Files
sanderling/pkg/spec
pj 6e85cac8b3 merge origin/master into llm-recording-and-analysis
both sides independently fixed the same three bugs, so each one had to pick a
winner rather than keep both implementations.

extractor encoding: master's recordableValue in worker.go wins over ours in
marshal.go, since master's is pinned by extractor_encoding_test.go and ours had
no tests. our error semantics stay: encodeExtractorValue still returns an error
instead of nil, so an extractor cannot vanish from the trace silently.

apply errors: only the residual generic branch takes master's unconfirmed copy,
where the device may have committed the action before the call failed. the
finer branches that know nothing was dispatched keep lastAction = nil, and our
actionSkipReason taxonomy stays alongside master's held/skippedVerification.

selector matching: our matchAttr with matchSelectorKind wins over master's
match, since ours also handles idPrefix. matchSelector now calls it, which git
did not flag as a conflict and left calling a function our side had deleted.

the ltl doc comment takes master's correction: an unbounded eventually that
never fires IS violated at run end.
2026-08-16 18:10:55 +05:30
..

@sanderling/spec

TypeScript spec API for sanderling, a property-based UI fuzzer for Android, iOS and web apps.

A spec exports properties (what the app must always or eventually do), extractors (structured state read off the UI), and action generators (what sanderling is allowed to do). The sanderling CLI evaluates the spec against a running app once per step.

npm install --save-dev @sanderling/spec

Getting started installs the CLI and runs a first spec. The spec language reference lists every primitive, and the case study walks a complete spec end to end.

The CLI bundles this package's TypeScript sources at run time, so keep the CLI and the package on the same release.