Bugfix. Extract react imports from main bundler to vendor static files

2026-04-08 05:39:11 +01:00
parent c19b7c9607
commit 4b3a4dbc77
38 changed files with 825 additions and 253 deletions
@@ -0,0 +1,97 @@
+// plugins/react-vendor-chunk-plugin.ts
+import * as esbuild from "esbuild";
+import path from "path";
+import grabDirNames from "../../../utils/grab-dir-names";
+const { BUNEXT_VENDOR_DIR } = grabDirNames();
+const REACT_MODULES = new Set([
+    "react",
+    "react-dom",
+    "react-dom/client",
+    "react/jsx-runtime",
+    "react/jsx-dev-runtime",
+]);
+const VENDOR_BASE = "/.bunext/public/vendor";
+const REACT_ENTRIES = {
+    react: `
+    import React from "react";
+    export const {
+      Children, Component, Fragment, Profiler, PureComponent, StrictMode,
+      Suspense, cloneElement, createContext, createElement, createFactory,
+      createRef, forwardRef, isValidElement, lazy, memo, startTransition,
+      useCallback, useContext, useDebugValue, useDeferredValue, useEffect,
+      useId, useImperativeHandle, useInsertionEffect, useLayoutEffect,
+      useMemo, useReducer, useRef, useState, useSyncExternalStore,
+      useTransition, version,
+    } = React;
+    export default React;
+  `,
+    "react-dom": `
+    import ReactDOM from "react-dom";
+    export const {
+      createPortal, flushSync, findDOMNode, hydrate, render,
+      unmountComponentAtNode, version,
+    } = ReactDOM;
+    export default ReactDOM;
+  `,
+    "react-dom/client": `
+    import ReactDOMClient from "react-dom/client";
+    export const { createRoot, hydrateRoot } = ReactDOMClient;
+    export default ReactDOMClient;
+  `,
+    "react/jsx-runtime": `
+    import JSXRuntime from "react/jsx-runtime";
+    export const { jsx, jsxs, Fragment } = JSXRuntime;
+    export default JSXRuntime;
+  `,
+    "react/jsx-dev-runtime": `
+    import JSXDevRuntime from "react/jsx-dev-runtime";
+    export const { jsxDEV, Fragment } = JSXDevRuntime;
+    export default JSXDevRuntime;
+  `,
+};
+// Map bare specifier -> browser path
+function vendorPath(specifier) {
+    const filename = specifier.replace(/\//g, "_") + ".js";
+    return `${VENDOR_BASE}/${filename}`;
+}
+function vendorOutfile(specifier) {
+    const filename = specifier.replace(/\//g, "_") + ".js";
+    return path.join(BUNEXT_VENDOR_DIR, filename);
+}
+export default function reactVendorChunkPlugin() {
+    let vendorReady;
+    return {
+        name: "react-vendor-chunk",
+        setup(build) {
+            vendorReady ??= buildAllVendorChunks(build.initialOptions);
+            build.onResolve({ filter: /^react(-dom)?(\/.*)?$/ }, async (args) => {
+                const bare = args.path.replace(/\/index(\.m?js)?$/, "");
+                if (!(bare in REACT_ENTRIES))
+                    return;
+                await vendorReady;
+                return {
+                    path: vendorPath(bare),
+                    external: true,
+                };
+            });
+        },
+    };
+}
+async function buildAllVendorChunks(parentOptions) {
+    await Promise.all(Object.entries(REACT_ENTRIES).map(([specifier, contents]) => esbuild.build({
+        stdin: {
+            contents,
+            resolveDir: process.cwd(),
+            loader: "tsx",
+        },
+        outfile: vendorOutfile(specifier),
+        bundle: true,
+        minify: parentOptions.minify,
+        format: "esm",
+        target: parentOptions.target,
+        platform: "browser",
+        define: parentOptions.define,
+        mainFields: ["module", "main"],
+        conditions: ["import", "default"],
+    })));
+}