diff --git a/extensions/void/.vscode/launch.json b/extensions/void/.vscode/launch.json
index 88804653..17ab1d57 100644
--- a/extensions/void/.vscode/launch.json
+++ b/extensions/void/.vscode/launch.json
@@ -10,7 +10,8 @@
 			"type": "extensionHost",
 			"request": "launch",
 			"args": [
-				"--extensionDevelopmentPath=${workspaceFolder}"
+				"--extensionDevelopmentPath=${workspaceFolder}",
+                "--enable-proposed-api=void.void",
 			],
 			"outFiles": [
 				"${workspaceFolder}/out/**/*.js"
@@ -18,4 +19,4 @@
 			"preLaunchTask": "${defaultBuildTask}"
 		}
 	]
-}
+}
\ No newline at end of file
diff --git a/extensions/void/build/build.js b/extensions/void/build/build.js
index 8b2ab8be..d1be3bb0 100644
--- a/extensions/void/build/build.js
+++ b/extensions/void/build/build.js
@@ -49,6 +49,11 @@ const convertTSXtoJS = async ({ from, to }) => {
 		to: 'dist/webviews/ctrlk/index.js',
 	})
 
+	await convertTSXtoJS({
+		from: 'src/webviews/diffline/index.tsx',
+		to: 'dist/webviews/diffline/index.js',
+	})
+
 	// convert tailwind to css
 	await convertTailwindToCSS({
 		from: 'src/webviews/styles.css',
diff --git a/extensions/void/package.json b/extensions/void/package.json
index 01edcf93..7322c277 100644
--- a/extensions/void/package.json
+++ b/extensions/void/package.json
@@ -10,6 +10,9 @@
   "categories": [
     "Other"
   ],
+  "enabledApiProposals": [
+    "editorInsets"
+  ],
   "activationEvents": [],
   "main": "./out/extension/extension.js",
   "contributes": {
diff --git a/extensions/void/src/extension/DiffProvider.ts b/extensions/void/src/extension/DiffProvider.ts
index ca567b4c..9836dfde 100644
--- a/extensions/void/src/extension/DiffProvider.ts
+++ b/extensions/void/src/extension/DiffProvider.ts
@@ -3,6 +3,7 @@ import { findDiffs } from './findDiffs';
 import { throttle } from 'lodash';
 import { DiffArea, BaseDiff, Diff } from '../common/shared_types';
 import { readFileContentOfUri } from './extensionLib/readFileContentOfUri';
+import { updateWebviewHTML } from './extensionLib/updateWebviewHTML';
 
 
 const THROTTLE_TIME = 100
@@ -31,6 +32,8 @@ export class DiffProvider implements vscode.CodeLensProvider {
 	private _diffareaidPool = 0
 	private _diffidPool = 0
 
+	private _extensionUri: vscode.Uri
+
 	// used internally by vscode
 	private _onDidChangeCodeLenses: vscode.EventEmitter<void> = new vscode.EventEmitter<void>(); // signals a UI refresh on .fire() events
 	public readonly onDidChangeCodeLenses: vscode.Event<void> = this._onDidChangeCodeLenses.event;
@@ -42,7 +45,8 @@ export class DiffProvider implements vscode.CodeLensProvider {
 	}
 
 	// declared by us, registered with vscode.languages.registerCodeLensProvider()
-	constructor() {
+	constructor(context: vscode.ExtensionContext) {
+		this._extensionUri = context.extensionUri
 
 		console.log('Creating DisplayChangesProvider')
 
@@ -210,6 +214,21 @@ export class DiffProvider implements vscode.CodeLensProvider {
 			)
 		);
 
+		// update red highlighting
+		// this._diffsOfDocument[docUriStr]
+		// 	.filter(diff => diff.originalCode !== '')
+		// 	.forEach(diff => {
+		// 		const text = originalFile.split('\n').slice(diff.originalRange.start.line, diff.originalRange.start.line + 1).join('\n')
+		// 		const height = text.split('\n').length
+		// 		const line = diff.range.start.line - 1
+
+		// 		const inset = vscode.window.createWebviewTextEditorInset(editor, line, height);
+		// 		updateWebviewHTML(inset.webview, this._extensionUri, { jsOutLocation: 'dist/webviews/diffline/index.js', cssOutLocation: 'dist/webviews/styles.css' },
+		// 			{ text }
+		// 		)
+
+
+		// 	})
 
 		// for each diffArea, highlight its sweepIndex in dark gray
 		editor.setDecorations(
@@ -234,8 +253,6 @@ export class DiffProvider implements vscode.CodeLensProvider {
 			)
 		)
 
-		// TODO update red highlighting
-		// this._diffsOfDocument[docUriStr].map(diff => diff.deletedCode)
 
 		// update code lenses
 		this._onDidChangeCodeLenses.fire()
@@ -392,7 +409,7 @@ export class DiffProvider implements vscode.CodeLensProvider {
 
 		// figure out where to highlight based on where the AI is in the stream right now, use the last diff in findDiffs to figure that out
 		const diffs = findDiffs(originalDiffAreaCode, newDiffAreaCode)
-		const lastDiff = diffs[diffs.length - 1] ?? null
+		const lastDiff = diffs?.[diffs.length - 1] ?? null
 
 		// these are two different coordinate systems - new and old line number
 		let newFileEndLine: number // get new[0...newStoppingPoint] with line=newStoppingPoint highlighted
diff --git a/extensions/void/src/extension/extension.ts b/extensions/void/src/extension/extension.ts
index 042b5dac..cc7cbed6 100644
--- a/extensions/void/src/extension/extension.ts
+++ b/extensions/void/src/extension/extension.ts
@@ -83,7 +83,7 @@ export function activate(context: vscode.ExtensionContext) {
 	);
 
 	// 3. Show an approve/reject codelens above each change
-	const diffProvider = new DiffProvider();
+	const diffProvider = new DiffProvider(context);
 	context.subscriptions.push(vscode.languages.registerCodeLensProvider('*', diffProvider));
 
 	// 4. Add approve/reject commands
diff --git a/extensions/void/src/extension/extensionLib/updateWebviewHTML.ts b/extensions/void/src/extension/extensionLib/updateWebviewHTML.ts
index 1957ac75..d237d4be 100644
--- a/extensions/void/src/extension/extensionLib/updateWebviewHTML.ts
+++ b/extensions/void/src/extension/extensionLib/updateWebviewHTML.ts
@@ -32,7 +32,7 @@ export const updateWebviewHTML = (webview: vscode.Webview, extensionUri: vscode.
 	<link href="${stylesUri}" rel="stylesheet">
   </head>
   <body>
-	<div id="root" ${props ? `data-void-props="${encodeURIComponent(JSON.stringify(props))}"` : ''}></div>
+	<div id="root"${props ? ` data-void-props="${encodeURIComponent(JSON.stringify(props))}"` : ''}></div>
 	<script nonce="${nonce}" src="${scriptUri}"></script>
   </body>
   </html>`;
diff --git a/extensions/void/src/webviews/common/contextForProps.tsx b/extensions/void/src/webviews/common/contextForProps.tsx
index 25f73abf..6775fcb1 100644
--- a/extensions/void/src/webviews/common/contextForProps.tsx
+++ b/extensions/void/src/webviews/common/contextForProps.tsx
@@ -1,22 +1,33 @@
 import React, { ReactNode, createContext, useCallback, useContext, useEffect, useRef, useState, } from "react"
 
-type PropsType = { [s: string]: any } | null
-
-type PropsValue = { props: PropsType }
-
-const PropsContext = createContext<PropsValue>(undefined as unknown as PropsValue)
+const PropsContext = createContext<any>(undefined as unknown as any)
 
 // provider for whatever came in data-void-props
-export function PropsProvider({ children, props }: { children: ReactNode, props: PropsType }) {
+export function PropsProvider({ children, rootElement }: { children: ReactNode, rootElement: HTMLElement }) {
+
+	const [props, setProps] = useState<object | null>(null)
+
+	// update props when rootElement changes
+	useEffect(() => {
+		let props = rootElement.getAttribute("data-void-props")
+		let propsObj: object | null = null
+		if (props !== null) {
+			propsObj = JSON.parse(decodeURIComponent(props))
+		}
+		setProps(propsObj)
+	}, [rootElement])
+
 	return (
-		<PropsContext.Provider value={{ props }}>
+		<PropsContext.Provider value={props}>
 			{children}
 		</PropsContext.Provider>
 	)
 }
 
-export function useVoidProps(): PropsValue {
-	const context = useContext<PropsValue>(PropsContext)
+export function useVoidProps<T extends {}>(): T | null {
+	// context is the "value" from above
+	const context: T | null | undefined = useContext<T>(PropsContext)
+	// only undefined if has no provider
 	if (context === undefined) {
 		throw new Error("useVoidProps missing Provider")
 	}
diff --git a/extensions/void/src/webviews/common/mount.tsx b/extensions/void/src/webviews/common/mount.tsx
index 70ef66f6..a07b46b7 100644
--- a/extensions/void/src/webviews/common/mount.tsx
+++ b/extensions/void/src/webviews/common/mount.tsx
@@ -46,18 +46,12 @@ export const mount = (children: React.ReactNode) => {
 
 	// mount the sidebar on the id="root" element
 	const rootElement = document.getElementById("root")!
-	console.log("Void root Element:", rootElement)
-
-	let props = rootElement.getAttribute("data-void-props")
-	let propsObj: object | null = null
-	if (props !== null) {
-		propsObj = JSON.parse(decodeURIComponent(props))
-	}
+	// console.log("Void root Element:", rootElement)
 
 	const content = (<>
 		<ListenersAndTracking />
 
-		<PropsProvider props={propsObj}>
+		<PropsProvider rootElement={rootElement}>
 			<ThreadsProvider>
 				<ConfigProvider>
 					{children}
@@ -69,4 +63,4 @@ export const mount = (children: React.ReactNode) => {
 	const root = ReactDOM.createRoot(rootElement)
 	root.render(content);
 
-}
\ No newline at end of file
+}
diff --git a/extensions/void/src/webviews/diffline/DiffLine.tsx b/extensions/void/src/webviews/diffline/DiffLine.tsx
new file mode 100644
index 00000000..6fbe8b6c
--- /dev/null
+++ b/extensions/void/src/webviews/diffline/DiffLine.tsx
@@ -0,0 +1,29 @@
+import React, { useState } from 'react';
+import { useOnVSCodeMessage } from '../common/getVscodeApi';
+import { useVoidProps } from '../common/contextForProps';
+
+
+type props = {
+	text: string
+}
+
+export const DiffLine = () => {
+
+	const props = useVoidProps<props>()
+
+	console.log('props!', props)
+
+	if (!props) {
+		return null
+	}
+
+	// eslint-disable-next-line react/prop-types
+	const text = props.text
+
+	return <>
+		<div>
+			{text}
+		</div>
+	</>
+};
+
diff --git a/extensions/void/src/webviews/diffline/index.tsx b/extensions/void/src/webviews/diffline/index.tsx
new file mode 100644
index 00000000..dc9a59b9
--- /dev/null
+++ b/extensions/void/src/webviews/diffline/index.tsx
@@ -0,0 +1,7 @@
+import React from "react"
+import { mount } from "../common/mount"
+import { DiffLine } from "./DiffLine"
+
+// this is the entry point that mounts diffline
+mount(<DiffLine />)
+