@struktoai/mirage-core/dist/errors/classify.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. =========
import { ERRNO_ARMS } from "./constants.js";
import { CommandTimeoutError } from "./types.js";
/**
 * Name the condition an error reports, if the vocabulary names one.
 *
 * The one classifier: every boundary (the fuse-native adapter, the
 * quickjs wasi shim, the monty encoders, pyodide's errno lookup) calls
 * this and then renders the condition through its own number table.
 * Keys on the stamped `code` (python's twin keys on exception class),
 * plus the registry's unstamped no-mount refusal, which is a miss.
 * Null means "no named condition" and the caller keeps its own
 * fallback, because a code outside the vocabulary is a passthrough,
 * not a translation.
 */
export function classify(err) {
    if (err === null || typeof err !== 'object')
        return null;
    if (err.noMount === true)
        return 'ENOENT';
    const code = err.code;
    if (typeof code !== 'string')
        return null;
    return ERRNO_ARMS[code] ?? null;
}
// What a listing reports against the one entry whose stat failed, and walks
// past: GNU's ls and find carry on from any failed stat below an operand,
// whatever the errno, so a dropped connection or a 5xx on a mount whose stat
// is a request costs that entry alone. Only what ends the whole command
// still ends it: the line's abort and its timeout. Mirrors Python's
// is_entry_error.
export function isEntryError(err) {
    if (err instanceof CommandTimeoutError)
        return false;
    return err?.name !== 'AbortError';
}
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