Precise DOM morphing
morphing
typescript
dom
Improve document handling
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-3
+4
-3
src/morphlex.ts
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-3
src/morphlex.ts
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*
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* @param from The source document to morph from.
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* @param to The target document or string to morph to.
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* @param options Optional configuration for the morphing behavior.
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* @example
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* ```ts
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* morphDocument(document, newDocument)
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* morphDocument(document, "<html>...</html>", { preserveModified: true })
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* ```
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*/
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export function morphDocument(from: Document, to: Document | string): void {
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export function morphDocument(from: Document, to: Document | string, options?: Options): void {
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if (typeof to === "string") to = parseDocument(to)
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morph(from.documentElement, to.documentElement)
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morph(from.documentElement, to.documentElement, options)
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}
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/**
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test/new/document.ts
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test/new/document.ts
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import { test, expect } from "vitest"
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import { morphDocument } from "../../src/morphlex"
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test("morphing an entire document", () => {
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const parser = new DOMParser()
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const originalDocument = parser.parseFromString(
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`
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<html>
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<head>
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<title>Original Title</title>
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<meta name="description" content="original">
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</head>
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<body>
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<div id="content">Original Content</div>
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</body>
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</html>
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`,
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"text/html",
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)
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morphDocument(
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originalDocument,
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`
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<html>
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<head>
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<title>New Title</title>
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<meta name="description" content="new">
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</head>
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<body>
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<div id="content">New Content</div>
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</body>
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</html>
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`,
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)
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expect(document.title).toBe("New Title")
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expect(document.querySelector('meta[name="description"]')?.getAttribute("content")).toBe("new")
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expect(document.querySelector("#content")?.textContent).toBe("New Content")
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})