safe-access-ts/lib/bootstrap.js

Unleash the power of TypeScript to safely access, set, or delete deeply nested object properties. Bid adieu to 'Cannot read property of undefined' errors and embrace a world of defensive and robust code.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.safeDeleteProperty = exports.safeSetProperty = exports.safeGetProperty = void 0;
function isObject(value) {
    return value && typeof value === 'object' && !Array.isArray(value);
}
function safeGetProperty(obj, path, defaultValue) {
    var pathArray = Array.isArray(path) ? path : path.split('.').reduce(function (result, pathPart) {
        var match = pathPart.match(/([^\[]+)|(\[\d+\])/g); // Split on dots and array accessors
        if (match) {
            result.push.apply(result, match);
        }
        return result;
    }, []);
    var value = obj;
    for (var _i = 0, pathArray_1 = pathArray; _i < pathArray_1.length; _i++) {
        var key = pathArray_1[_i];
        if (isObject(value) || Array.isArray(value)) {
            // If key is an array accessor, remove brackets and convert to number
            if (/\[\d+\]/.test(key)) {
                key = Number(key.replace(/\[|\]/g, ''));
            }
            value = value[key];
        }
        else {
            return defaultValue;
        }
    }
    return value === undefined ? defaultValue : value;
}
exports.safeGetProperty = safeGetProperty;
function safeSetProperty(obj, path, value) {
    var pathArray = Array.isArray(path) ? path : path.split('.');
    var current = obj;
    for (var i = 0; i < pathArray.length; i++) {
        var key = pathArray[i];
        if (i < pathArray.length - 1) {
            if (!isObject(current[key]) && !Array.isArray(current[key])) {
                var nextKey = pathArray[i + 1];
                current[key] = isNaN(parseInt(nextKey)) ? {} : [];
            }
            current = current[key];
        }
        else {
            current[key] = value;
        }
    }
    return current;
}
exports.safeSetProperty = safeSetProperty;
function safeDeleteProperty(obj, path) {
    var pathArray = Array.isArray(path) ? path : path.split('.');
    var current = obj;
    for (var i = 0; i < pathArray.length; i++) {
        var key = pathArray[i];
        if (i < pathArray.length - 1) {
            if (!isObject(current[key]) && !Array.isArray(current[key])) {
                return;
            }
            current = current[key];
        }
        else {
            delete current[key];
        }
    }
    return current;
}
exports.safeDeleteProperty = safeDeleteProperty;