constructor()

in settings/file-settings.js [21:62]

• 29 lines of code
• 8 McCabe index (conditional complexity)

    constructor(settingsPath, readOnly, parentSettings) {
        if (utils.isNullOrUndefined(settingsPath)) {
            throw new Error("settingsPath must be supplied.");
        }

        /** @type {*} */
        let initialSettings;

        if (!fs.existsSync(settingsPath)) {
            if (readOnly === true) {
                throw new Error(`Settings file, ${settingsPath}, doesn't exist.`);
            }

            initialSettings = Object.create(null);
            fs.writeFileSync(settingsPath, JSON.stringify(initialSettings), { encoding: "utf8" });

        } else {
            initialSettings = JSON.parse(fs.readFileSync(settingsPath, { encoding: "utf8" }));

            if (utils.isNullOrUndefined(readOnly) || readOnly === false) {
                try {
                    fs.appendFileSync(settingsPath, "", { encoding: "utf8" });
                    readOnly = false;
                } catch (err) {
                    if (readOnly === false) {
                        throw new Error(`No permission to write settings file, {settingsPath}. error: {err}`);
                    } else {
                        readOnly = true;
                    }
                }
            }
        }

        super(initialSettings, readOnly, parentSettings);

        /**
         * @private
         * @readonly
         * @type {string}
         */
        this.settingsPath = settingsPath;
    }