yaml-lint

import yamlLint from 'yaml-lint'; import { readFileSync } from 'fs'; import { join } from 'path'; // Example 1: Linting a string directly yamlLint .lint('key: value\narray:\n - item1\n - item2') .then(() => { console.log('String content is valid YAML.'); }) .catch((error) => { console.error('String content is invalid YAML:', error.message); }); // Example 2: Linting a file (assuming a test.yaml exists for this example) const filePath = join(process.cwd(), 'test.yaml'); // To make this runnable, create a dummy test.yaml for demonstration: // fs.writeFileSync(filePath, 'foo: bar\nversion: 1.0'); // For a real scenario, ensure 'test.yaml' exists and contains valid YAML try { const fileContent = readFileSync(filePath, 'utf8'); yamlLint.lint(fileContent) .then(() => console.log(`${filePath} is valid YAML.`)) .catch(error => console.error(`${filePath} is invalid YAML:`, error.message)); } catch (err) { console.warn(`Could not read ${filePath}. Please create it for file linting demo.`); // Example of how you'd explicitly fail a file lint for a broken file: // yamlLint.lint('invalid: - \n - yaml') // .catch(error => console.error('Intentional invalid file content error:', error.message)); }