are defined for different environments. So at Dynatrace we have global rules that are responsible for the library files and on the other hand we provide rules for specific product screens.

The default validation environment is global (see all environments below). You can change it by adding the process environment variable ENVIRONMENT=<env-name> or passing an environment with the command-line args to the command above. Enable the debug mode by adding DEBUG=true.

Building the package

Prerequisites

To go ahead with building, developing you need to perform a yarn install to install all necessary dependencies. After this step you can go ahead with the further steps.

how to build

To build the package Rollup.js is used as a module bundler. The configuration can be found in the rollup.config.js file and is orchestrated by the yarn package manager. The package bundle is formatted commonjs and is meant to be consumed only by node.js applications.

The build can be started with the following two commands:

• yarn build for building the package.
• yarn dev for building and watching the sources of the package (rebuilds after save).

Linting

The source code of this package is going to be linted by our CI environment. To ensure a coding standard and quality use the configured linter tslint. This package extends from the tslint-config-airbnb and the linting configuration extends from the root tslint.json.

Run yarn lint to execute the linter.

Testing the package

To ensure that the sketch-validator-nodejs-wrapper is working, write tests and put them in proper named file.

Important!

All tests according to this package should be wrapped in a describe with the prefix: [sketch-validator-nodejs-wrapper] › ... like the following:

// import statements

describe('[sketch-validator-nodejs-wrapper] › ${folder} › ${description of the suite}', () => {
  // your tests should be placed here
});

For tests the jest Framework was chosen, see jestjs.io for details.

Run yarn test to execute all tests specified for the sketch-validator-nodejs-wrapper. Run yarn test -f filename.test to execute only tests that match the provided RegExp for the filename.