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So, I'm iterating a file and want to chuck it into parts of 5MB (yes, to upload to S3).  Suggestions on how to determine accumulated line size as I iterator?

The challenge is, I won't know the average size of a single line, nor how many total line there are (at least I don't think I can get that up front)

I'm asking how I can chuck a NetSuite file into 5Mb chucnks

pick your favorite npm library to get a utf-8 string's byte length

and use that to tell the size of the string you have so far

avoid the ones that use Buffer unless you want to use a bundler

```const getByteSize = (s)  => {
    return ~-encodeURI(s).split(/%..|./).length;
}```
You can use this abhorrent function get find size. Can't remember how it works but probably stole it off stack overflow

image.png

As for chunking each one into exact 5Mb sizes? Don't think you can do that cause JS and browsers are inconsistent. You'll have to guess and check to my knowledge

I'll try these out .. I think I'll get into TOO MANY JAVASCRIPT EXECUTIONs for large files, but let's see