resource-readme.md

Rollup

https://rollupjs.org/guide/en/

API

• output.format: link and search output.format

• output.globals: link and search output.globals. Required for umd/iief formats.

• output.exports: link and search output.exports

Plugins

• Typescript: (rollup-plugin-typescript2)[https://github.com/ezolenko/rollup-plugin-typescript2]. We could use with rollup-plugin-babel, rollup-plugin-commonjs and rollup-plugin-node-resolve.

It's IMPORTANT the order when we use it plugins: [

resolve(), commonjs(), typescript(), babel(), ]

• Babel: (rollup-plugin-babel)[https://github.com/rollup/rollup-plugin-babel]

• Commonjs: (rollup-plugin-commonjs)[https://github.com/rollup/rollup-plugin-commonjs]

• Node resolve: (rollup-plugin-node-resolve)[https://github.com/rollup/rollup-plugin-node-resolve]

ESLINT

Posts:

• https://dev.to/robertcoopercode/using-eslint-and-prettier-in-a-typescript-project-53jb

• https://dev.to/benweiser/how-to-set-up-eslint-typescript-prettier-with-create-react-app-3675

• Core libraries:

npm i eslint @typescript-eslint/parser @typescript-eslint/eslint-plugin -D

• Config file:

.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser', // Specifies the ESLint parser
  extends: [
    'plugin:@typescript-eslint/recommended', // Uses the recommended rules from the @typescript-eslint/eslint-plugin
  ],
  plugins: ['@typescript-eslint'],
  rules: {
    // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
    // e.g. "@typescript-eslint/explicit-function-return-type": "off",
  },
};

• With react:

npm i eslint-plugin-react -D

• Config file:

.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser', // Specifies the ESLint parser
  extends: [
    'plugin:react/recommended', // Uses the recommended rules from @eslint-plugin-react
    'plugin:@typescript-eslint/recommended', // Uses the recommended rules from @typescript-eslint/eslint-plugin
  ],
  parserOptions: {
    ecmaVersion: 2018, // Allows for the parsing of modern ECMAScript features
    sourceType: 'module', // Allows for the use of imports
    ecmaFeatures: {
      jsx: true, // Allows for the parsing of JSX
    },
  },
  rules: {
    // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
    // e.g. "@typescript-eslint/explicit-function-return-type": "off",
  },
  settings: {
    react: {
      version: 'detect', // Tells eslint-plugin-react to automatically detect the version of React to use
    },
  },
};

• With prettier:

npm i prettier eslint-config-prettier eslint-plugin-prettier -D

• Config file:

.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser', // Specifies the ESLint parser
  extends: [
    'plugin:@typescript-eslint/recommended', // Uses the recommended rules from the @typescript-eslint/eslint-plugin
    'prettier/@typescript-eslint', // Uses eslint-config-prettier to disable ESLint rules from @typescript-eslint/eslint-plugin that would conflict with prettier
    'plugin:prettier/recommended', // Enables eslint-plugin-prettier and displays prettier errors as ESLint errors. Make sure this is always the last configuration in the extends array.
  ],
  plugins: ['@typescript-eslint', 'prettier'],
};

• To ignore folder and files: .eslintignore

• Run eslint:

package.json

...
  "scripts": {
    "lint": "eslint './src/**/*.{ts,tsx}'",
  },