sql-ddl-to-json-schema/lib/shared/utils.js

Parse and convert SQL DDL statements to a JSON Schema.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.setProperty = exports.isDefined = exports.isObject = exports.isFunction = exports.isNumber = exports.isString = exports.isArray = exports.filterNullValues = exports.trimString = exports.stringArrayToMapping = void 0;
/**
 * Transform an array of strings into an object, optionally
 * transforming values of keys and values.
 *
 * @example
 * Input: ['VARIABLE', 'VAR'], k => '_' + k
 * Output: { _VARIABLE: 'VARIABLE', _VAR: 'VAR' }
 *
 * @param array Function that returns string.
 * @param transformKey Function that transforms the object key.
 * @param transformValue Function that transforms the object value.
 */
function stringArrayToMapping(array = [], transformKey = (k) => k, transformValue = (v) => v) {
    return array.reduce((obj, elem) => {
        obj[transformKey(elem)] = transformValue(elem);
        return obj;
    }, {});
}
exports.stringArrayToMapping = stringArrayToMapping;
/**
 * Trim ends of string from chars given.
 * Default chars are whitespaces and tabs.
 *
 * @param string String to be trimmed.
 * @param additional Additional character list to trim.
 * @param chars Defult character list to trim.
 */
function trimString(string, additional = '', chars = '\\s\\0\\x0B') {
    return string.replace(new RegExp(`^[${additional + chars}]*|[${additional + chars}]*$`, 'gim'), '');
}
exports.trimString = trimString;
/**
 * Return the same instance of object without
 * the properties containing null values.
 *
 * @param obj Object to be filtered.
 */
function filterNullValues(obj) {
    Object.getOwnPropertyNames(obj).forEach((name) => {
        if (obj[name] === null) {
            delete obj[name];
        }
    });
    return obj;
}
exports.filterNullValues = filterNullValues;
/**
 * Test whether given value is array.
 *
 * @param value Value to be tested.
 */
function isArray(value) {
    return Array.isArray(value);
}
exports.isArray = isArray;
/**
 * Test whether given value is string.
 *
 * @param value Value to be tested.
 */
function isString(value) {
    return typeof value === 'string';
}
exports.isString = isString;
/**
 * Test whether given value is number.
 *
 * @param value Value to be tested.
 */
function isNumber(value) {
    return typeof value === 'number';
}
exports.isNumber = isNumber;
/**
 * Test whether given value is function.
 *
 * @param value Value to be tested.
 */
function isFunction(value) {
    return typeof value === 'function';
}
exports.isFunction = isFunction;
/**
 * Test whether given value is object.
 *
 * @param value Value to be tested.
 */
function isObject(value) {
    return value !== null && typeof value === 'object';
}
exports.isObject = isObject;
/**
 * Test whether given value is defined and not null.
 *
 * @param value Value to be tested.
 */
function isDefined(value) {
    return typeof value !== 'undefined' && !(value === null);
}
exports.isDefined = isDefined;
/**
 * Set an enumarable, configurable and writable property of given target object.
 *
 * @param target Target object to have property set on.
 * @param key Property key.
 * @param value Property value.
 */
function setProperty(target, key, value) {
    if (typeof value === 'function') {
        return;
    }
    Object.defineProperty(target, key, {
        value,
        enumerable: true,
        configurable: true,
        writable: true,
    });
}
exports.setProperty = setProperty;