Save Octet-stream data as PDF file in javascript

Scenario 1:

Need to convert the below mentioned stream data into file in nodejs

Stream data sample: https://gist.github.com/sriramgroot/33e6e4934081f3d1b9d70c88873f2ad9

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Scenario 2:

Need to convert the below mentioned stream data into file in browser using reactjs framework

Stream data sample: https://gist.github.com/sriramgroot/33e6e4934081f3d1b9d70c88873f2ad9

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Response Header

Note: Final output should be a PDF file and it should be blank document

Found a solution for saving the file, and it if possible in Scenario 1.

1. In Octet-stream you will be receiving the response as "Encoded Binary Data"
2. Your need to convert the response data into "Decoded Base64 String"
3. Finally save it as PDF

Also we can use NPM package - Base64toPDF for making the listed process as automated.