react-native-ibm-mobilefirst-jsonstore/js/Utils.js

React Native SDK for IBM JSONStore. Works with IBM Mobile First

/* Licensed Materials - Property of IBM
 * 5725-I43 (C) Copyright IBM Corp. 2018. All Rights Reserved.
 * US Government Users Restricted Rights - Use, duplication or
 * disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */

/* author - Yash Soni | yashsoni21@in.ibm.com */

/**
 * @ignore
 */
const _mandatoryParam = function(parameterName) {
    throw new Error('Error: Missing parameter ' + parameterName);
};


/**
 * @ignore
 */
const _checkParamClassType = function(parameter, classType) {
    // this function checks class types like Array, JsonStoreQuery, JsonStoreQueryParts
    if (parameter instanceof classType == false) {
        throw new Error(`${parameter} is not an instance of class ${classType}`);
    }
};

/**
 * @ignore
 */
const _checkParamArrayType = function(parameter, classType) {
    // this function checks whether the object passed is an Array and that every item
    // in the array is of the specified class type. 
    if (parameter instanceof Array == false) {
        throw new Error(`${parameter} is not an instance of Array`);
        return; 
    }
    for (var p in parameter) {
        if (parameter[p] instanceof classType == false) {
            throw new Error(`${parameter[p]} is not an instance of class ${classType}`);
            return; 
        }
    }
};

/**
 * @ignore
 */
const _checkParamType = function(parameter, type) {
    // this function checks native types like string, boolean, number
    if (typeof parameter !== type) {
        throw new Error(`${parameter} is not of type ${type}`);
    }
};

/**
 * @ignore
 */
const _isNativeType = function(value) {
    if (typeof value !== 'boolean' && typeof value !== 'string' && typeof value !== 'number') {
        return false;
    }
    return true;
};

/**
 * @ignore
 */
const _checkIfNativeType = function(value) {
    if (!_isNativeType(value)) {
        throw new Error(`${value} is not of either type in ['boolean', 'string', 'number']`);
    }
}

/**
 * @ignore
 */
const ParamTypes = {
    STRING: 'string',
    NUMBER: 'number',
    BOOLEAN: 'boolean'
}
export { _mandatoryParam, _checkParamClassType, _checkParamType, ParamTypes, _checkIfNativeType, _checkParamArrayType }