recaptcha-server

The server side recaptcha module to do verification. Use with Google reCaptcha

Usage

This verification used the v3 method, which returns a score (1.0 is very likely a good interaction, 0.0 is very likely a bot).

The lib by default use the 0.6 as the default passed minScore(not included)

import Recaptcha from '@pardjs/recaptcha-server';

// #RECAPTCHA_SECRET get from the google recaptcha site.
const recInstance = new Recaptcha('#RECAPTCHA_SECRET#');

// Verifiy the token directly
// #RECAPTCHA_TOKEN get from the client
const v3Result = await recInstance.verifyV3Async('#RECAPTCHA_TOKEN#'); request.
// Verifiy the token with custom min passed score
const v3Result = await recInstance.verifyV3Async('#RECAPTCHA_TOKEN#', 0.8);

// The v3Result example
// {
//   isPassed: true,
//   score: 0.9,
//   hostName: 'dozto.com',
//   action: 'contactUs',
//   checkedAt: 2019-04-03T08:51:34.038Z
// }

Error Types

There will be a type in the throwed error object, and there are the following defined types

RECAPTCHA_VERIFY_ERROR: The verification handled by google successfully, but faild in the verificatoin result.
RECAPTCHA_UNEXPECTED_ERROR: Unexpected error during process google reCaptcha verification.

Example

{ Error: [recaptcha-server] Failed to verify recaptcha: invalid-secret
  at Recaptcha.<anonymous> (/Users/ole3021/workspaces/pardjs/recaptcha-server/src/recaptcha-server.ts:3006:35)
  at step (/Users/ole3021/workspaces/pardjs/recaptcha-server/src/recaptcha-server.ts:2909:27)
  at Object.next (/Users/ole3021/workspaces/pardjs/recaptcha-server/src/recaptcha-server.ts:2797:20)
  at fulfilled (/Users/ole3021/workspaces/pardjs/recaptcha-server/src/recaptcha-server.ts:2736:32)
  at process._tickCallback (internal/process/next_tick.js:68:7) type: 'RECAPTCHA_UNEXPECTED_ERROR' }

error.type === 'RECAPTCHA_VERIFY_ERROR' // true