Zinc Next: parity status
The parity gate of the plan (ZN-155): Zinc Next does what the prototype did. Measured on 2026-10-11 by tools/parity-audit,
which re-runs the three audits of docs/reports/parity/ as one script (85 s) and writes docs/reports/parity/gate.md.
Result
| audit | PASS | PARTIAL | MISSING | other |
|---|---|---|---|---|
| 01, table A: language, standard library, web platform (each snippet on the prototype and on zinc run) | 315 | 3 | 0 | 8 snippets the prototype itself refuses |
| 01, table C: diagnostics | 44 | 3 | 0 | // @ts-ignore: decision D88 |
| 01, table D: the prototype’s CLI | 29 | 0 | 0 | no JIT (D13), no JavaScript back end; esp32 runs and cross builds wait for the cross-platform pass |
| 01, table E: host modules and std packages | 29 | 0 | 0 | |
| 01, table F: tests/conformance against the frozen outputs | 60 | 1 | 0 | |
| 02: example entries (tests/examples.lst, all run by tests/t2/examples_all.sh) | 74 | 0 | 0 | |
| 03: plugins (listed, each module imports) | 35 | 0 | 0 |
No prototype feature is missing and no example is blocked. The PARTIAL rows are differences in output, listed in gate.md:
p.then(x => promise) does not flatten the promise it returns (async/await does), console.log(-0) prints -0 where the
prototype printed 0, an i64 near 2^53 rounds differently, tests/conformance/scroll_physics.tsx prints nothing, and three
programs the prototype refuses run here (regular expression literals, await in a loop condition, an unused comma operand).
Reproduce
cmake -S . -B build -DCMAKE_BUILD_TYPE=Release && tools/build zinc
tools/parity-audit # the three audits; exit 1 on any MISSING; writes docs/reports/parity/gate.md
tools/parity-audit --only A,C --out /tmp/a # some sections only
tools/examples-status --check # the example entries one by one (T1: tests/t1/examples_all.sh)
tests/run --tier t1 --only conformance # the frozen conformance outputsThe prototype side needs Node 24 (node compiler/src/cli.ts run main.ts --target sim is the oracle of table A).