main repo

node_modules/next/dist/esm/server/app-render/get-preloadable-fonts.js

@@ -0,0 +1,35 @@
+/**
+ * Get hrefs for fonts to preload
+ * Returns null if there are no fonts at all.
+ * Returns string[] if there are fonts to preload (font paths)
+ * Returns empty string[] if there are fonts but none to preload and no other fonts have been preloaded
+ * Returns null if there are fonts but none to preload and at least some were previously preloaded
+ */ export function getPreloadableFonts(nextFontManifest, filePath, injectedFontPreloadTags) {
+    if (!nextFontManifest || !filePath) {
+        return null;
+    }
+    const filepathWithoutExtension = filePath.replace(/\.[^.]+$/, "");
+    const fontFiles = new Set();
+    let foundFontUsage = false;
+    const preloadedFontFiles = nextFontManifest.app[filepathWithoutExtension];
+    if (preloadedFontFiles) {
+        foundFontUsage = true;
+        for (const fontFile of preloadedFontFiles){
+            if (!injectedFontPreloadTags.has(fontFile)) {
+                fontFiles.add(fontFile);
+                injectedFontPreloadTags.add(fontFile);
+            }
+        }
+    }
+    if (fontFiles.size) {
+        return [
+            ...fontFiles
+        ].sort();
+    } else if (foundFontUsage && injectedFontPreloadTags.size === 0) {
+        return [];
+    } else {
+        return null;
+    }
+}
+
+//# sourceMappingURL=get-preloadable-fonts.js.map