Strict null check platform/configuration/node

src/tsconfig.strictNullChecks.json

@@ -403,6 +403,7 @@
 		"./vs/platform/configuration/common/configuration.ts",
 		"./vs/platform/configuration/common/configurationModels.ts",
 		"./vs/platform/configuration/common/configurationRegistry.ts",
+		"./vs/platform/configuration/node/configuration.ts",
 		"./vs/platform/configuration/test/common/testConfigurationService.ts",
 		"./vs/platform/contextkey/browser/contextKeyService.ts",
 		"./vs/platform/contextkey/common/contextkey.ts",

src/vs/platform/configuration/node/configuration.ts

@@ -30,7 +30,7 @@ export class UserConfiguration extends Disposable {
 						userConfigModelParser.parse(content);
 						parseErrors = [...userConfigModelParser.errors];
 						return userConfigModelParser;
-					}, initCallback: () => c(null)
+					}, initCallback: () => c(void 0)
 				});
 				this._register(this.userConfigModelWatcher);