express-image-validator/dist/utils/isSvg.js

Validator of various image parameters in Express.js applications

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isSvg = isSvg;
const fast_xml_parser_1 = require("fast-xml-parser");
/**
 * Copyright (c) 2025 [sindresorhus](https://github.com/sindresorhus).
 *
 * Licensed under the MIT License.
 * @see https://github.com/sindresorhus/is-svg
 */
function isSvg(input) {
    const xml = input.toString().trim();
    if (xml === undefined || xml === null) {
        return false;
    }
    if (xml.length === 0) {
        return false;
    }
    // Has to be `!==` as it can also return an object with error info.
    if (fast_xml_parser_1.XMLValidator.validate(xml) !== true) {
        return false;
    }
    let jsonObject;
    const parser = new fast_xml_parser_1.XMLParser();
    try {
        jsonObject = parser.parse(input);
    }
    catch {
        return false;
    }
    if (!jsonObject) {
        return false;
    }
    if (!('svg' in jsonObject)) {
        return false;
    }
    return true;
}