fix(rspeedy/react): only inject hot clients on needed

.changeset/cold-frogs-flash.md

@@ -0,0 +1,5 @@
+---
+"@lynx-js/react-rsbuild-plugin": patch
+---
+
+Dev servers now honor `dev.hmr` and `dev.liveReload` when deciding whether to load hot clients.

packages/rspeedy/plugin-react/src/entry.ts

@@ -63,6 +63,8 @@ export function applyEntry(
     const isLynx = environment.name === 'lynx'
     const isWeb = environment.name === 'web'
 
+    const { hmr, liveReload } = environment.config.dev ?? {}
+
     chain.entryPoints.clear()
 
     const mainThreadChunks: string[] = []
@@ -116,7 +118,7 @@ export function applyEntry(
           import: imports,
           filename: mainThreadName,
         })
-        .when(isDev && !isWeb, entry => {
+        .when(isDev && !isWeb && hmr !== false, entry => {
           const require = createRequire(import.meta.url)
           // use prepend to make sure it does not affect the exports
           // from the entry
@@ -137,25 +139,28 @@ export function applyEntry(
         })
         // in standalone lazy bundle mode, we do not add
         // other entries to avoid wrongly exporting from other entries
-        .when(isDev && !isWeb, entry => {
-          // use prepend to make sure it does not affect the exports
-          // from the entry
-          entry
-            // This is aliased in `@lynx-js/rspeedy`
-            .prepend({
-              layer: LAYERS.BACKGROUND,
-              import: '@rspack/core/hot/dev-server',
-            })
-            .prepend({
-              layer: LAYERS.BACKGROUND,
-              import: '@lynx-js/webpack-dev-transport/client',
-            })
-            // This is aliased in `./refresh.ts`
-            .prepend({
-              layer: LAYERS.BACKGROUND,
-              import: '@lynx-js/react/refresh',
-            })
-        })
+        .when(
+          isDev && !isWeb && !(hmr === false && liveReload === false),
+          entry => {
+            // use prepend to make sure it does not affect the exports
+            // from the entry
+            entry
+              // This is aliased in `@lynx-js/rspeedy`
+              .prepend({
+                layer: LAYERS.BACKGROUND,
+                import: '@rspack/core/hot/dev-server',
+              })
+              .prepend({
+                layer: LAYERS.BACKGROUND,
+                import: '@lynx-js/webpack-dev-transport/client',
+              })
+              // This is aliased in `./refresh.ts`
+              .prepend({
+                layer: LAYERS.BACKGROUND,
+                import: '@lynx-js/react/refresh',
+              })
+          },
+        )
         .end()
         .plugin(`${PLUGIN_NAME_TEMPLATE}-${entryName}`)
         .use(LynxTemplatePlugin, [{

packages/rspeedy/plugin-react/test/config.test.ts

@@ -1422,6 +1422,93 @@ describe('Config', () => {
         }
       `)
     })
+
+    test('disables hot clients when hmr and liveReload are false', async () => {
+      vi.stubEnv('NODE_ENV', 'development')
+      const { pluginReactLynx } = await import('../src/pluginReactLynx.js')
+
+      const hmrOffConfig = {
+        hmr: false,
+        liveReload: false,
+      } as const
+
+      const rsbuild = await createRspeedy({
+        rspeedyConfig: {
+          source: {
+            entry: {
+              main: './fixtures/basic.tsx',
+            },
+          },
+          environments: {
+            lynx: {
+              dev: hmrOffConfig,
+            },
+          },
+          plugins: [
+            pluginReactLynx(),
+            pluginStubRspeedyAPI(),
+          ],
+        },
+      })
+
+      const [config] = await rsbuild.initConfigs()
+
+      if (!config?.entry) {
+        expect.fail('should have config.entry')
+      }
+
+      const entry = config.entry as Record<string, { import: string[] }>
+      expect(entry['main']?.import).toEqual([
+        './fixtures/basic.tsx',
+      ])
+      expect(entry['main__main-thread']?.import).toEqual([
+        './fixtures/basic.tsx',
+      ])
+    })
+
+    test('disables css hmr when hmr is false but keeps live reload', async () => {
+      vi.stubEnv('NODE_ENV', 'development')
+      const { pluginReactLynx } = await import('../src/pluginReactLynx.js')
+
+      const rsbuild = await createRspeedy({
+        rspeedyConfig: {
+          source: {
+            entry: {
+              main: './fixtures/basic.tsx',
+            },
+          },
+          environments: {
+            lynx: {
+              dev: {
+                hmr: false,
+                liveReload: true,
+              },
+            },
+          },
+          plugins: [
+            pluginReactLynx(),
+            pluginStubRspeedyAPI(),
+          ],
+        },
+      })
+
+      const [config] = await rsbuild.initConfigs()
+
+      if (!config?.entry) {
+        expect.fail('should have config.entry')
+      }
+
+      const entry = config.entry as Record<string, { import: string[] }>
+      expect(entry['main']?.import).toEqual([
+        '@lynx-js/react/refresh',
+        '@lynx-js/webpack-dev-transport/client',
+        '@rspack/core/hot/dev-server',
+        './fixtures/basic.tsx',
+      ])
+      expect(entry['main__main-thread']?.import).toEqual([
+        './fixtures/basic.tsx',
+      ])
+    })
   })
 
   describe('Output SourceMap', () => {