@struktoai/mirage-core/dist/accessor/postgres.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 { Accessor } from "./base.js";
/**
 * The session every connection opens: read only, and the settings a date or
 * time type's text depends on, pinned so a value spells the same whatever the
 * server's defaults. Mirrors `SESSION` in `mirage/accessor/postgres.py`.
 */
export const SESSION = {
    default_transaction_read_only: 'on',
    DateStyle: 'ISO',
    IntervalStyle: 'postgres',
    TimeZone: 'UTC',
};
/**
 * The date and time types a row keeps as the text Postgres sends, each with
 * its OID and its array's, the text holding what a millisecond `Date` cannot:
 * a microsecond, a BC or five-digit year, infinity, 24:00:00, an interval's
 * months. Mirrors `TEXT_TYPES` in `mirage/accessor/postgres.py`.
 */
export const TEXT_TYPES = {
    date: [1082, 1182],
    time: [1083, 1183],
    timetz: [1266, 1270],
    timestamp: [1114, 1115],
    timestamptz: [1184, 1185],
    interval: [1186, 1187],
};
/**
 * Type parsers, as pg-types and Neon's driver take them, that keep each of
 * `TEXT_TYPES` as its text, parse an array of it as `text[]` (OID 1009), and
 * leave every other type to `defaults`. Mirrors `read_as_text` in
 * `mirage/accessor/postgres.py`.
 */
export function readAsText(defaults) {
    const types = Object.values(TEXT_TYPES);
    const scalars = new Set(types.map(([oid]) => oid));
    const arrays = new Set(types.map(([, oid]) => oid));
    return {
        getTypeParser: (oid, format) => {
            if (scalars.has(oid))
                return (value) => value;
            return defaults.getTypeParser(arrays.has(oid) ? 1009 : oid, format);
        },
    };
}
export class PostgresAccessor extends Accessor {
    driver;
    config;
    constructor(driver, config) {
        super();
        this.driver = driver;
        this.config = config;
    }
    get store() {
        return this.driver;
    }
}
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