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metamask-extension/app/scripts/lib/rpc-method-middleware/handlers/watch-asset.js
Shane 74b5401302
Fixed API for watchAsset (#14545)
* Fixed API for watchAsset

* Fixed boolean return value for watchAsset
2022-04-27 07:47:10 -07:00

51 lines
1.5 KiB
JavaScript

import { ethErrors } from 'eth-rpc-errors';
import { MESSAGE_TYPE } from '../../../../../shared/constants/app';
const watchAsset = {
methodNames: [MESSAGE_TYPE.WATCH_ASSET, MESSAGE_TYPE.WATCH_ASSET_LEGACY],
implementation: watchAssetHandler,
hookNames: {
handleWatchAssetRequest: true,
},
};
export default watchAsset;
/**
* @typedef {Object} WatchAssetOptions
* @property {Function} handleWatchAssetRequest - The wallet_watchAsset method implementation.
*/
/**
* @typedef {Object} WatchAssetParam
* @property {string} type - The type of the asset to watch.
* @property {Object} options - Watch options for the asset.
*/
/**
* @param {import('json-rpc-engine').JsonRpcRequest<WatchAssetParam>} req - The JSON-RPC request object.
* @param {import('json-rpc-engine').JsonRpcResponse<true>} res - The JSON-RPC response object.
* @param {Function} _next - The json-rpc-engine 'next' callback.
* @param {Function} end - The json-rpc-engine 'end' callback.
* @param {WatchAssetOptions} options
*/
async function watchAssetHandler(
req,
res,
_next,
end,
{ handleWatchAssetRequest },
) {
try {
const { options: asset, type } = req.params;
const handleWatchAssetResult = await handleWatchAssetRequest(asset, type);
await handleWatchAssetResult.result;
res.result = true;
return end();
} catch (error) {
if (error.message === 'User rejected to watch the asset.') {
return end(ethErrors.provider.userRejectedRequest());
}
return end(error);
}
}