Hmbown/CodeWhale · error · Error

Invalid pet recording.

Error message

Invalid pet recording.

What it means

PetWorld.fromRecording rehydrates a world from a serialized recording object. It first requires a truthy object with petReplayVersion of 1 or 2 and array-valued tape and interactions fields. If the value is null, not an object, has an unknown petReplayVersion, or lacks tape/interactions arrays, the recording cannot be restored and this error is thrown.

Solutions

1. Check the recording object before calling: it must be truthy, have petReplayVersion 1 or 2, and array tape and interactions.
2. Re-export the recording with recordingChunk() from a live world if the file predates the current schema.
3. Verify the file was fully written (all chunks consumed) before parsing/restoring.
4. Confirm you are passing the recording envelope, not a checkpoint or chunk fragment.

Example fix

// before
const world = PetWorld.fromRecording(points, JSON.parse(raw));
// after
const r = JSON.parse(raw);
if (!r || ![1, 2].includes(r.petReplayVersion) || !Array.isArray(r.tape) || !Array.isArray(r.interactions))
  throw new Error('Corrupt pet recording file');
const world = PetWorld.fromRecording(points, r);

function isPetRecordingEnvelope(r) {
  return !!r && typeof r === 'object' &&
    [1, 2].includes(r.petReplayVersion) &&
    Array.isArray(r.tape) && Array.isArray(r.interactions);
}

const isRecording = (v) =>
  typeof v === 'object' && v !== null &&
  (v.petReplayVersion === 1 || v.petReplayVersion === 2) &&
  Array.isArray(v.tape) && Array.isArray(v.interactions);

let world;
try {
  world = PetWorld.fromRecording(points, parsed);
} catch (err) {
  if (err.message === 'Invalid pet recording.')
    throw new Error(`Recording file corrupt or unsupported: ${path}`);
  throw err;
}

When it happens

Trigger: Calling `PetWorld.fromRecording(points, value)` where value is null/undefined, value.petReplayVersion is missing or not 1 or 2, value.tape is not an array, or value.interactions is not an array.

Common situations: Loading a pet recording file that was truncated or corrupted, feeding JSON parsed from a non-pet file, passing a legacy recording with a petReplayVersion newer than the running binary supports, passing the wrong object (e.g. a checkpoint instead of the recording envelope).

Understand the failure class

Background: Schema validation failed / invalid input schema: payload rejected because its shape doesn't match the expected schema — this error's family across 28 libraries.

Related errors

• Invalid pet checkpoint.
• Invalid pet checkpoint.
• Invalid pet checkpoint.
• Invalid pet interaction.
• Invalid pet particle checkpoint.

AI-assisted analysis of Hmbown/CodeWhale@73e0f67d83 (2026-09-22). Data as JSON: /api/errors/f3b8aa2a8bc2e01a. Report an issue: GitHub.

Appendix: source

Thrown at crates/tui/src/tui/pet_watch/pet-native.js:248

            random: this.random.state(), behaviour: this.behaviour, until: this.until,
            targetX: this.targetX, targetY: this.targetY, x: this.x, y: this.y, flip: this.flip, lit: this.lit,
            lastActivity: this.lastActivity, addressedAt: Number.isFinite(this.addressedAt) ? this.addressedAt : null,
            waitSince: this.waitSince, food: this.food, members: [...this.members.values()], lastStill: this.lastStill,
            frame: this.frame, voices: this.voices });
    }
    recording(withCheckpoint = true, completed = false) {
        const tapeEnd = completed ? this.bucketIndex + 1 : this.tapeLog.length;
        const inputEnd = completed ? this.interactionIndex : this.interactionLog.length;
        const history = this.historyDigest(tapeEnd, inputEnd);
        return { petReplayVersion: this.segmented ? 2 : 1, expressionVersion: this.sim.expressionVersion,
            tape: this.tapeLog.slice(0, tapeEnd), interactions: this.interactionLog.slice(0, inputEnd).map(e => ({ ...e })),
            ...(this.origin ? { start: { ...structuredClone(this.origin), hasTelemetry: this.hasTelemetry, history } } : {}),
            ...(withCheckpoint ? { checkpoint: { ...this.checkpoint(), history } } : {}) };
    }
    static fromRecording(points, value) {
        const r = value;
        if (!r || ![1, 2].includes(r.petReplayVersion) || !Array.isArray(r.tape) || !Array.isArray(r.interactions))
            throw new Error('Invalid pet recording.');
        const version = r.expressionVersion === undefined ? 1 : r.expressionVersion;
        if (![1, 2].includes(version))
            throw new Error('Unsupported pet expression version.');
        if (r.checkpoint !== undefined && !r.checkpoint || r.start !== undefined && !r.start)
            throw new Error('Invalid pet checkpoint.');
        for (const c of [r.start, r.checkpoint])
            if (c && (c.sim?.expressionVersion ?? 1) !== version)
                throw new Error('Pet expression version does not match its checkpoint.');
        if (r.petReplayVersion === 1 && (r.start || r.checkpoint && r.checkpoint.petCheckpointVersion !== 1))
            throw new Error('Invalid legacy pet recording.');
        if (r.petReplayVersion === 2 && (!r.start || r.start.petCheckpointVersion !== 2 || r.start.historyStart !== r.start.tick))
            throw new Error('The recording segment is missing its starting checkpoint.');
        const first = r.start && PetWorld.restore(points, r.tape, r.interactions, r.start);
        const world = r.checkpoint ? PetWorld.restore(points, r.tape, r.interactions, r.checkpoint) : first ?? new PetWorld(points, r.tape, r.interactions, version);
        if (first) {
            if (!world.segmented || world.tick < first.tick || r.checkpoint && r.checkpoint.historyStart !== first.tick)
                throw new Error('Pet segment checkpoints do not agree.');
            world.origin = first.checkpoint();

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