ndjson vs jq

ndjson

Streaming line delimited json parser + serializer (by ndjson)

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jq

Command-line JSON processor [Moved to: https://github.com/jqlang/jq] (by stedolan)

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ndjson		jq
	Project
1	Mentions	306
106	Stars	25,063
0.0%	Growth	-
0.0	Activity	0.0
over 2 years ago	Latest Commit	11 months ago
JavaScript	Language	C
-	License	GNU General Public License v3.0 or later

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

ndjson

Posts with mentions or reviews of ndjson. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-06-02.

Show HN: Transform a CSV into a JSON and vice versa
11 projects | news.ycombinator.com | 2 Jun 2021

ndjson appears to be a fork of jsonlines with the addition of a spec (see https://github.com/ndjson/ndjson.github.io/issues/1)

jq

Posts with mentions or reviews of jq. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-08-21.

GNU Parallel, where have you been all my life?
19 projects | news.ycombinator.com | 21 Aug 2023

That should recursively list directories, counting only the files within each, and output² jsonl that can be further mangled within the shell². You could just as easily populate an associative array for further work, or $whatever. Unlike bash, zsh has reasonable behaviour around quoting and whitespace too.
¹ https://zsh.sourceforge.io/Doc/Release/User-Contributions.ht...
² https://github.com/jpmens/jo
³ https://github.com/stedolan/jq
How do i edit reputation?
1 project | /r/daggerfallunity | 25 May 2023
Jj: JSON Stream Editor
7 projects | news.ycombinator.com | 25 May 2023

What I miss from jq and what is implemented but unreleased is platform independent line delimiters.
jq on Windows produces \r\n terminated lines which can be annoying when used with Cygwin / MSYS2 / WSL. The '--binary' option to not convert line delimiters is one of those pending improvements.
https://github.com/stedolan/jq/commit/0dab2b18d73e561f511801...
Building and deploying a web API powered by ChatGPT
12 projects | dev.to | 24 May 2023

If you have jq installed you can use it to make the output look nicer.
Search in your Jupyter notebooks from the CLI, fast.
2 projects | dev.to | 16 May 2023

It requires jq for JSON processing and GNU parallel for concurrent searches in the notebooks.
Check the jq manual!
1 project | /r/programmingcirclejerk | 14 May 2023
mkv vs mp4 metadata
1 project | /r/youtubedl | 7 May 2023
Amazon Begs Employees Not to Leak Corporate Secrets to ChatGPT
1 project | /r/programming | 27 Apr 2023

jq is your friend.
Memes are all cool and all. But this is your daily remaining that 10000! =
4 projects | /r/mathmemes | 23 Apr 2023
How to export/import/externally-edit/whatever WI entries?
1 project | /r/KoboldAI | 19 Apr 2023

The jq command (https://stedolan.github.io/jq/) is useful pulling that information out.

What are some alternatives?

When comparing ndjson and jq you can also consider the following projects:

ndjson.github.io - Info Website for NDJSON

yq - Command-line YAML, XML, TOML processor - jq wrapper for YAML/XML/TOML documents

json-toolkit - "the best opensource converter I've found across the Internet" -- dene14

dasel - Select, put and delete data from JSON, TOML, YAML, XML and CSV files with a single tool. Supports conversion between formats and can be used as a Go package.

jq - Command-line JSON processor

gojq - Pure Go implementation of jq

jsonmatic - ⚗️ Transform a CSV (spreadsheet) into a JSON.

json5 - JSON5 — JSON for Humans

miller - Miller is like awk, sed, cut, join, and sort for name-indexed data such as CSV, TSV, and tabular JSON

jp - Validate and transform JSON with Bash

csv2json - Simple tool for converting CSVs to JSON

nushell - A new type of shell