Function validate

src/services/permission/valve/path-parser.ts:15–35

(path: string)

 * @returns {String|Boolean} true if path is valid, string error message if not
 */
export const validate = (path: string): string | boolean => {
  if (typeof path !== 'string') {
    return 'path must be a string'
  }

  if (path.length === 0) {
    return 'path can\'t be empty'
  }

  if (path[0] === '/') {
    return 'path can\'t start with /'
  }

  const invalidVariableNames = path.match(INVALID_VARIABLE_REGEXP)

  if (invalidVariableNames !== null) {
    return `invalid variable name ${invalidVariableNames[0]}`
  }

  return true
}

/**
 * Parses a path and returns a regexp matcher with capture groups for