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node_modules/next/dist/server/app-render/instant-validation/instant-config.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+0 && (module.exports = {
+    anySegmentHasRuntimePrefetchEnabled: null,
+    anySegmentNeedsInstantValidationInBuild: null,
+    anySegmentNeedsInstantValidationInDev: null,
+    findSegmentsWithInstantConfig: null,
+    isPageAllowedToBlock: null,
+    resolveInstantConfigSamplesForPage: null
+});
+function _export(target, all) {
+    for(var name in all)Object.defineProperty(target, name, {
+        enumerable: true,
+        get: all[name]
+    });
+}
+_export(exports, {
+    anySegmentHasRuntimePrefetchEnabled: function() {
+        return anySegmentHasRuntimePrefetchEnabled;
+    },
+    anySegmentNeedsInstantValidationInBuild: function() {
+        return anySegmentNeedsInstantValidationInBuild;
+    },
+    anySegmentNeedsInstantValidationInDev: function() {
+        return anySegmentNeedsInstantValidationInDev;
+    },
+    findSegmentsWithInstantConfig: function() {
+        return findSegmentsWithInstantConfig;
+    },
+    isPageAllowedToBlock: function() {
+        return isPageAllowedToBlock;
+    },
+    resolveInstantConfigSamplesForPage: function() {
+        return resolveInstantConfigSamplesForPage;
+    }
+});
+const _appdirmodule = require("../../lib/app-dir-module");
+const _parseloadertree = require("../../../shared/lib/router/utils/parse-loader-tree");
+const _workasyncstorageexternal = require("../work-async-storage.external");
+async function anySegmentHasRuntimePrefetchEnabled(tree) {
+    const { mod: layoutOrPageMod } = await (0, _appdirmodule.getLayoutOrPageModule)(tree);
+    // TODO(restart-on-cache-miss): Does this work correctly for client page/layout modules?
+    const instantConfig = layoutOrPageMod ? layoutOrPageMod.unstable_instant : undefined;
+    const hasRuntimePrefetch = instantConfig && typeof instantConfig === 'object' ? instantConfig.prefetch === 'runtime' : false;
+    if (hasRuntimePrefetch) {
+        return true;
+    }
+    const { parallelRoutes } = (0, _parseloadertree.parseLoaderTree)(tree);
+    for(const parallelRouteKey in parallelRoutes){
+        const parallelRoute = parallelRoutes[parallelRouteKey];
+        const hasChildRuntimePrefetch = await anySegmentHasRuntimePrefetchEnabled(parallelRoute);
+        if (hasChildRuntimePrefetch) {
+            return true;
+        }
+    }
+    return false;
+}
+async function isPageAllowedToBlock(tree) {
+    const { mod: layoutOrPageMod } = await (0, _appdirmodule.getLayoutOrPageModule)(tree);
+    // TODO(restart-on-cache-miss): Does this work correctly for client page/layout modules?
+    const instantConfig = layoutOrPageMod ? layoutOrPageMod.unstable_instant : undefined;
+    // If we encounter a non-false instant config before a instant=false,
+    // the page isn't allowed to block. The config expresses a requirement for
+    // instant UI, so we should make sure that a static shell exists.
+    // (even if it'd use runtime prefetching for client navs)
+    if (instantConfig !== undefined) {
+        if (typeof instantConfig === 'object') {
+            return false;
+        } else if (instantConfig === false) {
+            return true;
+        }
+    }
+    const { parallelRoutes } = (0, _parseloadertree.parseLoaderTree)(tree);
+    for(const parallelRouteKey in parallelRoutes){
+        const parallelRoute = parallelRoutes[parallelRouteKey];
+        const subtreeIsBlocking = await isPageAllowedToBlock(parallelRoute);
+        if (subtreeIsBlocking) {
+            return true;
+        }
+    }
+    return false;
+}
+/**
+ * Checks if any segments in the loader tree have `instant` configs that need validating.
+ * NOTE: Client navigations call this multiple times, so we cache it.
+ * */ // Shared helper (not exported, not cached — called by the cached wrappers)
+async function anySegmentNeedsInstantValidation(rootTree, mode) {
+    const segments = await findSegmentsWithInstantConfig(rootTree);
+    // Check if there's any configs with `prefetch: 'static'` or `mode: 'instant'`.
+    // (If there's only `false`, there's no need to run validation).
+    // If any segment has `unstable_disableValidation`, we skip validation for the whole tree.
+    let needsValidation = false;
+    for (const { config } of segments){
+        if (typeof config === 'object') {
+            if (config.unstable_disableValidation === true || mode === 'dev' && config.unstable_disableDevValidation === true || mode === 'build' && config.unstable_disableBuildValidation === true) {
+                return false;
+            }
+            // do not short-circuit, some other segment might still have `unstable_disableValidation`
+            needsValidation = true;
+        }
+    }
+    return needsValidation;
+}
+const anySegmentNeedsInstantValidationInDev = cacheScopedToWorkStore(async (rootTree)=>anySegmentNeedsInstantValidation(rootTree, 'dev'));
+const anySegmentNeedsInstantValidationInBuild = cacheScopedToWorkStore(async (rootTree)=>anySegmentNeedsInstantValidation(rootTree, 'build'));
+const findSegmentsWithInstantConfig = cacheScopedToWorkStore(async (rootTree)=>{
+    const results = [];
+    async function visit(tree, path) {
+        const { mod: layoutOrPageMod } = await (0, _appdirmodule.getLayoutOrPageModule)(tree);
+        // TODO(restart-on-cache-miss): Does this work correctly for client page/layout modules?
+        const instantConfig = layoutOrPageMod ? layoutOrPageMod.unstable_instant : undefined;
+        if (instantConfig !== undefined) {
+            results.push({
+                path,
+                config: instantConfig
+            });
+        }
+        const { parallelRoutes } = (0, _parseloadertree.parseLoaderTree)(tree);
+        for(const parallelRouteKey in parallelRoutes){
+            const childTree = parallelRoutes[parallelRouteKey];
+            await visit(childTree, [
+                ...path,
+                parallelRouteKey
+            ]);
+        }
+    }
+    await visit(rootTree, []);
+    return results;
+});
+const resolveInstantConfigSamplesForPage = async (tree)=>{
+    const { mod: layoutOrPageMod } = await (0, _appdirmodule.getLayoutOrPageModule)(tree);
+    const instantConfig = layoutOrPageMod ? layoutOrPageMod.unstable_instant : undefined;
+    let samples = null;
+    if (instantConfig !== undefined && typeof instantConfig === 'object' && instantConfig.samples) {
+        samples = instantConfig.samples;
+    }
+    // The samples from inner segments override samples from outer segments,
+    // i.e. a page overrides the samples from a layout.
+    // We do not perform any merging logic.
+    const { parallelRoutes } = (0, _parseloadertree.parseLoaderTree)(tree);
+    for(const parallelRouteKey in parallelRoutes){
+        if (parallelRouteKey !== 'children') {
+            continue;
+        }
+        const childTree = parallelRoutes[parallelRouteKey];
+        const childSamples = await resolveInstantConfigSamplesForPage(childTree);
+        if (childSamples !== null) {
+            samples = childSamples;
+        }
+    }
+    return samples;
+};
+/**
+ * A simple cache wrapper for 1-argument functions.
+ * The cache will live as long as the current WorkStore,
+ * i.e. it's scoped to a single request.
+ */ function cacheScopedToWorkStore(func) {
+    const resultsPerWorkStore = new WeakMap();
+    return (arg)=>{
+        const workStore = _workasyncstorageexternal.workAsyncStorage.getStore();
+        if (!workStore) {
+            // No caching.
+            return func(arg);
+        }
+        let results = resultsPerWorkStore.get(workStore);
+        if (results && results.has(arg)) {
+            return results.get(arg);
+        }
+        const result = func(arg);
+        if (!results) {
+            results = new WeakMap();
+            resultsPerWorkStore.set(workStore, results);
+        }
+        results.set(arg, result);
+        return result;
+    };
+}
+
+//# sourceMappingURL=instant-config.js.map