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node_modules/next/dist/esm/build/webpack/plugins/nextjs-require-cache-hot-reloader.js

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+import { deleteCache } from '../../../server/dev/require-cache';
+import { clearModuleContext } from '../../../server/web/sandbox';
+import path from 'path';
+const RUNTIME_NAMES = [
+    'webpack-runtime',
+    'webpack-api-runtime'
+];
+const PLUGIN_NAME = 'NextJsRequireCacheHotReloader';
+// This plugin flushes require.cache after emitting the files. Providing 'hot reloading' of server files.
+export class NextJsRequireCacheHotReloader {
+    constructor(opts){
+        this.prevAssets = null;
+        this.serverComponents = opts.serverComponents;
+    }
+    apply(compiler) {
+        compiler.hooks.assetEmitted.tap(PLUGIN_NAME, (_file, { targetPath })=>{
+            // Clear module context in this process
+            clearModuleContext(targetPath);
+            deleteCache(targetPath);
+        });
+        compiler.hooks.afterEmit.tapPromise(PLUGIN_NAME, async (compilation)=>{
+            for (const name of RUNTIME_NAMES){
+                const runtimeChunkPath = path.join(compilation.outputOptions.path, `${name}.js`);
+                deleteCache(runtimeChunkPath);
+            }
+            // we need to make sure to clear all server entries from cache
+            // since they can have a stale webpack-runtime cache
+            // which needs to always be in-sync
+            const entries = [
+                ...compilation.entrypoints.keys()
+            ].filter((entry)=>{
+                const isAppPath = entry.toString().startsWith('app/');
+                return entry.toString().startsWith('pages/') || isAppPath;
+            });
+            for (const page of entries){
+                const outputPath = path.join(compilation.outputOptions.path, page + '.js');
+                deleteCache(outputPath);
+            }
+        });
+    }
+}
+
+//# sourceMappingURL=nextjs-require-cache-hot-reloader.js.map