feat: proxy URI environment variable (#4681)

* Add test extension

This will let us test extension-related features (like the proxy URI).

I removed the environment variables in the script because they override
the ones you set yourself. We still set defaults in constants.ts.

* Add changelog entry for VSCODE_PROXY_URI

* Add terminal test for VSCODE_PROXY_URI

* Update VS Code

This adds the VSCODE_PROXY_URI environment variable.

test/e2e/extensions/test-extension/.gitignore

@@ -0,0 +1 @@
+/extension.js

test/e2e/extensions/test-extension/extension.ts

@@ -0,0 +1,13 @@
+import * as vscode from "vscode"
+
+export function activate(context: vscode.ExtensionContext) {
+  context.subscriptions.push(
+    vscode.commands.registerCommand("codeServerTest.proxyUri", () => {
+      if (process.env.VSCODE_PROXY_URI) {
+        vscode.window.showInformationMessage(process.env.VSCODE_PROXY_URI)
+      } else {
+        vscode.window.showErrorMessage("No proxy URI was set")
+      }
+    }),
+  )
+}

test/e2e/extensions/test-extension/package.json

@@ -0,0 +1,29 @@
+{
+  "name": "code-server-extension",
+  "description": "code-server test extension",
+  "version": "0.0.1",
+  "publisher": "cdr",
+  "activationEvents": [
+    "onCommand:codeServerTest.proxyUri"
+  ],
+  "engines": {
+    "vscode": "^1.56.0"
+  },
+  "main": "./extension.js",
+  "contributes": {
+    "commands": [
+      {
+        "command": "codeServerTest.proxyUri",
+        "title": "Get proxy URI",
+        "category": "code-server"
+      }
+    ]
+  },
+  "devDependencies": {
+    "@types/vscode": "^1.56.0",
+    "typescript": "^4.0.5"
+  },
+  "scripts": {
+    "build": "tsc extension.ts"
+  }
+}

test/e2e/extensions/test-extension/tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "target": "es2020",
+    "module": "commonjs",
+    "outDir": ".",
+    "strict": true,
+    "baseUrl": "./"
+  },
+  "include": ["./extension.ts"]
+}

test/e2e/extensions/test-extension/yarn.lock

@@ -0,0 +1,13 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@types/vscode@^1.56.0":
+  version "1.57.0"
+  resolved "https://registry.yarnpkg.com/@types/vscode/-/vscode-1.57.0.tgz#cc648e0573b92f725cd1baf2621f8da9f8bc689f"
+  integrity sha512-FeznBFtIDCWRluojTsi9c3LLcCHOXP5etQfBK42+ixo1CoEAchkw39tuui9zomjZuKfUVL33KZUDIwHZ/xvOkQ==
+
+typescript@^4.0.5:
+  version "4.3.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.3.2.tgz#399ab18aac45802d6f2498de5054fcbbe716a805"
+  integrity sha512-zZ4hShnmnoVnAHpVHWpTcxdv7dWP60S2FsydQLV8V5PbS3FifjWFFRiHSWpDJahly88PRyV5teTSLoq4eG7mKw==