JuliusBrussee/caveman · error · Error
canonical span fixture is empty
Error message
canonical span fixture is empty
What it means
Error "canonical span fixture is empty" thrown in JuliusBrussee/caveman.
Source
Thrown at packages/shared/contracts/scripts/validate-continuous-improvement.mjs:334
// The guard grader exists exactly when there is a perturbed case to catch a
// candidate on; a required grader with no case behind it is decoration.
const perturbed = dataset.cases.some((entry) => entry.perturbation !== "none");
if (perturbed !== item.eval_pack.graders.includes("guard_respected")) {
throw new Error(`${where} guard_respected grader ${perturbed ? "missing for" : "declared without"} perturbed dataset cases`);
}
for (const proof of item.replay.trial_proofs) {
if (!datasetCaseIDs.has(proof.dataset_case_id)) throw new Error(`${where} replay trial ${proof.id} replays a case outside the composed dataset`);
for (const arm of [proof.baseline, proof.candidate]) {
const graders = arm.grader_results.map((grader) => grader.grader).sort();
const required = [...item.eval_pack.graders].sort();
if (graders.join(",") !== required.join(",")) {
throw new Error(`${where} replay trial ${proof.id} graded ${graders.join(",")}, want exactly ${required.join(",")}`);
}
}
}
}
}
if (!Array.isArray(spans) || spans.length === 0) throw new Error("canonical span fixture is empty");
for (const [index, span] of spans.entries()) {
if (!validateSpan(span)) throw new Error(`canonical span ${index}: ${ajv.errorsText(validateSpan.errors)}`);
}
if (relationshipCount === 0) throw new Error("no theme relationship reached the shared-analysis-unit threshold in any fixture");
if (motifCount === 0) throw new Error("no workflow motif recurred across two variants of one task family in any fixture");
console.log(`validated ${reports.length} generated improvement report(s), ${relationshipCount} theme relationship(s), ${motifCount} workflow motif(s) and ${spans.length} canonical spans`);
View on GitHub (pinned to 27d5a3981a)
Solutions
- Provide at least one canonical span fixture.
When it happens
Trigger: Thrown at packages/shared/contracts/scripts/validate-continuous-improvement.mjs:334 when the library encounters an invalid state.
Common situations: See trigger scenarios.
AI-assisted analysis of JuliusBrussee/caveman@27d5a3981a (2026-08-15).
Data as JSON: /api/errors/d3b09bcdb809d0ce.
Report an issue: GitHub.