earendil-works/pi · error · TypeError

repetitions must be a positive integer.

Error message

repetitions must be a positive integer.

What it means

Error "repetitions must be a positive integer." thrown in earendil-works/pi.

Source

Thrown at packages/evals/src/vitest-evals/harness-table.ts:126

}

export function deriveEvalGroupKey(input: unknown, repetition: number): string {
	return JSON.stringify([deriveInputKey(input), repetition]);
}

function validateOptions<TInput, TOutput extends JsonValue | undefined>(
	evalSet: string,
	baseline: Harness<TInput, TOutput>,
	candidates: readonly Harness<TInput, TOutput>[],
	repetitions: number,
): void {
	if (!evalSet.trim()) throw new TypeError("evalSet must not be empty.");
	if (candidates.length === 0) throw new TypeError("At least one candidate harness is required.");
	const harnesses = [baseline, ...candidates];
	const names = new Set(harnesses.map((harness) => harness.name));
	if (names.size !== harnesses.length) throw new TypeError("Harness names must be unique within an eval set.");
	if (!Number.isSafeInteger(repetitions) || repetitions < 1) {
		throw new TypeError("repetitions must be a positive integer.");
	}
}

function withIterationArtifact<TInput, TOutput extends JsonValue | undefined>(
	harness: Harness<TInput, TOutput>,
	plan: EvalHarnessIterationPlan,
): Harness<TInput, TOutput> {
	return {
		name: harness.name,
		async run(input, context) {
			const groupKey = deriveEvalGroupKey(input, plan.repetition);
			const artifact: EvalHarnessIterationArtifact = { ...plan, groupKey };
			context.setArtifact(EVAL_HARNESS_ITERATION_ARTIFACT, artifact);
			const attachIterationArtifact = <TRun extends HarnessRun>(run: TRun): TRun => {
				run.artifacts = { ...context.artifacts, ...run.artifacts, [EVAL_HARNESS_ITERATION_ARTIFACT]: artifact };
				return run;
			};
			try {

View on GitHub (pinned to 4af9d21d3b)

When it happens

Trigger: Thrown at packages/evals/src/vitest-evals/harness-table.ts:126 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of earendil-works/pi@4af9d21d3b (2026-08-24). Data as JSON: /api/errors/00d7c501682970d4. Report an issue: GitHub.