0.5.5 - 2026-4-12

Release Notes

Added

• Add bytes2chars crate
• Add InvalidSequenceLength error variant
• Add prettify_value_into and uglify_value_into
• Provide rich utf8 error context to the cli

Documentation

• Fix changelog generation to include breaking features
• Organize benchmarks into multiple files, and replace manual throughput charts
• Reflect CPU requirements in readme and update stability

Fixed

• Parse value visitor now handles object key events properly

Performance

• Uglify_serializable now uses faster serialization from the crate instead of deferring to serde_json
• Replace next_if whitespace loop with peek fast path + byte scan
• Skip whitespace with portable SIMD (u8x32)

Install jjpwrgem 0.5.5

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/20jasper/jjpwrgem/releases/download/jjpwrgem-v0.5.5/jjpwrgem-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/20jasper/jjpwrgem/releases/download/jjpwrgem-v0.5.5/jjpwrgem-installer.ps1 | iex"

Install prebuilt binaries into your npm project

npm install jjpwrgem@0.5.5

Download jjpwrgem 0.5.5

File	Platform	Checksum
jjpwrgem-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
jjpwrgem-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
jjpwrgem-x86_64-pc-windows-msvc.zip	x64 Windows	checksum
jjpwrgem-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
jjpwrgem-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum

0.5.4-alpha.7 - 2025-12-23

Release Notes

Added

• experimental vscode extension

Performance

• don't build ast when validating syntax
• don't build ast when uglifying

Summary
  jjp format -u  < xtask/bench/data/json-benchmark/data/canada.json ran
    1.50 ± 0.05 times faster than jjpv0.5.3 format -u  < xtask/bench/data/json-benchmark/data/canada.json
  jjp check  < xtask/bench/data/json-benchmark/data/canada.json ran
    1.64 ± 0.04 times faster than jjpv0.5.3 check  < xtask/bench/data/json-benchmark/data/canada.json
  jjpv0.5.3 format   < xtask/bench/data/json-benchmark/data/canada.json ran
    1.00 ± 0.03 times faster than jjp format  < xtask/bench/data/json-benchmark/data/canada.json

Install jjpwrgem 0.5.4-alpha.7

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/20jasper/jjpwrgem/releases/download/jjpwrgem-v0.5.4-alpha.7/jjpwrgem-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/20jasper/jjpwrgem/releases/download/jjpwrgem-v0.5.4-alpha.7/jjpwrgem-installer.ps1 | iex"

Install prebuilt binaries into your npm project

npm install jjpwrgem@0.5.4-alpha.7

Download jjpwrgem 0.5.4-alpha.7

File	Platform	Checksum
jjpwrgem-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
jjpwrgem-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
jjpwrgem-x86_64-pc-windows-msvc.zip	x64 Windows	checksum
jjpwrgem-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
jjpwrgem-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum

bytes2chars 0.2.1

Documentation

• update crate level docs to include benchmarks and installation instructions. simplifies examples

bytes2chars 0.2.0

Added

• [breaking] add InvalidSequenceLength error variant

Documentation

• (tracey) document spec adherance with tracey

bytes2chars 0.1.1

Documentation

• (ci) fix crates.io documentation via using cargo-rdme to process docs. fixes intradoc links and hides boilerplate from codeblocks

bytes2chars 0.1.0

bytes2chars-v0.1.0

chore: Release package bytes2chars version 0.1.0

0.5.4 - 2025-12-23

Release Notes

Added

• experimental vscode extension

Performance

• don't build ast when validating syntax
• don't build ast when uglifying

Summary
  jjp format -u  < xtask/bench/data/json-benchmark/data/canada.json ran
    1.50 ± 0.05 times faster than jjpv0.5.3 format -u  < xtask/bench/data/json-benchmark/data/canada.json
  jjp check  < xtask/bench/data/json-benchmark/data/canada.json ran
    1.64 ± 0.04 times faster than jjpv0.5.3 check  < xtask/bench/data/json-benchmark/data/canada.json
  jjpv0.5.3 format   < xtask/bench/data/json-benchmark/data/canada.json ran
    1.00 ± 0.03 times faster than jjp format  < xtask/bench/data/json-benchmark/data/canada.json

Install jjpwrgem 0.5.4

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/20jasper/jjpwrgem/releases/download/jjpwrgem-v0.5.4/jjpwrgem-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/20jasper/jjpwrgem/releases/download/jjpwrgem-v0.5.4/jjpwrgem-installer.ps1 | iex"

Install prebuilt binaries into your npm project

npm install jjpwrgem@0.5.4

Download jjpwrgem 0.5.4

File	Platform	Checksum
jjpwrgem-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
jjpwrgem-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
jjpwrgem-x86_64-pc-windows-msvc.zip	x64 Windows	checksum
jjpwrgem-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
jjpwrgem-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum

0.5.3 - 2025-12-15

Release Notes

fixed

• removed tarball from npm release

Install jjpwrgem 0.5.3

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/20jasper/jjpwrgem/releases/download/jjpwrgem-v0.5.3/jjpwrgem-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/20jasper/jjpwrgem/releases/download/jjpwrgem-v0.5.3/jjpwrgem-installer.ps1 | iex"

Install prebuilt binaries into your npm project

npm install jjpwrgem@0.5.3

Download jjpwrgem 0.5.3

File	Platform	Checksum
jjpwrgem-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
jjpwrgem-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
jjpwrgem-x86_64-pc-windows-msvc.zip	x64 Windows	checksum
jjpwrgem-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
jjpwrgem-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum

0.5.2 - 2025-12-15

Release Notes

Added

• use custom npm package builder and release instead of dists'

Removed

• unused console.table in npm installer

Install jjpwrgem 0.5.2

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/20jasper/jjpwrgem/releases/download/jjpwrgem-v0.5.2/jjpwrgem-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/20jasper/jjpwrgem/releases/download/jjpwrgem-v0.5.2/jjpwrgem-installer.ps1 | iex"

Install prebuilt binaries into your npm project

npm install jjpwrgem@0.5.2

Download jjpwrgem 0.5.2

File	Platform	Checksum
jjpwrgem-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
jjpwrgem-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
jjpwrgem-x86_64-pc-windows-msvc.zip	x64 Windows	checksum
jjpwrgem-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
jjpwrgem-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum

0.5.1 - 2025-12-14

Release Notes

Added

• end of line option

Install jjpwrgem 0.5.1

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/20jasper/jjpwrgem/releases/download/jjpwrgem-v0.5.1/jjpwrgem-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/20jasper/jjpwrgem/releases/download/jjpwrgem-v0.5.1/jjpwrgem-installer.ps1 | iex"

Install prebuilt binaries into your npm project

npm install jjpwrgem@0.5.1

Download jjpwrgem 0.5.1

File	Platform	Checksum
jjpwrgem-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
jjpwrgem-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
jjpwrgem-x86_64-pc-windows-msvc.zip	x64 Windows	checksum
jjpwrgem-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
jjpwrgem-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum