Function pushLink

packages/react-dom-bindings/src/server/ReactFizzConfigDOM.js:2850–3024

(
  target: Array<Chunk | PrecomputedChunk>,
  props: Object,
  resumableState: ResumableState,
  renderState: RenderState,
  hoistableState: null | HoistableState,
  textEmbedded: boolean,
  formatContext: FormatContext,
)

}

function pushLink(
  target: Array<Chunk | PrecomputedChunk>,
  props: Object,
  resumableState: ResumableState,
  renderState: RenderState,
  hoistableState: null | HoistableState,
  textEmbedded: boolean,
  formatContext: FormatContext,
): null {
  const noscriptTagInScope = formatContext.tagScope & NOSCRIPT_SCOPE;
  const isFallback = formatContext.tagScope & FALLBACK_SCOPE;
  const rel = props.rel;
  const href = props.href;
  const precedence = props.precedence;
  if (
    formatContext.insertionMode === SVG_MODE ||
    noscriptTagInScope ||
    props.itemProp != null ||
    typeof rel !== 'string' ||
    typeof href !== 'string' ||
    href === ''
  ) {
    if (__DEV__) {
      if (rel === 'stylesheet' && typeof props.precedence === 'string') {
        if (typeof href !== 'string' || !href) {
          console.error(
            'React encountered a `<link rel="stylesheet" .../>` with a `precedence` prop and expected the `href` prop to be a non-empty string but ecountered %s instead. If your intent was to have React hoist and deduplciate this stylesheet using the `precedence` prop ensure there is a non-empty string `href` prop as well, otherwise remove the `precedence` prop.',
            getValueDescriptorExpectingObjectForWarning(href),
          );
        }
      }
    }
    pushLinkImpl(target, props);
    return null;
  }

  if (props.rel === 'stylesheet') {
    // This <link> may hoistable as a Stylesheet Resource, otherwise it will emit in place
    const key = getResourceKey(href);
    if (
      typeof precedence !== 'string' ||
      props.disabled != null ||
      props.onLoad ||
      props.onError
    ) {
      // This stylesheet is either not opted into Resource semantics or has conflicting properties which
      // disqualify it for such. We can still create a preload resource to help it load faster on the
      // client
      if (__DEV__) {
        if (typeof precedence === 'string') {
          if (props.disabled != null) {
            console.error(
              'React encountered a `<link rel="stylesheet" .../>` with a `precedence` prop and a `disabled` prop. The presence of the `disabled` prop indicates an intent to manage the stylesheet active state from your from your Component code and React will not hoist or deduplicate this stylesheet. If your intent was to have React hoist and deduplciate this stylesheet using the `precedence` prop remove the `disabled` prop, otherwise remove the `precedence` prop.',
            );
          } else if (props.onLoad || props.onError) {
            const propDescription =
              props.onLoad && props.onError
                ? '`onLoad` and `onError` props'