minijson

Minify JSON files blazing fast, removing comments/whitespace.

Uses D, C, and AVX2 and SSE4_1 SIMD. 4180 times faster than jsonminify!

Installation

• Npm (Nodejs)

npm install @aminya/minijson

• Dub (D)

git submodule update --init --recursive
dub build --config=library --build=release-nobounds --compiler=ldc2
# or
dub build --config=executable --build=release-nobounds --compiler=ldc2

• Download Native Binaries from https://github.com/aminya/minijson/releases/latest

CLI Usage

# Minify the specified files
minijson ./dist/**/*.json ./build/a.json

# Minify the specified files (supports comments)
minijson --comment file1_with_comment.json file2_with_comment.json

# Minify the specified json string
minijson --str '{"some_json": "string_here"}'

# Minify the specified json string (supports comments)
minijson --comment --str '{"some_json": "string_here"} //comment'

> minijson --help

Usage: minijson [--files FILES ...] [--comment] [--str STR ...] [--file FILE ...] [-h]

minijson: minify json files with support for comments

Optional arguments:
  --files FILES ...
  --comment
  --str STR ...
  --file FILE ...
  -h, --help           Show this help message and exit

Node API

import { minifyFiles, minifyString } from "minijson"

// minify the files in-place and in parallel
await minifyFiles(["file1.json", "file2.json"])

// supports comments by passing true as the second argument
await minifyFiles(["file1_with_comment.json", "file2_with_comment.json"], true)

// minify the given string
const minifiedString = minifyString(`{"some_json": "here"}`)

// supports comments by passing true as the second argument
const minifiedString2 = minifyString(`{"some_json": "here"}//comment`, true)

Note: in the Nodejs API, prefer minifyFiles over other functions, as it minifies the files in parallel with the least amount of resources.

D API

import minijson: minifyString, minifyFiles;

// minify the given string
const minifiedString = minifyString(`{"some_json": "here"}`);

// supports comments by passing true as the second argument
const minifiedString2 = minifyString(`{"some_json": "here"}//comment`, true);

// minify the files in-place and in parallel
minifyFiles(["file1.json", "file2.json"]);

// supports comments by passing true as the second argument
minifyFiles(["file1.json", "file2.json"], true);

Benchmarks

On AMD Ryzen 7 4800H:

• minifyString: minijson is 4178 times faster than jsonMinify
• minifyFiles: minijson is 1894 times faster than jsonMinify.

❯ .\dist\minijson-benchmark.exe --benchmark-minifyString --benchmark-minifyFiles
Benchmark minifyString
14 ms
Benchmark minifyFiles
31 ms

❯ node .\benchmark\js-benchmark.mjs
Benchmark minifyString
58.502 seconds
Benchmark minifyFiles
58.703 seconds

Contributing

You would need to install the ldc compiler for the D programming language

curl -fsS https://dlang.org/install.sh | bash -s ldc

After installation, it will print a message about activating it. Something like source activate_ldc.sh.

After running the activation command, clone the repository:

git clone --recurse-submodules https://github.com/aminya/minijson
cd minijson

Then build with:

pnpm install
pnpm build.node

License

The project is licensed under MIT. It was inspired by fkei/JSON.minify.