agentsqripts/lib/performance/ast/string-concat/check/isStringConcatenation.js

Comprehensive static code analysis toolkit for identifying technical debt, security vulnerabilities, performance issues, and code quality problems

/**
 * @file Check if assignment is string concatenation
 * @description Single responsibility: Determine if assignment node is string concatenation pattern
 */

const isStringOperation = require('./isStringOperation');

/**
 * Check if assignment is string concatenation
 * @param {Object} node - Assignment expression node
 * @returns {boolean} True if assignment is string concatenation
 */
function isStringConcatenation(node) {
  // Check if assignment is of form: str = str + ...
  if (node.left.type === 'Identifier' &&
      node.right.type === 'BinaryExpression' &&
      node.right.operator === '+' &&
      node.right.left.type === 'Identifier' &&
      node.right.left.name === node.left.name) {
    return isStringOperation(node.right.right);
  }
  return false;
}

module.exports = isStringConcatenation;