frames-adapter is a small typescript library that can be used as an adapter to DSCVR's protocol from different frames frameworks.

The library provides a couple of helper methods to validate the trusted message data of a frame action and also to determine if a frame is using the DSCVR protocol.

You can install Frames Adapter via npm:

npm install @dscvr-one/frames-adapter

yarn

yarn add @dscvr-one/frames-adapter

To use Frames Adapter, simply import it into your typescript project:

import {
  type DscvrFramesRequest,
  type DscvrClientProtocol,
  type DscvrFrameActionData,
  validateClientProtocol,
  validateFramesPost,
} from '@dscvr-one/frames-adapter';

Then, you can use the functions provided by Frames Adapter to validate a Frame Post payload.

import {
  type DscvrFramesRequest,
  type DscvrClientProtocol,
  type DscvrFrameActionData,
  validateClientProtocol,
  validateFramesPost,
} from '@dscvr-one/frames-adapter';

export const isDscvrFrameActionPayload = (
  frameActionPayload: FrameActionPayload,
): frameActionPayload is DscvrFramesRequest => {
  return (
    !!frameActionPayload.clientProtocol &&
    validateClientProtocol(frameActionPayload.clientProtocol)
  );
};

export const getDscvrFrameMessage = async (
  frameActionPayload: DscvrFramesRequest,
) => {
  const result = await validateFramesPost({
    ...frameActionPayload,
    clientProtocol: frameActionPayload.clientProtocol as DscvrClientProtocol,
  });

  return result;
};

Expected payload should have the next structure

{
  "clientProtocol": "dscvr@...",
  "untrustedData": {
    "dscvrId": "...",
    "contentId": 123,
    "state": "...",
    "url": "...",
    "timestamp": 123,
    "buttonIndex": 1,
    "inputText": "...",
    "address": "...",
    "transactionId": "..."
  },
  "trustedData": {
    "messageBytes": "..."
  }
}

Contributions are welcome! If you find any issues or have suggestions for improvement, feel free to open an issue or submit a pull request.

Note:

1. Please contribute using GitHub Flow
2. Commits & PRs will be allowed only if the commit messages & PR titles follow the conventional commit standard, read more about it here
3. PS. Ensure your commits are signed. Read why

• type DscvrUntrustedData in file src/types.ts should be a type with the && operator and not an interface with extend, otherwise a type predicate wont work e.g:

const fn = (payload: T): payload is DscvrFramesRequest