@phren/cli/dist/fanout/watchdog.js

Knowledge layer for AI agents - CLI, MCP server, and data layer

function canonical(value) {
    if (Array.isArray(value))
        return value.map(canonical);
    if (value && typeof value === "object")
        return Object.fromEntries(Object.entries(value).sort(([a], [b]) => a.localeCompare(b)).map(([k, v]) => [k, canonical(v)]));
    return value;
}
export class LoopWatchdog {
    calls = [];
    observe(event) {
        if (event.type !== "tool_use")
            return;
        const part = event.part;
        this.calls.push((part?.tool ?? "") + JSON.stringify(canonical(part?.state?.input ?? {})));
        if (this.calls.length > 60)
            this.calls.shift();
    }
    reason() {
        const distinct = new Set(this.calls).size;
        return this.calls.length === 60 && distinct <= 2 ? `tool loop: last 60 calls had ${distinct} distinct inputs` : undefined;
    }
}
export function stderrRefusal(tail) {
    const matches = [...tail.matchAll(/permission requested:\s*([^\s(]+)\s*\(([^\n]*?)\);\s*auto-rejecting/g)];
    const last = matches.at(-1);
    return last ? { type: last[1], pattern: last[2], message: `blocked: ${last[1]} ${last[2]}` } : undefined;
}