fineui/packages/fineui/src/core/platform/web/jquery/jquery.polyfill.js

/**
 * 用于 jquery 在 worker 环境或者 V8 引擎的 polyfill
 */
// import { _global } from "@/core/0.foundation";

const _global = globalThis;

const document = {};
const fakeElement = Object.create(document);

Object.assign(document, {
    parentNode: null,
    nodeType: 9,
    head: fakeElement,
    body: fakeElement,
    ownerDocument: document,
    documentElement: document,
    toString() {
        return "FakeDocument";
    },
    appendChild(child) {
        return child;
    },
    implementation: {
        createHTMLDocument() {
            return {
                body: {
                    childNodes: [],
                },
            };
        },
        createDocumentFragment() {
            return this;
        },
    },
    getElementById() {
        return fakeElement;
    },
    createElement() {
        return fakeElement;
    },
    createDocumentFragment() {
        return this;
    },
    cloneNode() {
        return this;
    },
    getElementsByTagName() {
        return [fakeElement];
    },
    getElementsByClassName() {
        return [fakeElement];
    },
    setAttribute() {
        return null;
    },
    getAttribute() {
        return null;
    },
    removeChild() {
        return null;
    },
    addEventListener() {
        return null;
    },
    removeEventListener() {
        return null;
    },
});

Object.assign(fakeElement, {
    nodeType: 1,
    style: {},
    ownerDocument: document,
    parentNod: fakeElement,
    firstChild: fakeElement,
    lastChild: fakeElement,
    toString() {
        return "FakeElement";
    },
});

function polyfillProps(key, obj) {
    _global[key] = _global[key] || obj;
    if (typeof obj === "object") {
        try {
            Object.assign(_global[key], obj);
        } catch(err) {
            // _global[key] 可能只有 get 方法
        }
    }
}

_global.window = _global;
polyfillProps("XMLHttpRequest", function () {});
polyfillProps("document", document);