@splitsoftware/splitio-commons
Version:
Split JavaScript SDK common components
37 lines (36 loc) • 1.72 kB
JavaScript
import { OCCUPANCY } from '../constants';
import { isString } from '../../../utils/lang';
/**
* Parses the `data` JSON string, if exists, of a given SSE error notifications.
* HTTP errors handled by Ably (e.g., 400 due to invalid token, 401 due to expired token, 500) have the `data` property.
* Other network and HTTP errors do not have this property.
*
* @param error - The error event to parse
* @returns parsed notification error
* @throws SyntaxError if `error.data` is an invalid JSON string
*/
export function errorParser(error) {
// @ts-ignore
if (isString(error.data))
error.parsedData = JSON.parse(error.data); // cannot assign to read only property 'data'
return error;
}
/**
* Parses the `data` JSON string of a given SSE message notifications.
* Also assigns the type OCCUPANCY, if it corresponds, so that all supported messages (e.g., SPLIT_UPDATE, CONTROL) have a type.
*
* @param message - The message event to parse
* @returns parsed notification message or undefined if the given event data is falsy (e.g, '' or undefined).
* For example, the EventSource implementation of React-Native for iOS emits a message event with empty data for Ably keepalive comments.
* @throws SyntaxError if `message.data` or `JSON.parse(message.data).data` are invalid JSON strings
*/
export function messageParser(message) {
if (!message.data)
return;
var messageData = JSON.parse(message.data);
messageData.parsedData = JSON.parse(messageData.data);
// set the event type to OCCUPANCY, to handle all events uniformely
if (messageData.name && messageData.name === '[meta]occupancy')
messageData.parsedData.type = OCCUPANCY;
return messageData;
}