# delba/JASON

Fast JSON parsing for Swift

Repository: https://github.com/delba/JASON
Canonical: https://ross.abutalabs.com/products/delba-jason
Language: Swift
License: MIT
License Family: permissive
Last push: 2021-02-14T06:38:14+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4085, "days_push": 2026, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1006, forks 69 (observed 2026-08-28T04:03:12.158522+00:00)

## What it is
JASON is a fast JSON deserialization library written in Swift, offering subscript-based parsing and type casting with a clean API. It supports iOS, macOS, tvOS, and watchOS and integrates with Alamofire and Moya.

## Use cases
- parse json responses in swift
- fast json deserialization for ios
- map json to swift model objects
- parse nested json with paths
- handle large json payloads in an ios app

## When to choose
- you need very fast JSON parsing in a Swift app
- you want a concise subscript-based JSON API
- you use Alamofire or Moya and want tight integration

## When to avoid
- you need Codable-based parsing or modern Swift concurrency
- you require actively maintained software - the last release was 2021
- you target platforms outside Apple's ecosystem

## Facets
- artifact type: library
- maturity: maintenance
- function: serialization, parser
- domain: developer-tools, apis, mobile-development
- platform: cross-platform
- tags: json, swift, deserialization, cocoapods, carthage, ios, macos

## Member repositories
- delba/JASON (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:12.158522+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:12:45.939991+00:00, confidence not recorded.
  - readme: https://github.com/delba/JASON (fetched 2026-08-28T04:03:12.158522+00:00, sha b58c240ca337)
- Data as of 2026-08-30T08:39:29.467469+00:00.