How to use @spotify/web-scripts-utils - 4 common examples

import { join } from 'path';
import { getConsumingRoot } from '@spotify/web-scripts-utils';

// The ROOT folder of the consuming package, aka where the user is using this
// package from.
export const CONSUMING_ROOT = getConsumingRoot();

// This tool's ROOT folder.
export const THIS_ROOT = join(__dirname, '..');

export const CONFIG_FOLDER = join(THIS_ROOT, 'config');
export const ESLINT_CONFIG = join(CONFIG_FOLDER, 'eslintrc.js');
export const PRETTIER_CONFIG = join(CONFIG_FOLDER, 'prettier.config.js');
export const TSCONFIG = join(CONFIG_FOLDER, 'tsconfig.json');
export const JEST_CONFIG = join(CONFIG_FOLDER, 'jest.config.js');
export const COMMITLINT_CONIFG = join(CONFIG_FOLDER, 'commitlint.config.js');
export const LINT_STAGED_CONFIG = join(CONFIG_FOLDER, 'lint-staged.config.js');

export function getEslintConfig(): string | null {
  if (
    !hasConfig([
      { type: 'file', pattern: '.eslintrc.*' },
      { type: 'package.json', property: 'eslintConfig' },
    ])
  ) {
    return ESLINT_CONFIG;
  }

  return null;
}

export function getPrettierConfig(): string | null {
  if (
    !hasConfig([
      { type: 'file', pattern: '.prettierrc' },
      { type: 'file', pattern: 'prettier.config.js' },
      { type: 'package.json', property: 'prettierrc' },
    ])
  ) {
    return PRETTIER_CONFIG;
  }

  return null;
}

export function getJestConfig(): string | null {
  if (
    !hasConfig([
      { type: 'file', pattern: 'jest.config.js' },
      { type: 'package.json', property: 'jest' },
    ])
  ) {
    return JEST_CONFIG;
  }

  return null;
}