@rxap/xml-parser/src/lib/parse-value.js

Provides a set of decorators and services for parsing and serializing XML documents into TypeScript classes. It simplifies the process of mapping XML elements and attributes to class properties, handling data validation, and serializing objects back into

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseValue = parseValue;
/**
 * Parses a string and converts it into a specified type `T`.
 *
 * This function intelligently converts a string representation of various data types into its corresponding
 * JavaScript type. It handles boolean, null, undefined, numbers, strings, JSON arrays, and JSON objects.
 *
 * @param {string} value - The string to be parsed.
 * @returns {T} - The parsed value converted into type `T`. The specific type depends on the content of the input string:
 * - Returns a boolean if the input is 'true' or 'false'.
 * - Returns `null` if the input is 'null'.
 * - Returns `undefined` if the input is 'undefined'.
 * - Returns a number if the input is a valid number.
 * - Returns a string if the input is enclosed in double quotes ("") or single quotes ('').
 * - Attempts to return a parsed JSON object or array if the input is a valid JSON string enclosed in curly braces ({})
 * or square brackets ([]).
 * - Returns the original string for all other cases.
 *
 * Note: If JSON parsing fails, it logs an error message and returns the input as a string.
 */
function parseValue(value) {
    if (value === 'true' || value === 'false') {
        return (value === 'true');
    }
    if (value === 'null') {
        return null;
    }
    if (value === 'undefined') {
        return undefined;
    }
    if (value === '') {
        return value;
    }
    if (!isNaN(Number(value))) {
        return Number(value);
    }
    // test if string
    if (value[0] === '"' && value[value.length - 1] === '"') {
        return value.substr(1, value.length - 2);
    }
    else if (value[0] === '\'' && value[value.length - 1] === '\'') {
        return value.substr(1, value.length - 2);
    }
    else if ((value[0] === '[' && value[value.length - 1] === ']') ||
        (value[0] === '{' && value[value.length - 1] === '}')) {
        try {
            return JSON.parse(value);
        }
        catch (e) {
            console.error('Could not parse value: ' + e.message, value);
        }
    }
    return value;
}
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