Changelog

Source: NEWS.md

tters 0.1.1

Badge-green maintenance release of the tters R binding (no engine changes).

• ERROR fixed: the bare read_expanded_data() calls in the te_datastore contract test now resolve via TrialEmulation:: — R CMD check runs testthat with TrialEmulation installed-but-not-attached, which is why every non-WASM r-universe platform job previously failed (#21).
• WARNING fixed: methods and utils are declared in Imports, with matching importFrom() for methods, bit64::integer64 (declaration only — the exact int64 round-trip is untouched), and utils::globalVariables.
• NOTE fixed: globalVariables(c(":=", "id")) for the data.table NSE symbols.

R CMD check on the built tarball: 0 errors, 0 warnings, 0 notes.

tters 0.1.0

First public release of tters, the verified Rust + Polars backend for the data-expansion stage of sequential target trial emulation, bit-exact against the R TrialEmulation Oracle (see report/certificate.md).

• Sequential trial expansion (ITT and per-protocol) with dtype-exact, deterministic output.
• Pre-computed IPW application and in-Rust weight fitting (weights-fit).
• In-memory data.frame round-trip, including exact bit64::integer64 columns.
• te_datastore companion backend for upstream TrialEmulation pipelines.