cesr/dist/message.js

[](https://www.npmjs.com/package/cesr) [](https://github.com/lenkan/cesr-js/blob/main/LICENSE)

import { parse } from "./parser.js";
/**
 * Parses JSON messages with CESR attachments from an incoming stream of bytes.
 *
 * @param input Incoming stream of bytes
 * @returns An async iterable of messages with attachments
 */
export async function* parseMessages(input, options = {}) {
    let group = null;
    let message = null;
    for await (const frame of parse(input, options)) {
        if (frame.type === "message") {
            if (message) {
                yield message;
            }
            message = { payload: JSON.parse(frame.text), attachments: {} };
            group = null;
        }
        else if (frame.code.startsWith("-")) {
            group = frame.code;
        }
        else {
            message = message ?? { payload: {}, attachments: {} };
            if (group) {
                message.attachments[group] = [...(message.attachments[group] ?? []), frame.text];
            }
        }
    }
    if (message) {
        yield message;
    }
}