How to read file line by line with custom delimiter?

Question

JavaScript

There are large files with several million lines,
line-by-line reading is required, but not with a standard separator,
\r\n
but with a custom one, because the file contains the following pattern:

строка 1: ...................
строка 2: ......РАЗДЕЛИТЕЛЬ
строка 3: ....................РАЗДЕЛИТЕЛЬ

those. data from the first line still continues to the second, and the desired separator can only be found at the end of the next line.

Answer 1

You can use https://www.npmjs.com/package/streamsearch
It is used in busboy to parse http multipart/form-data, where just the fields are separated by a special delimiter

Answer 2

Nuuu, regular seasons, why don’t they please them?