pj/sanderling

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pj e62319e916 docs: pandoc-based site and v0.1.0 groundwork (#5 )

* chore(prose): remove em-dashes from config files

* chore(prose): remove em-dashes from android sdk config

* docs(spec-api): remove em-dash from README

* fix(doctor): reword sidecar-jar error without em-dash

* test(sidecar): reword assertion message without em-dash

* docs: add CLAUDE.md with project conventions

* build: add docs target for pandoc site

* docs(site): add pandoc template and stylesheet

* docs(site): add pandoc build script

* docs(site): add landing pages

* docs(manual): add getting-started

* docs(manual): add writing-specs

* docs(manual): add runs

* docs(manual): add cli reference

* docs(dev): add design principles

* docs(dev): add architecture

* ci: deploy docs site to github pages

* docs: rewrite README as entry point to docs site

2026-04-18 14:00:57 +07:00

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@uatu/spec

TypeScript spec API for uatu, a property-based UI fuzzer for mobile apps.

Spec authors write specs in TypeScript that describe what an app should always do (safety invariants), generate weighted actions to exercise the app, and extract structured state from the accessibility tree. The uatu CLI picks up the spec and drives the app under test.

Install

npm install --save-dev @uatu/spec

Usage

import { extract, always, actions, Tap, weighted } from "@uatu/spec";

export const spec = {
  extract: extract((tree) => ({
    onHomeScreen: tree.some((n) => n.text === "Home"),
  })),

  always: always(({ state }) => state.onHomeScreen || !state.startedOnHome),

  actions: actions(({ tree }) =>
    weighted([
      [1, Tap(tree.first((n) => n.text === "Checkout"))],
    ]),
  ),
};

Version compatibility

@uatu/spec is released in lockstep with the uatu CLI. Pin the same major/minor version as your installed uatu binary.

License

Apache-2.0

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