Use modern HTML5 <!DOCTYPE>, as discussed in #3299

jestjs · Apr 23, 2017 · 23e0054 · 23e0054
1 parent a9288e4
commit 23e0054
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/jest-environment-jsdom/src/index.js b/packages/jest-environment-jsdom/src/index.js
@@ -25,7 +25,7 @@ class JSDOMEnvironment {
 
   constructor(config: Config): void {
     // lazy require
-    this.document = require('jsdom').jsdom(/* markup */ undefined, {
+    this.document = require('jsdom').jsdom('<!DOCTYPE html>', {
       url: config.testURL,
     });
     const global = (this.global = this.document.defaultView);