Disable <title/> warning when React Helmet is used (#7483)

02551d3b · Kuba Juszczyk · Tim Neutkens · cc6eecd2 · 02551d3b
隐藏空白更改
内联并排

Showing with 2 addition and 1 deletion

packages/next/pages/_document.tsx packages/next/pages/_document.tsx +2 -1

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--- a/packages/next/pages/_document.tsx
+++ b/packages/next/pages/_document.tsx
@@ -207,7 +207,8 @@ export class Head extends Component<OriginProps> {
    // show a warning if Head contains <title> (only in development)
    if (process.env.NODE_ENV !== 'production') {
      children = React.Children.map(children, (child: any) => {
-        if (child && child.type === 'title') {
+        const isReactHelmet = child && child.props && child.props['data-react-helmet']
+        if (child && child.type === 'title' && !isReactHelmet) {
          console.warn(
            "Warning: <title> should not be used in _document.js's <Head>. https://err.sh/next.js/no-document-title"
          )