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2026-05-02 20:07:02 +02:00
parent ce8672e283
commit 34dc9aec52
9428 changed files with 1733330 additions and 0 deletions
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+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+Object.defineProperty(exports, "TurbopackHmr", {
+    enumerable: true,
+    get: function() {
+        return TurbopackHmr;
+    }
+});
+// How long to wait before reporting the HMR start, used to suppress irrelevant
+// `BUILDING` events. Does not impact reported latency.
+const TURBOPACK_HMR_START_DELAY_MS = 100;
+class TurbopackHmr {
+    #updatedModules;
+    #startMsSinceEpoch;
+    #lastUpdateMsSinceEpoch;
+    #deferredReportHmrStartId;
+    #reportedHmrStart;
+    constructor(){
+        this.#updatedModules = new Set();
+        this.#reportedHmrStart = false;
+    }
+    // HACK: Turbopack tends to generate a lot of irrelevant "BUILDING" actions,
+    // as it reports *any* compilation, including fully no-op/cached compilations
+    // and those unrelated to HMR. Fixing this would require significant
+    // architectural changes.
+    //
+    // Work around this by deferring any "rebuilding" message by 100ms. If we get
+    // a BUILT event within that threshold and nothing has changed, just suppress
+    // the message entirely.
+    #runDeferredReportHmrStart() {
+        if (this.#deferredReportHmrStartId != null) {
+            console.log('[Fast Refresh] rebuilding');
+            this.#reportedHmrStart = true;
+            this.#cancelDeferredReportHmrStart();
+        }
+    }
+    #cancelDeferredReportHmrStart() {
+        clearTimeout(this.#deferredReportHmrStartId);
+        this.#deferredReportHmrStartId = undefined;
+    }
+    onBuilding() {
+        this.#lastUpdateMsSinceEpoch = undefined;
+        this.#cancelDeferredReportHmrStart();
+        this.#startMsSinceEpoch = Date.now();
+        // report the HMR start after a short delay
+        this.#deferredReportHmrStartId = setTimeout(()=>this.#runDeferredReportHmrStart(), // debugging feature: don't defer/suppress noisy no-op HMR update messages
+        self.__NEXT_HMR_TURBOPACK_REPORT_NOISY_NOOP_EVENTS ? 0 : TURBOPACK_HMR_START_DELAY_MS);
+    }
+    /** Helper for other `onEvent` methods. */ #onUpdate() {
+        this.#runDeferredReportHmrStart();
+        this.#lastUpdateMsSinceEpoch = Date.now();
+    }
+    onTurbopackMessage(msg) {
+        this.#onUpdate();
+        const updatedModules = extractModulesFromTurbopackMessage(msg.data);
+        for (const module of updatedModules){
+            this.#updatedModules.add(module);
+        }
+    }
+    onServerComponentChanges() {
+        this.#onUpdate();
+    }
+    onReloadPage() {
+        this.#onUpdate();
+    }
+    onPageAddRemove() {
+        this.#onUpdate();
+    }
+    /**
+   * @returns `null` if the caller should ignore the update entirely. Returns an
+   *   object with `hasUpdates: false` if the caller should report the end of
+   *   the HMR in the browser console, but the HMR was a no-op.
+   */ onBuilt() {
+        // Check that we got *any* `TurbopackMessage`, even if
+        // `updatedModules` is empty (not everything gets recorded there).
+        //
+        // There's also a case where `onBuilt` gets called before `onBuilding`,
+        // which can happen during initial page load. Ignore that too!
+        const hasUpdates = this.#lastUpdateMsSinceEpoch != null && this.#startMsSinceEpoch != null;
+        if (!hasUpdates && !this.#reportedHmrStart) {
+            // suppress the update entirely
+            this.#cancelDeferredReportHmrStart();
+            return null;
+        }
+        this.#runDeferredReportHmrStart();
+        const result = {
+            hasUpdates,
+            updatedModules: this.#updatedModules,
+            startMsSinceEpoch: this.#startMsSinceEpoch,
+            endMsSinceEpoch: this.#lastUpdateMsSinceEpoch ?? Date.now()
+        };
+        this.#updatedModules = new Set();
+        this.#reportedHmrStart = false;
+        return result;
+    }
+}
+function extractModulesFromTurbopackMessage(data) {
+    const updatedModules = new Set();
+    const updates = Array.isArray(data) ? data : [
+        data
+    ];
+    for (const update of updates){
+        // TODO this won't capture changes to CSS since they don't result in a "merged" update
+        if (update.type !== 'partial' || update.instruction.type !== 'ChunkListUpdate' || update.instruction.merged === undefined) {
+            continue;
+        }
+        for (const mergedUpdate of update.instruction.merged){
+            for (const name of Object.keys(mergedUpdate.entries)){
+                const res = /(.*)\s+[([].*/.exec(name);
+                if (res === null) {
+                    continue;
+                }
+                updatedModules.add(res[1]);
+            }
+        }
+    }
+    return updatedModules;
+}
+
+if ((typeof exports.default === 'function' || (typeof exports.default === 'object' && exports.default !== null)) && typeof exports.default.__esModule === 'undefined') {
+  Object.defineProperty(exports.default, '__esModule', { value: true });
+  Object.assign(exports.default, exports);
+  module.exports = exports.default;
+}
+
+//# sourceMappingURL=turbopack-hot-reloader-common.js.map