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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
* Error class with specific backup-related error causes.
*
* Can be serialized and deserialized across a worker boundary using
* the BasePromiseWorker and PromiseWorker machinery in this codebase.
*
* @see PromiseWorker.mjs
* @see PromiseWorker.sys.mjs
*/
export class BackupError extends Error {
name = "BackupError";
/**
* @param {string} message
* Error message
* @param {number} cause
* Error cause code from backup-constants.mjs:ERRORS
*/
constructor(message, cause) {
super(message, { cause });
}
/**
* @typedef {object} SerializedBackupError
* @property {'BackupError'} exn
* Exception name for PromiseWorker serialization
* @property {string} message
* Error message
* @property {number} cause
* Error cause code from backup-constants.mjs:ERRORS
* @property {string} stack
* Stack trace of the error
*/
/**
* Used by PromiseWorker.mjs from within a web worker in order to
* serialize this error for later reconstruction in the main process.
*
* @returns {SerializedBackupError}
* @see PromiseWorker.mjs
*/
toMsg() {
return {
exn: BackupError.name,
message: this.message,
cause: this.cause,
stack: this.stack,
};
}
/**
* @param {SerializedBackupError} serialized
* Worker error serialized by PromiseWorker
* @returns {BackupError}
*/
static fromMsg(serialized) {
let error = new BackupError(serialized.message, serialized.cause);
error.stack = serialized.stack;
return error;
}
}
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