Don't mix streams and direct file operations about sitegen HOT 1 CLOSED

function createFile(filepath, extension){
    if(filepath.endsWith(extension)){
        let filename = path.basename(filepath, extension);

        const rs = fs.createReadStream(filepath);
        rs.setEncoding("utf8");
        rs.on("data", () =>{});
        rs.on("end", ()=>{});
        rs.on("error", (err) =>{
            console.error(`ReadStream encountered an error: ${err}`);
            process.exit(-1);
        });

        let ws = fs.createWriteStream(path.join(outputPath, filename.replace(/\s+/g, '_')+".html"));
        ws.on("finish", ()=>{});
        ws.on("error", (err) =>{
            console.error(`WriteStream encountered an error: ${err}`);
            ws.end();
            process.exit(-1);
        });

        const toHtmlStream = new Transform({
            objectMode: true,
            transform(chunk, encoding, callback){
                this.push(htmlContent(chunk.toString(), filename, extension));
                return callback();
            },
        });

        toHtmlStream.on('error', (err) =>{
            console.error(`toHtmlStream encountered an error: ${err}`);
            process.exit(-1);
        });

        //Piping data
        rs.pipe(toHtmlStream).pipe(ws);
    }
}