@struktoai/mirage-core/dist/cache/file/mixin.js

A Unified Virtual Filesystem For AI Agents

// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
/**
 * Max bytes a streamed read may buffer to fill the cache.
 *
 * null (the default) caps each fill at 8 MiB or `cacheLimit`. An explicit
 * value keeps larger streams out of the cache and may not exceed the
 * cache's intended capacity. Mirrors Python `drain_budget`.
 */
export function drainBudget(cache) {
    validateMaxDrainBytes(cache.cacheLimit, cache.maxDrainBytes);
    return cache.maxDrainBytes ?? Math.min(cache.cacheLimit, 8 * 1024 * 1024);
}
export function validateMaxDrainBytes(cacheLimit, maxDrainBytes) {
    if (!Number.isSafeInteger(cacheLimit) || cacheLimit < 0) {
        throw new RangeError('cacheLimit must be a non-negative safe integer');
    }
    if (maxDrainBytes === null)
        return;
    if (!Number.isSafeInteger(maxDrainBytes) || maxDrainBytes < 0) {
        throw new RangeError('maxDrainBytes must be a non-negative safe integer');
    }
    if (maxDrainBytes > cacheLimit) {
        throw new RangeError('maxDrainBytes cannot exceed cacheLimit');
    }
}
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