leanûp (v1.1)

Configuration

The @leanup stack contains coordinated and preconfigured tools for developing, building, formatting, linting and testing Single-Web-Applications.

General

Extends configurations

The @leanup stack provides minimal default configurations for all included tools. And it enables the configuration files to be adapted or expanded to suit the specifics of the project.

For example, add an additional webpack plugin: Copy Webpack Plugin

TypeScript

The hole stack is focused on TypeScript with the following tsconfig.json:

{
  "compilerOptions": {
    "experimentalDecorators": true,
    "pretty": true,
    "target": "esnext",
    "module": "esnext",
    "preserveConstEnums": true,
    "sourceMap": true,
    "moduleResolution": "node",
    "lib": ["es2017", "dom"],
    "types": ["mocha", "node"],
    "typeRoots": ["node_modules/@types", "src/types"],
    "noUnusedLocals": true,
    "resolveJsonModule": true,
    "noEmit": true,
    "skipLibCheck": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "forceConsistentCasingInFileNames": true,
    "importHelpers": true,
    "removeComments": true,
    "strict": true
  },
  "include": ["src/**/*", "tests/**/*", "node_modules/@leanup/**/*"],
  "exclude": ["node_modules/@leanup/**/template/**/*"]
}
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Bundler

The main legacy bundler is webpack. In addition to webpack, we have expanded the @leanup stack to include the alternatives vite and snowpack.

List:

Transpiler

The main transpiler is esbuild. In addition to esbuild, we have provide a babel transpiler package for the @leanup stack. It is needed by AngularJS and Inferno.

List:

At work

Develop

To develop an application, there must be an entry file main.ts in the src directory.

For example, if you develop a React application the content of the main.ts looks like:

import 'react.tsx';
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Build

The main legacy bundler is webpack. In addition to webpack, we have expanded the @leanup stack to include the alternatives vite and snowpack.

List:

  • Snowpack
  • Vite
  • Webpack

Format

We chose prettier for the code formatting with the following configuration:

module.exports = {
  printWidth: 120,
  singleQuote: true,
};
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Lint

We chose primary eslint for the static code checking. In addition to eslint, we provide a tsc command.

ESLint

/**
 * https://www.npmjs.com/package/eslint
 */
module.exports = {
  root: false,
  env: {
    browser: true,
    es6: true,
    node: true,
  },
  extends: ['eslint:recommended'],
  overrides: [
    /**
     * - https://www.npmjs.com/package/@typescript-eslint/eslint-plugin
     * - https://www.npmjs.com/package/@typescript-eslint/parser
     */
    {
      extends: [
        'plugin:@typescript-eslint/recommended',
        'plugin:@typescript-eslint/recommended-requiring-type-checking',
      ],
      files: ['**/*.ts', '**/*.tsx'],
      parserOptions: {
        ecmaVersion: 2018,
        project: './tsconfig.json',
        extraFileExtensions: ['.vue'],
        sourceType: 'module',
      },
      plugins: ['@typescript-eslint'],
      rules: {
        '@typescript-eslint/ban-types': 'off',
        '@typescript-eslint/explicit-function-return-type': 'off',
        '@typescript-eslint/no-empty-function': 'off',
        '@typescript-eslint/no-explicit-any': 'off',
        '@typescript-eslint/no-unused-vars': 'off',
        '@typescript-eslint/no-var-requires': 'off',
        '@typescript-eslint/explicit-member-accessibility': ['warn'],
      },
    },
    /**
     * - https://www.npmjs.com/package/eslint-plugin-html
     */
    {
      files: ['**/*.html'],
      plugins: ['html'],
    },
    /**
     * - https://www.npmjs.com/package/eslint-plugin-json
     */
    {
      extends: ['plugin:json/recommended'],
      files: ['**/*.json'],
      plugins: ['json'],
    },
    {
      env: {
        mocha: true,
      },
      files: ['tests/**/*', '**/*.spec.*', '**/*.test.*'],
    },
  ],
  parser: '@typescript-eslint/parser',
  rules: {
    'no-empty': 'off',
    'no-prototype-builtins': 'off',
    'space-before-function-paren': 'off',
  },
};
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TSC

If you want you can execute a addition test with tsc -p tsconfig.json.

Test

Our test strategy focuses on unit- and e2e-testing.

Unit-Test

The unit test framework is moche in addition with chai and sinon.

E2E-Test

The unit test framework is nightwatch.js in addition with cucumber.

Last Updated: