Fixes #29852: Task 2.0.0 schema polish

Author: dbaeumer

src/vs/workbench/parts/tasks/electron-browser/jsonSchemaCommon.ts

@@ -175,6 +175,7 @@ const schema: IJSONSchema = {
 		},
 		taskRunnerConfiguration: {
 			type: 'object',
+			required: [],
 			properties: {
 				command: {
 					type: 'string',

src/vs/workbench/parts/tasks/electron-browser/jsonSchema_v2.ts

@@ -145,8 +145,13 @@ const group: IJSONSchema = {
 const taskType: IJSONSchema = {
 	type: 'string',
 	enum: ['shell', 'process'],
-	default: 'process',
-	description: nls.localize('JsonSchema.tasks.type', 'Defines whether the task is run as a process or as a command inside a shell. Default is process.')
+	default: 'shell',
+	description: nls.localize('JsonSchema.tasks.type', 'Defines whether the task is run as a process or as a command inside a shell.')
+};
+
+const label: IJSONSchema = {
+	type: 'string',
+	description: nls.localize('JsonSchema.tasks.label', "The task's user interface label")
 };
 
 const version: IJSONSchema = {
@@ -224,13 +229,25 @@ taskDefinitions.push(customize);
 
 let definitions = Objects.deepClone(commonSchema.definitions);
 let taskDescription: IJSONSchema = definitions.taskDescription;
+taskDescription.required = ['label', 'type'];
+taskDescription.properties.label = Objects.deepClone(label);
 taskDescription.properties.isShellCommand = Objects.deepClone(shellCommand);
 taskDescription.properties.dependsOn = dependsOn;
 taskDescription.properties.identifier = Objects.deepClone(identifier);
 taskDescription.properties.type = Objects.deepClone(taskType);
 taskDescription.properties.presentation = Objects.deepClone(presentation);
 taskDescription.properties.terminal = terminal;
 taskDescription.properties.group = Objects.deepClone(group);
+taskDescription.properties.taskName.deprecationMessage = nls.localize(
+	'JsonSchema.tasks.taskName.deprecated',
+	'The task\'s name property is deprecated. Use the label property instead.'
+);
+taskDescription.default = {
+	label: 'My Task',
+	type: 'shell',
+	command: 'echo Hello',
+	problemMatcher: []
+};
 definitions.showOutputType.deprecationMessage = nls.localize(
 	'JsonSchema.tasks.showOputput.deprecated',
 	'The property showOutput is deprecated. Use the reveal property inside the presentation property instead. See also the 1.14 release notes.'

src/vs/workbench/parts/tasks/node/taskConfiguration.ts

@@ -1246,6 +1246,9 @@ namespace CustomTask {
 			return undefined;
 		}
 		let taskName = external.taskName;
+		if (Types.isString(external.label) && context.schemaVersion === Tasks.JsonSchemaVersion.V2_0_0) {
+			taskName = external.label;
+		}
 		if (!taskName) {
 			context.problemReporter.error(nls.localize('ConfigurationParser.noTaskName', 'Error: tasks must provide a taskName property. The task will be ignored.\n{0}\n', JSON.stringify(external, null, 4)));
 			return undefined;