vue-hooks-api/dist/vue-hooks-api.cjs.js

Experimental React hooks implementation in Vue3

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var vue = require('vue');

/******************************************************************************
Copyright (c) Microsoft Corporation.

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
***************************************************************************** */

var __assign = function() {
    __assign = Object.assign || function __assign(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};

var HookLayout = /*    */ 2;
var HookPassive = /*   */ 4;
var currentlyRenderingFiber = null;
var workInProgressHook = null;
var currentHook = null;
function scheduleUpdateOnFiber(wip) {
    currentlyRenderingFiber.alternate = __assign({}, currentlyRenderingFiber);
    renderHooks(wip);
    currentlyRenderingFiber.update();
}
function renderHooks(wip) {
    currentlyRenderingFiber = wip;
    currentlyRenderingFiber.memorizedState = null;
    workInProgressHook = null;
}
function updateWorkInProgressHook() {
    var instance = vue.getCurrentInstance();
    if (!currentlyRenderingFiber ||
        currentlyRenderingFiber.uid !== instance.uid) {
        renderHooks(instance);
    }
    var current = currentlyRenderingFiber.alternate;
    var hook;
    if (current) {
        currentlyRenderingFiber.memorizedState = current.memorizedState;
        if (workInProgressHook) {
            // not head
            hook = workInProgressHook = workInProgressHook.next;
            currentHook = currentHook.next;
        }
        else {
            // head hook
            hook = workInProgressHook = current.memorizedState;
            currentHook = current.memorizedState;
        }
    }
    else {
        currentHook = null;
        hook = {
            memorizedState: null,
            next: null,
        };
        if (workInProgressHook) {
            // not head
            workInProgressHook = workInProgressHook.next = hook;
        }
        else {
            // head hook
            workInProgressHook = currentlyRenderingFiber.memorizedState = hook;
        }
    }
    return hook;
}
function useState(initalState) {
    return useReducer(null, initalState);
}
function useReducer(reducer, initalState) {
    var hook = updateWorkInProgressHook();
    if (!currentlyRenderingFiber.alternate) {
        hook.memorizedState = initalState;
    }
    var dispatch = dispatchReducerAction.bind(null, currentlyRenderingFiber, hook, reducer);
    return [hook.memorizedState, dispatch];
}
function dispatchReducerAction(fiber, hook, reducer, action) {
    hook.memorizedState = reducer ? reducer(hook.memorizedState) : action;
    scheduleUpdateOnFiber(fiber);
}
function updateEffectImp(hookFlags, create, deps) {
    var hook = updateWorkInProgressHook();
    if (currentHook) {
        var prevEffect = currentHook.memorizedState;
        if (deps) {
            var prevDeps = prevEffect.deps;
            if (areHookInputsEqual(deps, prevDeps)) {
                return;
            }
        }
    }
    var effect = { hookFlags: hookFlags, create: create, deps: deps };
    hook.memorizedState = effect;
    invokeHooks(hookFlags, hook);
}
function useEffect(create, deps) {
    return updateEffectImp(HookPassive, create, deps);
}
function useLayoutEffect(create, deps) {
    return updateEffectImp(HookLayout, create, deps);
}
function areHookInputsEqual(nextDeps, prevDeps) {
    if (prevDeps === null) {
        return false;
    }
    for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) {
        if (Object.is(nextDeps[i], prevDeps[i])) {
            continue;
        }
        return false;
    }
    return true;
}
function invokeHooks(hookFlags, hook) {
    if (hookFlags & HookPassive) {
        postMessage(hook.memorizedState.create);
    }
    else if (hookFlags & HookLayout) {
        vue.watchEffect(hook.memorizedState.create, { flush: "post" });
    }
}
var postMessage = function (create) {
    var _a = new MessageChannel(), port1 = _a.port1, port2 = _a.port2;
    port1.onmessage = function () {
        create();
    };
    port2.postMessage(null);
};

exports.useEffect = useEffect;
exports.useLayoutEffect = useLayoutEffect;
exports.useReducer = useReducer;
exports.useState = useState;