claude-code-company/lib/utils/validation.js

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function validateNotNull(param, paramName) {
  if (param === null || param === undefined) {
    throw new Error(`${paramName} is null or undefined`);
  }
}

function validateType(param, expectedType, paramName) {
  if (typeof param !== expectedType) {
    throw new Error(`${paramName} must be ${expectedType}, got ${typeof param}`);
  }
}

function validateNumber(param, min, max, paramName) {
  const num = parseInt(param);
  if (isNaN(num) || num < min || num > max) {
    throw new Error(`${paramName} must be a number between ${min} and ${max}`);
  }
  return num;
}

function validateString(param, paramName, allowEmpty = false) {
  validateType(param, 'string', paramName);
  if (!allowEmpty && param.trim().length === 0) {
    throw new Error(`${paramName} must be a non-empty string`);
  }
}

module.exports = { 
  validateNotNull, 
  validateType, 
  validateNumber, 
  validateString 
};