Merge pull request #7 from adamvoss/patch-1

Add null check to prevent service from crashing
microsoft · Jul 3, 2017 · 1a4e783 · 1a4e783
2 parents 6a8bb68 + c140d1b
commit 1a4e783
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/services/jsonSchemaService.ts b/src/services/jsonSchemaService.ts
@@ -491,7 +491,7 @@ export class JSONSchemaService implements IJSONSchemaService {
 			let schemaProperties = (<Parser.ObjectASTNode>document.root).properties.filter((p) => (p.key.value === '$schema') && !!p.value);
 			if (schemaProperties.length > 0) {
 				let schemeId = <string>schemaProperties[0].value.getValue();
-				if (Strings.startsWith(schemeId, '.') && this.contextService) {
+				if (schemeId && Strings.startsWith(schemeId, '.') && this.contextService) {
 					schemeId = this.contextService.resolveRelativePath(schemeId, resource);
 				}
 				if (schemeId) {
@@ -533,4 +533,4 @@ function toDisplayString(url: string) {
 		// ignore
 	}
 	return url;
-}
+}