@juspay/neurolink/dist/proxy/proxyTokenUsage.js

The pipe layer of an AI nervous system: one interface connecting provider neurons to your application, across three inference types — generate, stream and decide. `decide` returns typed, calibrated judgements from a non-generative model (~400ms, ~$0.00002

/** Convert proxy wire usage into disjoint billing buckets. Codex input already
 * includes cache tokens; reasoning is included in output for both providers.
 * OpenAI's documented formula subtracts both cached_tokens and cache_write_tokens:
 * https://developers.openai.com/api/docs/guides/prompt-caching#monitor-cache-performance
 */
export function proxyTokenUsage(usage) {
    const cached = usage.cacheReadTokens + usage.cacheCreationTokens;
    const input = usage.inputIncludesCachedTokens
        ? Math.max(0, usage.inputTokens - cached)
        : usage.inputTokens;
    return {
        input,
        output: usage.outputTokens,
        total: usage.inputIncludesCachedTokens
            ? usage.inputTokens + usage.outputTokens
            : input + cached + usage.outputTokens,
        cacheReadTokens: usage.cacheReadTokens,
        cacheCreationTokens: usage.cacheCreationTokens,
        // Spread only when present so every existing caller's result keeps its
        // exact old shape (no new `undefined`-valued key to trip deep-equal checks).
        ...(usage.cacheCreation1hTokens !== undefined
            ? { cacheCreation1hTokens: usage.cacheCreation1hTokens }
            : {}),
        reasoning: usage.reasoningTokens,
    };
}
/**
 * Read Anthropic's `usage.cache_creation.ephemeral_1h_input_tokens` — the
 * 1-hour-TTL share of `cache_creation_input_tokens` — from an untyped usage
 * object. Returns undefined when the breakdown is absent (older replies, or a
 * request that wrote no 1h breakpoint), so callers leave the field unset and
 * price exactly as before.
 */
export function readCacheCreation1hTokens(usage) {
    if (typeof usage !== "object" || usage === null) {
        return undefined;
    }
    const breakdown = usage.cache_creation;
    if (typeof breakdown !== "object" || breakdown === null) {
        return undefined;
    }
    const raw = breakdown
        .ephemeral_1h_input_tokens;
    return typeof raw === "number" && Number.isFinite(raw) && raw >= 0
        ? raw
        : undefined;
}
/**
 * Spread target for a usage literal: the key exists only when a 1h count was
 * observed, so every payload without one keeps its exact old shape.
 */
export function oneHourCacheWriteFields(count) {
    return count === undefined ? {} : { cacheCreation1hTokens: count };
}