nextjs-redis-cache/dist/index.js

A Redis Cache for Next.js Framework that supports expiration after a given time and also compress the data in memory.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.cache = void 0;
const zlib_1 = __importDefault(require("zlib"));
const util_1 = __importDefault(require("util"));
class RedisCache {
    constructor() {
        this.exists = (client, key) => __awaiter(this, void 0, void 0, function* () {
            try {
                const res = yield client.exists(key);
                if (res.toString() === '0')
                    return false;
                return true;
            }
            catch (err) {
                console.error(err.message);
                return false;
            }
        });
        this.delete = (client, keys) => __awaiter(this, void 0, void 0, function* () {
            try {
                const res = yield client.del(keys);
                return res;
            }
            catch (err) {
                console.error(err.message);
            }
        });
        this.get = (client, key) => __awaiter(this, void 0, void 0, function* () {
            try {
                const res = yield client.get(key);
                if (!res) {
                    // return null
                    return res;
                }
                const buf = Buffer.from(res, 'base64');
                const inflate = util_1.default.promisify(zlib_1.default.inflate);
                const decompressedData = yield inflate(buf);
                const result = JSON.parse(decompressedData.toString());
                return result;
            }
            catch (err) {
                console.log(err.message);
            }
        });
        this.set = (client, key, payload, options = {}) => __awaiter(this, void 0, void 0, function* () {
            try {
                const jsonData = JSON.stringify(payload);
                const deflate = util_1.default.promisify(zlib_1.default.deflate);
                const compressedData = (yield deflate(jsonData)).toString('base64');
                const res = yield client.set(key, compressedData);
                if (res !== 'OK')
                    return false;
                if (options.expireIn) {
                    console.log('time');
                    yield client.expire(key, options.expireIn);
                }
                return true;
            }
            catch (err) {
                console.error(err.message);
                return false;
            }
        });
    }
}
exports.cache = new RedisCache();