Integrate eslint, auto-changelog, prettier and jest as commands

.eslintrc

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+{
+  "extends": "./shared/eslint.json",
+  "rules": {
+    "global-require": "off"
+  }
+}

.prettierrc

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+"./shared/prettier.json"

LICENSE

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright [yyyy] [name of copyright owner]
+   Copyright 2021 Lifion/ADP
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

README.md

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+# core-commons
+
+Lifion's development setup in one command for our public Node.js projects.

bin/cli.js

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+#!/usr/bin/env node
+
+'use strict';
+
+const chalk = require('chalk');
+const path = require('path');
+const yargs = require('yargs');
+
+async function start() {
+  const argv = process.argv.slice(2);
+  const header = 'Development framework by and for the Core Team.';
+  const learnMore = 'Read the manual at https://core.lifion.oneadp.com/libs/core-commons';
+  const { npm_lifecycle_event: lifecycleEvent } = process.env;
+
+  if (lifecycleEvent) {
+    argv.push(lifecycleEvent);
+  }
+
+  yargs(argv)
+    .usage(`${header}\n\n${chalk.bold('USAGE')}\n  $0 <command> [options]`)
+    .epilogue(`${chalk.bold('LEARN MORE')}\n  ${learnMore}`)
+    .commandDir(path.resolve(__dirname, '../lib/commands'))
+    .demandCommand()
+    .recommendCommands()
+    .strict()
+    .help()
+    .updateStrings({
+      'Commands:': chalk.bold('COMMANDS'),
+      'Options:': chalk.bold('OPTIONS')
+    })
+    .parse();
+}
+
+start();

lib/commands/eslint.js

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+'use strict';
+
+const path = require('path');
+
+async function handler() {
+  process.argv.push(
+    ...[['.'], ['--ext', '.js,.json,.md'], ['--ignore-pattern', '!.*.*']].flatMap((i) => i)
+  );
+  require('eslint/bin/eslint');
+}
+
+module.exports = {
+  command: path.parse(__filename).name,
+  describe: 'Check the codebase with ESLint.',
+  handler
+};

lib/commands/prettier.js

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+'use strict';
+
+const path = require('path');
+
+async function handler() {
+  const exts = ['hbs', 'js', 'json', 'md', 'ts'];
+  process.argv.push('--write', `**/*.{${exts.join(',')}}`, '.*rc', '!reports/*');
+  require('prettier/bin-prettier');
+}
+
+module.exports = {
+  command: path.parse(__filename).name,
+  describe: 'Format the codebase with Prettier.',
+  handler
+};

lib/commands/test.js

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+'use strict';
+
+const path = require('path');
+
+async function handler() {
+  const cfg = {
+    collectCoverage: true,
+    collectCoverageFrom: ['**/*.js'],
+    coverageDirectory: path.resolve(process.cwd(), 'coverage'),
+    coverageReporters: ['clover', 'lcov', 'text'],
+    coverageThreshold: {
+      global: {
+        branches: 100,
+        functions: 100,
+        lines: 100,
+        statements: 100
+      }
+    },
+    rootDir: path.resolve(process.cwd(), 'lib'),
+    testEnvironment: 'node'
+  };
+  process.argv.push('--config', JSON.stringify(cfg));
+  require('jest/bin/jest');
+}
+
+module.exports = {
+  command: path.parse(__filename).name,
+  describe: 'Run tests with Jest.',
+  handler
+};

lib/commands/version.js

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+'use strict';
+
+const path = require('path');
+
+async function handler() {
+  process.argv.push(
+    ...[
+      ['--package'],
+      ['--commit-limit', 'false'],
+      ['--template', path.resolve(__dirname, '../../shared/CHANGELOG.hbs')]
+    ].flatMap((i) => i)
+  );
+  require('auto-changelog');
+}
+
+module.exports = {
+  command: path.parse(__filename).name,
+  describe: 'Generate the changelog.',
+  handler
+};