parseProperties: function()

in legacy/javascript/src/config_checker.js [33:68]
31 lines of code
6 McCabe index (conditional complexity)

    parseProperties: function (properties_json) {
        let properties;
        let properties_abs_path = path.resolve(properties_json);

        if (!fs.existsSync(properties_json)) {
            throw new Error(`File ${properties_json} not found`);
        }

        try {
            let properties_in_json = fs.readFileSync(properties_abs_path);
            properties = JSON.parse(properties_in_json);
        } catch (err) {
            if (err instanceof SyntaxError) {
                throw new Error(`${properties_json} does not follow JSON syntax`);
            } else {
                throw err;
            }
        }

        if (!('methodProperties' in properties)) {
            throw new Error(`The methodProperties property is missing in ${properties_json}`);
        } else {
            var missingMethod = properties.methodProperties.find(
                (prop) => !('methodName', 'flagType', 'argumentIndex' in prop),
            );

            if (missingMethod != null) {
                let requiredKeys = ['methodName', 'flagType', 'argumentIndex'];
                let missingKey = requiredKeys.find((key) => !(key in missingMethod));
                missingMethod = JSON.stringify(missingMethod);
                throw new Error(`${missingMethod} in ${properties_json} doesn't have '${missingKey}'`);
            }
        }

        return properties;
    },