fix-client/src/lib/util/FrameDecoder.js

A minimalist FIX API client

const { Transform } = require('stream');

class FrameDecoder extends Transform {
    constructor(opts) {
        super(opts);
        this.data = '';
    }

    _transform(chunk, encoding, callback) {
        const chunks = (this.data + chunk).split(/(8=.+?\x0110=\d\d\d\x01)/g);
        for (let i = 0; i < chunks.length - 1; i++) {
            this.push(chunks[i]);
        }
        this.data = chunks[chunks.length - 1];
        callback();
    }

    destroy() {
        this.data = null;
    }
}

module.exports = FrameDecoder