node app.js > app.log 2>&1 Another method that is described below with code examples can be used to tackle the same issue Save Console Log To File Nodejs. const fastcsv require ( 'fast-csv' ) const fs.
First, we have to install the module: npm i -s fast-csv.
We'll show another example of a popular CSV module and take a look at how we can write our data array using the fast-csv module as an alternative. const path 'path/to/the/file' array BigInt64Array (0) buffer om (array.buffer) fs.createWriteStream (path).write (buffer) View another examples Add Own solution. Related Posts: Save Console Log To File Nodejs With Code Examples Save Console Log To File Nodejs With Code Examples With this article, we'll look at some examples of Save Console Log To File Nodejs problems in programming. The Node.js ecosystem and npm provides a lot of options to read and write CSV files. options: It is an string or object that can be used to specify optional parameters that will affect the output. This allows you to write to a specified file path, with asynchronous behavior, and creates a new file or replaces one if it exists at the path. The simplest way, and often the most appropriate, is to use the writeFile method in the fs module. data: It is a string, Buffer, TypedArray or DataView that will be written to the file. As we saw, there are multiple approaches to consider when writing to a file in Node.js. This is the file create from NodeJS: # hd test.txt | headĠ0000000 47 49 46 38 39 61 32 00 32 00 f7 00 00 96 8c 73 |GIF89a2.2.�.s|Ġ0000010 66 5e 45 c6 bb 9f 7b 72 5a 47 47 47 8a 81 65 ca |f^Eƻ. / Using nodejs' fs module you can create a WriteStream to handle raw stream of bytes and buffers. Using a file descriptor will make the it behave similar to fs.write() method. I can't rewrite a file that I am getting from a binary buffer, I have checked with the original file and all bytes are the same.