Initial boiler plate project

node_modules/next/dist/esm/shared/lib/router/action-queue.js

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+import { isThenable, ACTION_REFRESH, ACTION_SERVER_ACTION, ACTION_NAVIGATE, ACTION_RESTORE } from "../../../client/components/router-reducer/router-reducer-types";
+import { reducer } from "../../../client/components/router-reducer/router-reducer";
+import React, { startTransition } from "react";
+export const ActionQueueContext = React.createContext(null);
+function runRemainingActions(actionQueue, setState) {
+    if (actionQueue.pending !== null) {
+        actionQueue.pending = actionQueue.pending.next;
+        if (actionQueue.pending !== null) {
+            // eslint-disable-next-line @typescript-eslint/no-use-before-define
+            runAction({
+                actionQueue,
+                action: actionQueue.pending,
+                setState
+            });
+        } else {
+            // No more actions are pending, check if a refresh is needed
+            if (actionQueue.needsRefresh) {
+                actionQueue.needsRefresh = false;
+                actionQueue.dispatch({
+                    type: ACTION_REFRESH,
+                    origin: window.location.origin
+                }, setState);
+            }
+        }
+    }
+}
+async function runAction(param) {
+    let { actionQueue, action, setState } = param;
+    const prevState = actionQueue.state;
+    if (!prevState) {
+        // This shouldn't happen as the state is initialized in the dispatcher if it's not set
+        throw new Error("Invariant: Router state not initialized");
+    }
+    actionQueue.pending = action;
+    const payload = action.payload;
+    const actionResult = actionQueue.action(prevState, payload);
+    function handleResult(nextState) {
+        // if we discarded this action, the state should also be discarded
+        if (action.discarded) {
+            return;
+        }
+        actionQueue.state = nextState;
+        if (actionQueue.devToolsInstance) {
+            actionQueue.devToolsInstance.send(payload, nextState);
+        }
+        runRemainingActions(actionQueue, setState);
+        action.resolve(nextState);
+    }
+    // if the action is a promise, set up a callback to resolve it
+    if (isThenable(actionResult)) {
+        actionResult.then(handleResult, (err)=>{
+            runRemainingActions(actionQueue, setState);
+            action.reject(err);
+        });
+    } else {
+        handleResult(actionResult);
+    }
+}
+function dispatchAction(actionQueue, payload, setState) {
+    let resolvers = {
+        resolve: setState,
+        reject: ()=>{}
+    };
+    // most of the action types are async with the exception of restore
+    // it's important that restore is handled quickly since it's fired on the popstate event
+    // and we don't want to add any delay on a back/forward nav
+    // this only creates a promise for the async actions
+    if (payload.type !== ACTION_RESTORE) {
+        // Create the promise and assign the resolvers to the object.
+        const deferredPromise = new Promise((resolve, reject)=>{
+            resolvers = {
+                resolve,
+                reject
+            };
+        });
+        startTransition(()=>{
+            // we immediately notify React of the pending promise -- the resolver is attached to the action node
+            // and will be called when the associated action promise resolves
+            setState(deferredPromise);
+        });
+    }
+    const newAction = {
+        payload,
+        next: null,
+        resolve: resolvers.resolve,
+        reject: resolvers.reject
+    };
+    // Check if the queue is empty
+    if (actionQueue.pending === null) {
+        // The queue is empty, so add the action and start it immediately
+        // Mark this action as the last in the queue
+        actionQueue.last = newAction;
+        runAction({
+            actionQueue,
+            action: newAction,
+            setState
+        });
+    } else if (payload.type === ACTION_NAVIGATE || payload.type === ACTION_RESTORE) {
+        // Navigations (including back/forward) take priority over any pending actions.
+        // Mark the pending action as discarded (so the state is never applied) and start the navigation action immediately.
+        actionQueue.pending.discarded = true;
+        // Mark this action as the last in the queue
+        actionQueue.last = newAction;
+        // if the pending action was a server action, mark the queue as needing a refresh once events are processed
+        if (actionQueue.pending.payload.type === ACTION_SERVER_ACTION) {
+            actionQueue.needsRefresh = true;
+        }
+        runAction({
+            actionQueue,
+            action: newAction,
+            setState
+        });
+    } else {
+        // The queue is not empty, so add the action to the end of the queue
+        // It will be started by runRemainingActions after the previous action finishes
+        if (actionQueue.last !== null) {
+            actionQueue.last.next = newAction;
+        }
+        actionQueue.last = newAction;
+    }
+}
+export function createMutableActionQueue() {
+    const actionQueue = {
+        state: null,
+        dispatch: (payload, setState)=>dispatchAction(actionQueue, payload, setState),
+        action: async (state, action)=>{
+            if (state === null) {
+                throw new Error("Invariant: Router state not initialized");
+            }
+            const result = reducer(state, action);
+            return result;
+        },
+        pending: null,
+        last: null
+    };
+    return actionQueue;
+}
+
+//# sourceMappingURL=action-queue.js.map