nodejs-file-utils/dist/utils/fileStore.js

File Read and Write Apis with Cached content in NodeJs

import { __awaiter, __generator } from "tslib";
import { cloneDeep } from "lodash";
import { normalize } from "path";
var readPromises = {};
var dataMap = {};
export var readFileStore = function (path, reader, force) {
    if (force === void 0) { force = false; }
    return __awaiter(void 0, void 0, void 0, function () {
        var normalizedPath, data, e_1;
        return __generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    normalizedPath = normalize(path);
                    if (!(!dataMap[normalizedPath] || force)) return [3 /*break*/, 4];
                    if (!readPromises[normalizedPath] || force) {
                        readPromises[normalizedPath] = reader(normalizedPath);
                    }
                    _a.label = 1;
                case 1:
                    _a.trys.push([1, 3, , 4]);
                    return [4 /*yield*/, readPromises[normalizedPath]];
                case 2:
                    data = _a.sent();
                    dataMap[normalizedPath] = data;
                    return [3 /*break*/, 4];
                case 3:
                    e_1 = _a.sent();
                    delete readPromises[normalizedPath];
                    throw e_1;
                case 4: return [2 /*return*/, cloneDeep(dataMap[normalizedPath])];
            }
        });
    });
};
export var updateFileStore = function (path, data) {
    var normalizedPath = normalize(path);
    dataMap[normalizedPath] = cloneDeep(data);
};
export var saveFileStore = function (path, writer) { return __awaiter(void 0, void 0, void 0, function () {
    var normalizedPath;
    return __generator(this, function (_a) {
        switch (_a.label) {
            case 0:
                normalizedPath = normalize(path);
                if (!dataMap[normalizedPath]) return [3 /*break*/, 2];
                return [4 /*yield*/, writer(normalizedPath, dataMap[normalizedPath])];
            case 1:
                _a.sent();
                _a.label = 2;
            case 2: return [2 /*return*/];
        }
    });
}); };