# microsoft/just

The task library that just works

Repository: https://github.com/microsoft/just
Canonical: https://ross.abutalabs.com/products/microsoft-just
Homepage: https://microsoft.github.io/just
Language: TypeScript
License: MIT
License Family: permissive
Topics: build, javascript, typescript
Last push: 2026-08-25T01:11:08+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 2785, "days_push": 9, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2025, forks 96 (observed 2026-08-28T04:06:06.763231+00:00)

## What it is
Just is a TypeScript-based task library for JavaScript projects, consisting of just-task (a lightweight task definition/orchestration library) and just-scripts (preset build flows for Node and browser projects using TypeScript, Webpack, and Jest). It is now in maintenance mode and not recommended for new projects.

## Use cases
- define build tasks for a javascript project
- preset build flows for typescript web projects
- run parallel and series task orchestration
- build and test frontend projects with sensible defaults
- keep config files visible instead of hiding them like create-react-app

## When to choose
- you maintain an existing project already using just-task or just-scripts
- you want lightweight gulp-style task orchestration with parallel() and series()
- you want visible, editable build configs with TypeScript-enabled build scripts

## When to avoid
- starting a new project, since just is in maintenance mode
- large monorepos needing task dependency orchestration, where Lage is recommended
- you need a task runner with active development and community support

## Facets
- artifact type: library
- maturity: maintenance
- function: build-tool, cli, developer-tools
- domain: web-development, frontend, developer-tools
- platform: cli, cross-platform
- tags: task-runner, typescript, webpack, jest, monorepo, build-automation, javascript, nodejs

## Member repositories
- microsoft/just (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:06.763231+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 2026-08-30T02:59:46.326652+00:00, confidence not recorded.
  - readme: https://github.com/microsoft/just (fetched 2026-08-28T04:06:06.763231+00:00, sha c7b06a9d0f64)
  - homepage: https://microsoft.github.io/just (fetched 2026-08-29T10:40:04.958716+00:00, sha 4294cf4c0eb1)
- Data as of 2026-08-30T08:39:29.467469+00:00.