Improve error message handling and mostly actually show them in the f…

…irst place

src/extension.coffee

@@ -105,7 +105,7 @@ module.exports.activate = (###* @type vscode.ExtensionContext ### context) =>
 				try
 					resp.data = await func()
 				catch e
-					resp.error = e
+					resp.error = "Internal extension backend error: #{if typeof e == 'string' then e else e.message}"
 				post_message resp
 			switch message.type
 				when 'request'

src/git.coffee

@@ -86,7 +86,9 @@ module.exports.get_git = (EXT_ID, log, { on_repo_external_state_change, on_repo_
 				if not repo and repo_index > 0
 					repo_index = 0
 					repo = api.repositories[repo_index]
-					throw 'No repository found' if not repo
+					throw "No repository found for repo_index #{repo_index}" if not repo
+				if ! repo
+					throw "No repository selected"
 				cwd = repo.rootUri.fsPath
 			{ stdout, stderr: _ } = await exec 'git ' + args,
 				cwd: cwd

web/src/bridge.coffee

@@ -31,7 +31,8 @@ export exchange_message = (###* @type string ### command, ###* @type any ### dat
 		response_handlers[id] = (data) =>
 			ok data
 	console.info "exchange_message", command, data # , resp
-	if resp.error then throw resp.error
+	if resp.error
+		throw new Error(JSON.stringify({ error_response: resp.error, request }))
 	resp.data
 
 ###* @return {Promise<string>} ###

web/src/vue-app.coffee

@@ -13,7 +13,8 @@ import '@vscode/codicons/dist/codicon.css'
 
 console_error = console.error
 handle_error = (###* @type {any} ### e) =>
-    console_error e
+    console_error e, new Error().stack
+    console.trace()
     debugger
     show_error_message "git log --graph extension encountered an unexpected error. Sorry! Error summary: " + (e.message or e.msg or e.data or e.body or e.stack or try JSON.stringify(e) or e.toString?()) + ". For details, see VSCode developer console. Please consider reporting this error."
 window.onerror = handle_error