How to use the @lwc/shared.isFalse function in @lwc/shared

function runDisconnectedCallback(vm: VM) {
    if (process.env.NODE_ENV !== 'production') {
        assert.isTrue(vm.state !== VMState.disconnected, `${vm} must be inserted.`);
    }
    if (isFalse(vm.isDirty)) {
        // this guarantees that if the component is reused/reinserted,
        // it will be re-rendered because we are disconnecting the reactivity
        // linking, so mutations are not automatically reflected on the state
        // of disconnected components.
        vm.isDirty = true;
    }
    vm.state = VMState.disconnected;
    // reporting disconnection
    const { disconnected } = Services;
    if (disconnected) {
        invokeServiceHook(vm, disconnected);
    }
    const { disconnectedCallback } = vm.def;
    if (!isUndefined(disconnectedCallback)) {
        if (process.env.NODE_ENV !== 'production') {
            startMeasure('disconnectedCallback', vm);

);
                assert.isFalse(
                    isBeingConstructed(vm),
                    `Failed to construct '${getComponentTag(
                        vm
                    )}': The result must not have attributes.`
                );
                assert.invariant(
                    !isObject(newValue) || isNull(newValue),
                    `Invalid value "${newValue}" for "${propName}" of ${vm}. Value cannot be an object, must be a primitive value.`
                );
            }

            if (newValue !== vm.cmpProps[propName]) {
                vm.cmpProps[propName] = newValue;
                if (isFalse(vm.isDirty)) {
                    // perf optimization to skip this step if not in the DOM
                    valueMutated(this, propName);
                }
            }
            return set.call(vm.elm, newValue);
        },
    };

for (let i = 0, len = children.length; i < len; i += 1) {
        const vnode = children[i];
        if (isNull(vnode)) {
            continue;
        }
        const { data } = vnode;
        const slotName = ((data.attrs && data.attrs.slot) || '') as string;
        const vnodes: VNodes = (cmpSlots[slotName] = cmpSlots[slotName] || []);
        // re-keying the vnodes is necessary to avoid conflicts with default content for the slot
        // which might have similar keys. Each vnode will always have a key that
        // starts with a numeric character from compiler. In this case, we add a unique
        // notation for slotted vnodes keys, e.g.: `@foo:1:1`
        vnode.key = `@${slotName}:${vnode.key}`;
        ArrayPush.call(vnodes, vnode);
    }
    if (isFalse(vm.isDirty)) {
        // We need to determine if the old allocation is really different from the new one
        // and mark the vm as dirty
        const oldKeys = keys(oldSlots);
        if (oldKeys.length !== keys(cmpSlots).length) {
            markComponentAsDirty(vm);
            return;
        }
        for (let i = 0, len = oldKeys.length; i < len; i += 1) {
            const key = oldKeys[i];
            if (isUndefined(cmpSlots[key]) || oldSlots[key].length !== cmpSlots[key].length) {
                markComponentAsDirty(vm);
                return;
            }
            const oldVNodes = oldSlots[key];
            const vnodes = cmpSlots[key];
            for (let j = 0, a = cmpSlots[key].length; j < a; j += 1) {

!isInvokingRender,
                    `${vmBeingRendered}.render() method has side effects on the state of ${vm}.${toString(
                        key
                    )}`
                );
                assert.invariant(
                    !isUpdatingTemplate,
                    `Updating the template of ${vmBeingRendered} has side effects on the state of ${vm}.${toString(
                        key
                    )}`
                );
            }
            const reactiveOrAnyValue = reactiveMembrane.getProxy(newValue);
            if (reactiveOrAnyValue !== vm.cmpTrack[key]) {
                vm.cmpTrack[key] = reactiveOrAnyValue;
                if (isFalse(vm.isDirty)) {
                    // perf optimization to skip this step if the track property is on a component that is already dirty
                    valueMutated(this, key);
                }
            }
        },
        enumerable,

set(this: ComponentInterface, newValue: any) {
            const vm = getAssociatedVM(this);
            if (newValue !== vm.cmpTrack[key]) {
                vm.cmpTrack[key] = newValue;
                if (isFalse(vm.isDirty)) {
                    valueMutated(this, key);
                }
            }
        },
        enumerable: true,

value(this: Node, newChild: Node, oldChild: Node) {
                if (this instanceof Element && isFalse(options.isPortal)) {
                    logError(portalRestrictionErrorMessage('replaceChild', 'method'));
                }
                return replaceChild.call(this, newChild, oldChild);
            },
        }),