Is this the best way to generate a Zip file in Scripter?

XCAssets.ts

const colors = figma.getLocalPaintStyles()
	.map(c => {
		const {name, paints} = c
		const paint = paints[0]
		if (isSolidPaint(paint)) {
			const {opacity, color} = paint
			const {r,g,b} = color
			return {name, color: {red: r, green: g, blue: b, alpha: opacity} }
		} else {
			return undefined
		}
	}).filter(c => c)

//print(colors)

const zipper = createWorker(async w => {
	const JSZip_ = await w.import("jszip@3.7.1/dist/jszip.min.js")
	const JSZip = JSZip_()

	const colors = await w.recv()
	const zip = JSZip();

	const info = {
		author : "darknoon.figma.ExportXCAssets",
		version : 1,
	};

	// TODO: parse namespaces
	const folderContents = {
		info,
		properties: {
			"provides-namespace" : true
		}
	};

	zip.folder("Histogram")
		.file("Contents.json", JSON.stringify(folderContents))

  for (let c of colors) {
		const {name, color} = c
	  const folder = zip.folder(`${name}.colorset`)
		const contents = {
			colors: [
				// Add other variants here
				{
					color : {
						"color-space" : "srgb",
						components : color,
					},
					idiom : "universal"
				}
			],
			info
		};
		folder.file("Contents.json", JSON.stringify(contents))
	}
  const result = await zip.generateAsync({type : "uint8array"})
	w.send(result)
})
zipper.send(colors)
const zip = await zipper.recv();

//print("Result: ", zip)

//print("Opening window…")

let downloadWindow = createWindow({width:300, height:300}, async w => {
	const data = await w.recv();
	if (true) {
		const blob = new w.Blob([data], {type: "application/zip"})
		const blobURL = w.URL.createObjectURL(blob)
		const button = w.createElement("a") as WebDOM.HTMLAnchorElement;
		button.href = blobURL
		button.download = "Assets.zip"
		// Show the Blob URL… clicking doesn't trigger a download tho
		button.textContent = "Option-click to download"
		button.setAttribute("download", "Assets.zip")
		//button.click()
		w.document.body.appendChild(button)
	} else {
		// This API seems to not be available in Scripter
		const f = new File([data], "Assets.zip")
		w.window.saveAs(f, "Assets.zip")
	}

})

downloadWindow.send(zip)
await downloadWindow

print("done")