Avoid excessive trace logging (microsoft/vscode#197549)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vscode/proxy-agent",
-  "version": "0.18.0",
+  "version": "0.18.1",
   "description": "NodeJS http(s) agent implementation for VS Code",
   "main": "out/index.js",
   "types": "out/index.d.ts",

src/index.ts

@@ -659,9 +659,12 @@ export function toLogString(args: any[]) {
 			const t = typeof value;
 			if (t === 'object') {
 				if (key) {
-					if (key === '_vscodeAdditionalCaCerts' && Array.isArray(value)) {
+					if ((key === 'ca' || key === '_vscodeAdditionalCaCerts') && Array.isArray(value)) {
 						return `[${value.length} certs]`;
 					}
+					if (key === 'ca' && (typeof value === 'string' || Buffer.isBuffer(value))) {
+						return `[${(value.toString().match(/-----BEGIN CERTIFICATE-----/g) || []).length} certs]`;
+					}
 					return !value || value.toString ? String(value) : Object.prototype.toString.call(value);
 				} else {
 					return value;