Node.js Decompress base64 encoded zipped string with gzip

Question

First time posting on here, so sorry if I'm missing anything. I'm trying to decode this base64 string in Node.js like so:

encoded_string = H4sIAAAAAAAA//NIzcnJVwjPL8pJUQQAoxwpHAwAAAA=
decoded_string = Buffer.from(encoded_string, 'base64').toString('binary')

My goal is for decoded_string to evaluate to "Hello world!", but I need to use the gzip algorithm to output the correct value. Any pointers?

user_1180620 · Answer

Use this function to decode the binary.

Usage Example:

zlib.gunzipSync(Buffer.from(encoded_string, 'base64')).toString('utf8');