feat: v6.0.0-alpha.0 - the future is now

tools/cli/lib/config.js

@@ -0,0 +1,210 @@
+const fs = require('fs-extra');
+const yaml = require('js-yaml');
+const path = require('node:path');
+
+/**
+ * Configuration utility class
+ */
+class Config {
+  /**
+   * Load a YAML configuration file
+   * @param {string} configPath - Path to config file
+   * @returns {Object} Parsed configuration
+   */
+  async loadYaml(configPath) {
+    if (!(await fs.pathExists(configPath))) {
+      throw new Error(`Configuration file not found: ${configPath}`);
+    }
+
+    const content = await fs.readFile(configPath, 'utf8');
+    return yaml.load(content);
+  }
+
+  /**
+   * Save configuration to YAML file
+   * @param {string} configPath - Path to config file
+   * @param {Object} config - Configuration object
+   */
+  async saveYaml(configPath, config) {
+    const yamlContent = yaml.dump(config, {
+      indent: 2,
+      lineWidth: 120,
+      noRefs: true,
+    });
+
+    await fs.ensureDir(path.dirname(configPath));
+    await fs.writeFile(configPath, yamlContent, 'utf8');
+  }
+
+  /**
+   * Process configuration file (replace placeholders)
+   * @param {string} configPath - Path to config file
+   * @param {Object} replacements - Replacement values
+   */
+  async processConfig(configPath, replacements = {}) {
+    let content = await fs.readFile(configPath, 'utf8');
+
+    // Standard replacements
+    const standardReplacements = {
+      '{project-root}': replacements.root || '',
+      '{module}': replacements.module || '',
+      '{version}': replacements.version || '5.0.0',
+      '{date}': new Date().toISOString().split('T')[0],
+    };
+
+    // Apply all replacements
+    const allReplacements = { ...standardReplacements, ...replacements };
+
+    for (const [placeholder, value] of Object.entries(allReplacements)) {
+      if (typeof placeholder === 'string' && typeof value === 'string') {
+        const regex = new RegExp(placeholder.replaceAll(/[.*+?^${}()|[\]\\]/g, String.raw`\$&`), 'g');
+        content = content.replace(regex, value);
+      }
+    }
+
+    await fs.writeFile(configPath, content, 'utf8');
+  }
+
+  /**
+   * Merge configurations
+   * @param {Object} base - Base configuration
+   * @param {Object} override - Override configuration
+   * @returns {Object} Merged configuration
+   */
+  mergeConfigs(base, override) {
+    return this.deepMerge(base, override);
+  }
+
+  /**
+   * Deep merge two objects
+   * @param {Object} target - Target object
+   * @param {Object} source - Source object
+   * @returns {Object} Merged object
+   */
+  deepMerge(target, source) {
+    const output = { ...target };
+
+    if (this.isObject(target) && this.isObject(source)) {
+      for (const key of Object.keys(source)) {
+        if (this.isObject(source[key])) {
+          if (key in target) {
+            output[key] = this.deepMerge(target[key], source[key]);
+          } else {
+            output[key] = source[key];
+          }
+        } else {
+          output[key] = source[key];
+        }
+      }
+    }
+
+    return output;
+  }
+
+  /**
+   * Check if value is an object
+   * @param {*} item - Item to check
+   * @returns {boolean} True if object
+   */
+  isObject(item) {
+    return item && typeof item === 'object' && !Array.isArray(item);
+  }
+
+  /**
+   * Validate configuration against schema
+   * @param {Object} config - Configuration to validate
+   * @param {Object} schema - Validation schema
+   * @returns {Object} Validation result
+   */
+  validateConfig(config, schema) {
+    const errors = [];
+    const warnings = [];
+
+    // Check required fields
+    if (schema.required) {
+      for (const field of schema.required) {
+        if (!(field in config)) {
+          errors.push(`Missing required field: ${field}`);
+        }
+      }
+    }
+
+    // Check field types
+    if (schema.properties) {
+      for (const [field, spec] of Object.entries(schema.properties)) {
+        if (field in config) {
+          const value = config[field];
+          const expectedType = spec.type;
+
+          if (expectedType === 'array' && !Array.isArray(value)) {
+            errors.push(`Field '${field}' should be an array`);
+          } else if (expectedType === 'object' && !this.isObject(value)) {
+            errors.push(`Field '${field}' should be an object`);
+          } else if (expectedType === 'string' && typeof value !== 'string') {
+            errors.push(`Field '${field}' should be a string`);
+          } else if (expectedType === 'number' && typeof value !== 'number') {
+            errors.push(`Field '${field}' should be a number`);
+          } else if (expectedType === 'boolean' && typeof value !== 'boolean') {
+            errors.push(`Field '${field}' should be a boolean`);
+          }
+
+          // Check enum values
+          if (spec.enum && !spec.enum.includes(value)) {
+            errors.push(`Field '${field}' must be one of: ${spec.enum.join(', ')}`);
+          }
+        }
+      }
+    }
+
+    return {
+      valid: errors.length === 0,
+      errors,
+      warnings,
+    };
+  }
+
+  /**
+   * Get configuration value with fallback
+   * @param {Object} config - Configuration object
+   * @param {string} path - Dot-notation path to value
+   * @param {*} defaultValue - Default value if not found
+   * @returns {*} Configuration value
+   */
+  getValue(config, path, defaultValue = null) {
+    const keys = path.split('.');
+    let current = config;
+
+    for (const key of keys) {
+      if (current && typeof current === 'object' && key in current) {
+        current = current[key];
+      } else {
+        return defaultValue;
+      }
+    }
+
+    return current;
+  }
+
+  /**
+   * Set configuration value
+   * @param {Object} config - Configuration object
+   * @param {string} path - Dot-notation path to value
+   * @param {*} value - Value to set
+   */
+  setValue(config, path, value) {
+    const keys = path.split('.');
+    const lastKey = keys.pop();
+    let current = config;
+
+    for (const key of keys) {
+      if (!(key in current) || typeof current[key] !== 'object') {
+        current[key] = {};
+      }
+      current = current[key];
+    }
+
+    current[lastKey] = value;
+  }
+}
+
+module.exports = { Config };