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replace script tag with noscript and inline the states of form field components

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This commit is contained in:
Yanzhen Yu
2026-04-01 12:00:00 +08:00
parent ed2bc918e0
commit e9cf631934
6 changed files with 195 additions and 75 deletions
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13
src/rebuild.ts
View File

@@ -11,11 +11,20 @@ function buildNode(n: serializedNodeWithId): Node | null {
n.systemId,
);
case NodeType.Element:
const node = document.createElement(n.tagName);
const tagName = n.tagName === 'script' ? 'noscript' : n.tagName;
const node = document.createElement(tagName);
for (const name in n.attributes) {
if (n.attributes.hasOwnProperty(name)) {
let value = n.attributes[name];
value = typeof value === 'boolean' ? '' : value;
// textarea hack
if (n.tagName === 'textarea' && name === 'value') {
const child = document.createTextNode(value);
node.appendChild(child);
continue;
}
try {
node.setAttribute(name, n.attributes[name]);
node.setAttribute(name, value);
} catch (error) {
// skip invalid attribute
}

35
src/snapshot.ts
View File

@@ -11,6 +11,10 @@ function genId(): number {
return _id++;
}
function resetId() {
_id = 1;
}
function serializeNode(n: Node): serializedNode | false {
switch (n.nodeType) {
case n.DOCUMENT_NODE:
@@ -31,6 +35,28 @@ function serializeNode(n: Node): serializedNode | false {
for (const { name, value } of Array.from((n as HTMLElement).attributes)) {
attributes[name] = value;
}
if (
tagName === 'input' ||
tagName === 'textarea' ||
tagName === 'select'
) {
const value = (n as HTMLInputElement | HTMLTextAreaElement).value;
if (
attributes.type !== 'radio' &&
attributes.type !== 'checkbox' &&
value
) {
attributes.value = value;
} else if ((n as HTMLInputElement).checked) {
attributes.checked = (n as HTMLInputElement).checked;
}
}
if (tagName === 'option') {
const selectValue = (n as HTMLOptionElement).parentElement;
if (attributes.value === (selectValue as HTMLSelectElement).value) {
attributes.selected = (n as HTMLOptionElement).selected;
}
}
return {
type: NodeType.Element,
tagName,
@@ -65,7 +91,7 @@ function serializeNode(n: Node): serializedNode | false {
}
}
function snapshot(n: Node): serializedNodeWithId | null {
function _snapshot(n: Node): serializedNodeWithId | null {
const _serializedNode = serializeNode(n);
if (!_serializedNode) {
// TODO: dev only
@@ -80,10 +106,15 @@ function snapshot(n: Node): serializedNodeWithId | null {
serializedNode.type === NodeType.Element
) {
for (const childN of Array.from(n.childNodes)) {
serializedNode.childNodes.push(snapshot(childN));
serializedNode.childNodes.push(_snapshot(childN));
}
}
return serializedNode;
}
function snapshot(n: Node): serializedNodeWithId | null {
resetId();
return _snapshot(n);
}
export default snapshot;

2
src/types.ts
View File

@@ -20,7 +20,7 @@ export type documentTypeNode = {
};
export type attributes = {
[key: string]: string;
[key: string]: string | boolean;
};
export type elementNode = {
type: NodeType.Element;

18
test/html/with-script.html Normal file
View File

@@ -0,0 +1,18 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>with script</title>
</head>
<body>
<script src="a.js"></script>
<script>
console.log(1)
</script>
</body>
</html>

70
test/index.ts
View File

@@ -1,70 +0,0 @@
import 'mocha';
import mochaDom = require('mocha-jsdom');
import { expect } from 'chai';
import * as fs from 'fs';
import * as path from 'path';
import { JSDOM } from 'jsdom';
import { snapshot, rebuild } from '../src';
const htmlFolder = path.join(__dirname, 'html');
const htmls = fs.readdirSync(htmlFolder).map(filePath => {
return {
filePath,
content: fs.readFileSync(path.resolve(htmlFolder, filePath), 'utf-8'),
};
});
describe('integration tests', () => {
mochaDom({ url: 'http://localhost' });
it('will snapshot document type', () => {
const raw = '<html></html>';
const dom = new JSDOM(raw);
const snap = snapshot(dom.window.document);
expect(snap).to.deep.equal({
type: 0,
childNodes: [
{
type: 2,
tagName: 'html',
attributes: {},
childNodes: [
{
type: 2,
tagName: 'head',
attributes: {},
childNodes: [],
id: 3,
},
{
type: 2,
tagName: 'body',
attributes: {},
childNodes: [],
id: 4,
},
],
id: 2,
},
],
id: 1,
});
});
it('will not throw error with invalid attribute', () => {
const raw = `<html foo='bar' ''></html>`;
const dom = new JSDOM(raw);
expect(() => rebuild(snapshot(dom.window.document))).not.to.throw();
});
for (const html of htmls) {
it('[html file]:' + html.filePath, () => {
const dom = new JSDOM(html.content);
const snap = snapshot(dom.window.document);
const rebuildDom = rebuild(snap);
expect((rebuildDom as Document).documentElement.outerHTML).to.equal(
dom.window.document.documentElement.outerHTML,
);
});
}
});

132
test/integration.ts Normal file
View File

@@ -0,0 +1,132 @@
import 'mocha';
import mochaDom = require('mocha-jsdom');
import { expect } from 'chai';
import * as fs from 'fs';
import * as path from 'path';
import { JSDOM } from 'jsdom';
import { snapshot, rebuild } from '../src';
const htmlFolder = path.join(__dirname, 'html');
const htmls = fs.readdirSync(htmlFolder).map(filePath => {
return {
filePath,
content: fs.readFileSync(path.resolve(htmlFolder, filePath), 'utf-8'),
};
});
describe('integration tests', () => {
mochaDom({ url: 'http://localhost' });
for (const html of htmls) {
it('[html file]:' + html.filePath, () => {
const dom = new JSDOM(html.content);
const snap = snapshot(dom.window.document);
const rebuildDom = rebuild(snap);
const htmlStr = dom.window.document.documentElement.outerHTML
.replace(/<script>(.|\n)*?<\/script>/g, '<script></script>')
.replace(/<script(.*?)>/g, '<noscript$1>')
.replace(/<\/script>/g, '</noscript>');
expect((rebuildDom as Document).documentElement.outerHTML).to.equal(
htmlStr,
);
});
}
it('will snapshot document type', () => {
const raw = '<html></html>';
const dom = new JSDOM(raw);
const snap = snapshot(dom.window.document);
expect(snap).to.deep.equal({
type: 0,
childNodes: [
{
type: 2,
tagName: 'html',
attributes: {},
childNodes: [
{
type: 2,
tagName: 'head',
attributes: {},
childNodes: [],
id: 3,
},
{
type: 2,
tagName: 'body',
attributes: {},
childNodes: [],
id: 4,
},
],
id: 2,
},
],
id: 1,
});
});
it('will not throw error with invalid attribute', () => {
const raw = `<html foo='bar' ''></html>`;
const dom = new JSDOM(raw);
expect(() => rebuild(snapshot(dom.window.document))).not.to.throw();
});
it('will inline text input value', () => {
const raw = '<input type="text">';
const dom = new JSDOM(raw);
dom.window.document.querySelector('input').value = '1';
const rebuildDom = rebuild(snapshot(dom.window.document));
expect((rebuildDom as Document).querySelector('input').outerHTML).to.equal(
'<input type="text" value="1">',
);
});
it('will inline radio input value', () => {
const raw = '<input type="radio">';
const dom = new JSDOM(raw);
dom.window.document.querySelector('input').checked = true;
const rebuildDom = rebuild(snapshot(dom.window.document));
expect((rebuildDom as Document).querySelector('input').outerHTML).to.equal(
'<input type="radio" checked="">',
);
});
it('will inline checkbox input value', () => {
const raw = '<input type="checkbox">';
const dom = new JSDOM(raw);
dom.window.document.querySelector('input').checked = true;
const rebuildDom = rebuild(snapshot(dom.window.document));
expect((rebuildDom as Document).querySelector('input').outerHTML).to.equal(
'<input type="checkbox" checked="">',
);
});
it('will inline textarea value into text node', () => {
const raw = '<textarea name="" id="" cols="30" rows="10"></textarea>';
const dom = new JSDOM(raw);
dom.window.document.querySelector('textarea').value = '1234';
const rebuildDom = rebuild(snapshot(dom.window.document));
expect(
(rebuildDom as Document).querySelector('textarea').outerHTML,
).to.equal('<textarea name="" id="" cols="30" rows="10">1234</textarea>');
});
it('will inline options state', () => {
const raw = `
<select name="" id="">
<option value="1">1</option>
<option value="2">2</option>
</select>
`;
const dom = new JSDOM(raw);
dom.window.document.querySelector('select').value = '2';
const rebuildDom = rebuild(snapshot(dom.window.document));
expect((rebuildDom as Document).querySelector('select').outerHTML).to.equal(
`<select name="" id="" value="2">
<option value="1">1</option>
<option value="2" selected="">2</option>
</select>`,
);
});
});