@mbc-cqrs-serverless/core/dist/helpers/object.js

CQRS and event base core

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isObject = isObject;
exports.mergeDeep = mergeDeep;
exports.objectBytes = objectBytes;
exports.pickKeys = pickKeys;
exports.omitKeys = omitKeys;
function isObject(item) {
    return !!item && typeof item === 'object' && !Array.isArray(item);
}
// deep merge objects without mutating the input parameters
function mergeDeep(target, ...sources) {
    if (!sources.length)
        return target;
    const source = sources.shift();
    if (isObject(target) && isObject(source)) {
        for (const key in source) {
            if (isObject(source[key])) {
                if (!target[key])
                    Object.assign(target, { [key]: {} });
                mergeDeep(target[key], source[key]);
            }
            else {
                Object.assign(target, { [key]: source[key] });
            }
        }
    }
    return mergeDeep(target, ...sources);
}
// calculate the object bytes
function objectBytes(obj) {
    return Buffer.byteLength(JSON.stringify(obj));
}
function pickKeys(obj, keys) {
    const result = {};
    for (const key of keys) {
        if (key in obj) {
            result[key] = obj[key];
        }
    }
    return result;
}
function omitKeys(obj, keys) {
    const result = {};
    for (const key in obj) {
        if (!keys.includes(key)) {
            result[key] = obj[key];
        }
    }
    return result;
}
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