node-json-db/dist/adapter/file/FileAdapter.js

Database using JSON file as storage for Node.JS

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FileAdapter = void 0;
const promises_1 = require("fs/promises");
const path = require("path");
class FileAdapter {
    filename;
    fsync;
    constructor(filename, fsync) {
        this.filename = filename;
        this.fsync = fsync;
    }
    async readAsync() {
        try {
            return await (0, promises_1.readFile)(this.filename, {
                encoding: 'utf-8'
            });
        }
        catch (e) {
            if (e.code === 'ENOENT') {
                return null;
            }
            throw e;
        }
    }
    async writeAsync(data) {
        let fd = null;
        try {
            fd = await (0, promises_1.open)(this.filename, 'w');
        }
        catch (e) {
            if (e.code !== 'ENOENT') {
                throw e;
            }
            const basepath = path.dirname(this.filename);
            await (0, promises_1.mkdir)(basepath, { recursive: true });
            fd = await (0, promises_1.open)(this.filename, 'w');
        }
        try {
            await fd.writeFile(data, {
                encoding: 'utf-8'
            });
            if (this.fsync) {
                await fd.sync();
            }
        }
        finally {
            await fd.close();
        }
    }
}
exports.FileAdapter = FileAdapter;
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