@soleil-se/build-app/utils/eslint.js

Script for building WebApps, RESTApps and Widgets with Svelte in Sitevision.

import chalk from 'chalk';
import { getTimestamp, logWarning } from '@soleil-se/build-utils/log';

function logNotInstalledWarning() {
  logWarning(`ESLint is not installed, run ${chalk.white('npm i eslint --save-dev')} or start with ${chalk.white('--no-eslint')} flag.`);
}

let ESLint;

export default function createESLint({ src }) {
  return async () => {
    try {
      // eslint-disable-next-line import/no-extraneous-dependencies,node/no-extraneous-import
      ESLint = ESLint || await import('eslint').then((pkg) => pkg.ESLint);
    } catch (e) {
      logNotInstalledWarning();
      return;
    }
    if (ESLint) {
      const eslint = new ESLint({ errorOnUnmatchedPattern: false });
      const formatter = await eslint.loadFormatter();
      const results = await eslint.lintFiles(src);
      const errors = ESLint.getErrorResults(results);
      const output = formatter.format(results);

      if (errors.length) {
        const error = new Error(`\n${output}`);
        error.showStack = false;
        throw error;
      }
      if (output) {
        console.log(`${getTimestamp()} Warning:\n${output}`);
      }
    } else {
      logNotInstalledWarning();
    }
  };
}