[FIX] component: tricky concurrency issue

This is a really interesting problem: there was a situation where a
component would not have an event handler properly bound. The reason was
that we were in a situation where the scheduler task queue was flushed
at an unfortunate timing:

- parent component template is rendered
- subcomponent is prepared:
   - sub component is willStarted
   - it is rendered (so, fiber counter is set to 0)
- scheduler task queue is flushed => we patch the DOM
- the code registered in the __prepare.then(handler) is executed, which
  add the createHook to the vnode (but after the dom is patched)

Usually, the last two steps happen in a different order, but in an
environment with connected components, we sometimes flush the task queue
at various moments, so some code could be executed between the end of
__prepare and the registered handler.

The fix is interesting: we give a callback to the __prepare function
instead of registering a .then handler to the deferred.  This callback
is then guaranteed to be called at exactly the proper timing.

Thanks seb for the hard work of finding the root cause of this issue

closes #520
This commit is contained in:
Géry Debongnie
2019-12-02 15:47:49 +01:00
committed by aab-odoo
parent 556a4644f0
commit ed4ab51c17
9 changed files with 836 additions and 875 deletions
+6 -4
View File
@@ -304,7 +304,7 @@ export class Component<T extends Env, Props extends {}> {
const fiber = new Fiber(null, this, false, target);
fiber.shouldPatch = false;
if (!__owl__.vnode) {
this.__prepareAndRender(fiber);
this.__prepareAndRender(fiber, () => {});
} else {
this.__render(fiber);
}
@@ -544,7 +544,7 @@ export class Component<T extends Env, Props extends {}> {
* subcomponent is created. It gets its scope and vars, if any, from the
* parent template.
*/
__prepare(parentFiber: Fiber, scope: any, vars: any) {
__prepare(parentFiber: Fiber, scope: any, vars: any, cb: CallableFunction): Fiber {
this.__owl__.scope = scope;
this.__owl__.vars = vars;
const fiber = new Fiber(parentFiber, this, parentFiber.force, null);
@@ -555,7 +555,8 @@ export class Component<T extends Env, Props extends {}> {
parentFiber.lastChild!.sibling = fiber;
}
parentFiber.lastChild = fiber;
return this.__prepareAndRender(fiber);
this.__prepareAndRender(fiber, cb);
return fiber;
}
__getTemplate(qweb: QWeb): string {
@@ -577,7 +578,7 @@ export class Component<T extends Env, Props extends {}> {
}
return p._template;
}
async __prepareAndRender(fiber: Fiber) {
async __prepareAndRender(fiber: Fiber, cb: CallableFunction) {
try {
await Promise.all([this.willStart(), this.__owl__.willStartCB && this.__owl__.willStartCB()]);
} catch (e) {
@@ -589,6 +590,7 @@ export class Component<T extends Env, Props extends {}> {
}
if (!fiber.isCompleted) {
this.__render(fiber);
cb();
}
}
+3 -6
View File
@@ -226,7 +226,6 @@ QWeb.addDirective({
let propStr = Object.keys(props)
.map(k => k + ":" + props[k])
.join(",");
let defID = ctx.generateID();
let componentID = ctx.generateID();
const templateKey = ctx.generateTemplateKey();
@@ -439,16 +438,14 @@ QWeb.addDirective({
}
}
ctx.addLine(`let def${defID} = w${componentID}.__prepare(extra.fiber, ${scopeVars});`);
ctx.addLine(
`let fiber = w${componentID}.__prepare(extra.fiber, ${scopeVars}, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; ${createHook}});`
);
// hack: specify empty remove hook to prevent the node from being removed from the DOM
const insertHook = refExpr ? `insert(vn) {${refExpr}},` : "";
ctx.addLine(
`let pvnode = h('dummy', {key: ${templateKey}, hook: {${insertHook}remove() {},destroy(vn) {${finalizeComponentCode}}}});`
);
ctx.addLine(`const fiber = w${componentID}.__owl__.currentFiber;`);
ctx.addLine(
`def${defID}.then(function () { if (fiber.isCompleted) { return; } const vnode = fiber.vnode; pvnode.sel = vnode.sel; ${createHook}});`
);
if (registerCode) {
ctx.addLine(registerCode);
}
+66 -72
View File
@@ -11,37 +11,35 @@ exports[`animations t-transition combined with component 1`] = `
let c1 = [], p1 = {key:1};
var vn1 = h('div', p1, c1);
//COMPONENT
let k4 = \`__5__\`;
let w3 = k4 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k4]] : false;
let props3 = {};
if (w3 && w3.__owl__.currentFiber && !w3.__owl__.vnode) {
w3.destroy();
w3 = false;
let k3 = \`__4__\`;
let w2 = k3 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k3]] : false;
let props2 = {};
if (w2 && w2.__owl__.currentFiber && !w2.__owl__.vnode) {
w2.destroy();
w2 = false;
}
if (w3) {
w3.__updateProps(props3, extra.fiber, undefined, undefined);
let pvnode = w3.__owl__.pvnode;
if (w2) {
w2.__updateProps(props2, extra.fiber, undefined, undefined);
let pvnode = w2.__owl__.pvnode;
c1.push(pvnode);
} else {
let componentKey3 = \`Child\`;
let W3 = context.constructor.components[componentKey3] || QWeb.components[componentKey3]|| context['Child'];
if (!W3) {throw new Error('Cannot find the definition of component \\"' + componentKey3 + '\\"')}
w3 = new W3(parent, props3);
const __patch3 = w3.__patch;
w3.__patch = fiber => {__patch3.call(w3, fiber); if(!w3.__owl__.transitionInserted){w3.__owl__.transitionInserted = true;utils.transitionInsert(w3.__owl__.vnode, 'chimay');}};
parent.__owl__.cmap[k4] = w3.__owl__.id;
let def2 = w3.__prepare(extra.fiber, undefined, undefined);
let pvnode = h('dummy', {key: k4, hook: {remove() {},destroy(vn) {let finalize = () => {
w3.destroy();
let componentKey2 = \`Child\`;
let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| context['Child'];
if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
w2 = new W2(parent, props2);
const __patch2 = w2.__patch;
w2.__patch = fiber => {__patch2.call(w2, fiber); if(!w2.__owl__.transitionInserted){w2.__owl__.transitionInserted = true;utils.transitionInsert(w2.__owl__.vnode, 'chimay');}};
parent.__owl__.cmap[k3] = w2.__owl__.id;
let fiber = w2.__prepare(extra.fiber, undefined, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
let pvnode = h('dummy', {key: k3, hook: {remove() {},destroy(vn) {let finalize = () => {
w2.destroy();
};
delete w3.__owl__.transitionInserted;
delete w2.__owl__.transitionInserted;
utils.transitionRemove(vn, 'chimay', finalize);}}});
const fiber = w3.__owl__.currentFiber;
def2.then(function () { if (fiber.isCompleted) { return; } const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
c1.push(pvnode);
w3.__owl__.pvnode = pvnode;
w2.__owl__.pvnode = pvnode;
}
w3.__owl__.parentLastFiberId = extra.fiber.id;
w2.__owl__.parentLastFiberId = extra.fiber.id;
return vn1;
}"
`;
@@ -58,37 +56,35 @@ exports[`animations t-transition combined with t-component and t-if 1`] = `
var vn1 = h('div', p1, c1);
if (context['state'].display) {
//COMPONENT
let k4 = \`__5__\`;
let w3 = k4 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k4]] : false;
let props3 = {};
if (w3 && w3.__owl__.currentFiber && !w3.__owl__.vnode) {
w3.destroy();
w3 = false;
let k3 = \`__4__\`;
let w2 = k3 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k3]] : false;
let props2 = {};
if (w2 && w2.__owl__.currentFiber && !w2.__owl__.vnode) {
w2.destroy();
w2 = false;
}
if (w3) {
w3.__updateProps(props3, extra.fiber, undefined, undefined);
let pvnode = w3.__owl__.pvnode;
if (w2) {
w2.__updateProps(props2, extra.fiber, undefined, undefined);
let pvnode = w2.__owl__.pvnode;
c1.push(pvnode);
} else {
let componentKey3 = \`Child\`;
let W3 = context.constructor.components[componentKey3] || QWeb.components[componentKey3]|| context['Child'];
if (!W3) {throw new Error('Cannot find the definition of component \\"' + componentKey3 + '\\"')}
w3 = new W3(parent, props3);
const __patch3 = w3.__patch;
w3.__patch = fiber => {__patch3.call(w3, fiber); if(!w3.__owl__.transitionInserted){w3.__owl__.transitionInserted = true;utils.transitionInsert(w3.__owl__.vnode, 'chimay');}};
parent.__owl__.cmap[k4] = w3.__owl__.id;
let def2 = w3.__prepare(extra.fiber, undefined, undefined);
let pvnode = h('dummy', {key: k4, hook: {remove() {},destroy(vn) {let finalize = () => {
w3.destroy();
let componentKey2 = \`Child\`;
let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| context['Child'];
if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
w2 = new W2(parent, props2);
const __patch2 = w2.__patch;
w2.__patch = fiber => {__patch2.call(w2, fiber); if(!w2.__owl__.transitionInserted){w2.__owl__.transitionInserted = true;utils.transitionInsert(w2.__owl__.vnode, 'chimay');}};
parent.__owl__.cmap[k3] = w2.__owl__.id;
let fiber = w2.__prepare(extra.fiber, undefined, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
let pvnode = h('dummy', {key: k3, hook: {remove() {},destroy(vn) {let finalize = () => {
w2.destroy();
};
delete w3.__owl__.transitionInserted;
delete w2.__owl__.transitionInserted;
utils.transitionRemove(vn, 'chimay', finalize);}}});
const fiber = w3.__owl__.currentFiber;
def2.then(function () { if (fiber.isCompleted) { return; } const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
c1.push(pvnode);
w3.__owl__.pvnode = pvnode;
w2.__owl__.pvnode = pvnode;
}
w3.__owl__.parentLastFiberId = extra.fiber.id;
w2.__owl__.parentLastFiberId = extra.fiber.id;
}
return vn1;
}"
@@ -106,37 +102,35 @@ exports[`animations t-transition combined with t-component, remove and re-add be
var vn1 = h('div', p1, c1);
if (context['state'].flag) {
//COMPONENT
let k4 = \`__5__\`;
let w3 = k4 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k4]] : false;
let props3 = {};
if (w3 && w3.__owl__.currentFiber && !w3.__owl__.vnode) {
w3.destroy();
w3 = false;
let k3 = \`__4__\`;
let w2 = k3 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k3]] : false;
let props2 = {};
if (w2 && w2.__owl__.currentFiber && !w2.__owl__.vnode) {
w2.destroy();
w2 = false;
}
if (w3) {
w3.__updateProps(props3, extra.fiber, undefined, undefined);
let pvnode = w3.__owl__.pvnode;
if (w2) {
w2.__updateProps(props2, extra.fiber, undefined, undefined);
let pvnode = w2.__owl__.pvnode;
c1.push(pvnode);
} else {
let componentKey3 = \`Child\`;
let W3 = context.constructor.components[componentKey3] || QWeb.components[componentKey3]|| context['Child'];
if (!W3) {throw new Error('Cannot find the definition of component \\"' + componentKey3 + '\\"')}
w3 = new W3(parent, props3);
const __patch3 = w3.__patch;
w3.__patch = fiber => {__patch3.call(w3, fiber); if(!w3.__owl__.transitionInserted){w3.__owl__.transitionInserted = true;utils.transitionInsert(w3.__owl__.vnode, 'chimay');}};
parent.__owl__.cmap[k4] = w3.__owl__.id;
let def2 = w3.__prepare(extra.fiber, undefined, undefined);
let pvnode = h('dummy', {key: k4, hook: {remove() {},destroy(vn) {let finalize = () => {
w3.destroy();
let componentKey2 = \`Child\`;
let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| context['Child'];
if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
w2 = new W2(parent, props2);
const __patch2 = w2.__patch;
w2.__patch = fiber => {__patch2.call(w2, fiber); if(!w2.__owl__.transitionInserted){w2.__owl__.transitionInserted = true;utils.transitionInsert(w2.__owl__.vnode, 'chimay');}};
parent.__owl__.cmap[k3] = w2.__owl__.id;
let fiber = w2.__prepare(extra.fiber, undefined, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
let pvnode = h('dummy', {key: k3, hook: {remove() {},destroy(vn) {let finalize = () => {
w2.destroy();
};
delete w3.__owl__.transitionInserted;
delete w2.__owl__.transitionInserted;
utils.transitionRemove(vn, 'chimay', finalize);}}});
const fiber = w3.__owl__.currentFiber;
def2.then(function () { if (fiber.isCompleted) { return; } const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
c1.push(pvnode);
w3.__owl__.pvnode = pvnode;
w2.__owl__.pvnode = pvnode;
}
w3.__owl__.parentLastFiberId = extra.fiber.id;
w2.__owl__.parentLastFiberId = extra.fiber.id;
}
return vn1;
}"
+6 -6
View File
@@ -254,11 +254,11 @@ describe("animations", () => {
widget.state.display = false;
patchNextFrame(cb => {
expect(fixture.innerHTML).toBe(
'<div><span class="chimay-leave chimay-leave-active" data-owl-key="__5__">blue</span></div>'
'<div><span class="chimay-leave chimay-leave-active" data-owl-key="__4__">blue</span></div>'
);
cb();
expect(fixture.innerHTML).toBe(
'<div><span class="chimay-leave-active chimay-leave-to" data-owl-key="__5__">blue</span></div>'
'<div><span class="chimay-leave-active chimay-leave-to" data-owl-key="__4__">blue</span></div>'
);
def.resolve();
});
@@ -371,7 +371,7 @@ describe("animations", () => {
await def; // wait for the mocked repaint to be done
widget.el!.querySelector("span")!.dispatchEvent(new Event("transitionend")); // mock end of css transition
expect(fixture.innerHTML).toBe('<div><span class="" data-owl-key="__5__">blue</span></div>');
expect(fixture.innerHTML).toBe('<div><span class="" data-owl-key="__4__">blue</span></div>');
});
test("transitionInsert is called the correct amount of times", async () => {
@@ -405,14 +405,14 @@ describe("animations", () => {
widget.state.flag = false;
await nextTick();
expect(fixture.innerHTML).toBe(
'<div><span class="chimay-leave-active chimay-leave-to" data-owl-key="__5__">blue</span></div>'
'<div><span class="chimay-leave-active chimay-leave-to" data-owl-key="__4__">blue</span></div>'
);
expect(QWeb.utils.transitionInsert).toBeCalledTimes(1);
widget.state.flag = true;
await nextTick();
expect(fixture.innerHTML).toBe(
'<div><span class="chimay-enter-active chimay-enter-to" data-owl-key="__5__">blue</span></div>'
'<div><span class="chimay-enter-active chimay-enter-to" data-owl-key="__4__">blue</span></div>'
);
expect(QWeb.utils.transitionInsert).toBeCalledTimes(2);
@@ -423,7 +423,7 @@ describe("animations", () => {
expect(QWeb.utils.transitionInsert).toBeCalledTimes(3);
widget.el!.querySelector("span")!.dispatchEvent(new Event("transitionend"));
expect(fixture.innerHTML).toBe('<div><span class="" data-owl-key="__5__">blue</span></div>');
expect(fixture.innerHTML).toBe('<div><span class="" data-owl-key="__4__">blue</span></div>');
QWeb.utils.transitionInsert = oldTransitionInsert;
});
});
File diff suppressed because it is too large Load Diff
@@ -11,31 +11,29 @@ exports[`props validation props are validated in dev mode (code snapshot) 1`] =
let c1 = [], p1 = {key:1};
var vn1 = h('div', p1, c1);
//COMPONENT
let k4 = \`__5__\`;
let w3 = k4 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k4]] : false;
let props3 = {message:1};
if (w3 && w3.__owl__.currentFiber && !w3.__owl__.vnode) {
w3.destroy();
w3 = false;
let k3 = \`__4__\`;
let w2 = k3 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k3]] : false;
let props2 = {message:1};
if (w2 && w2.__owl__.currentFiber && !w2.__owl__.vnode) {
w2.destroy();
w2 = false;
}
if (w3) {
w3.__updateProps(props3, extra.fiber, undefined, undefined);
let pvnode = w3.__owl__.pvnode;
if (w2) {
w2.__updateProps(props2, extra.fiber, undefined, undefined);
let pvnode = w2.__owl__.pvnode;
c1.push(pvnode);
} else {
let componentKey3 = \`Child\`;
let W3 = context.constructor.components[componentKey3] || QWeb.components[componentKey3]|| context['Child'];
if (!W3) {throw new Error('Cannot find the definition of component \\"' + componentKey3 + '\\"')}
w3 = new W3(parent, props3);
parent.__owl__.cmap[k4] = w3.__owl__.id;
let def2 = w3.__prepare(extra.fiber, undefined, undefined);
let pvnode = h('dummy', {key: k4, hook: {remove() {},destroy(vn) {w3.destroy();}}});
const fiber = w3.__owl__.currentFiber;
def2.then(function () { if (fiber.isCompleted) { return; } const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
let componentKey2 = \`Child\`;
let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| context['Child'];
if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
w2 = new W2(parent, props2);
parent.__owl__.cmap[k3] = w2.__owl__.id;
let fiber = w2.__prepare(extra.fiber, undefined, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
let pvnode = h('dummy', {key: k3, hook: {remove() {},destroy(vn) {w2.destroy();}}});
c1.push(pvnode);
w3.__owl__.pvnode = pvnode;
w2.__owl__.pvnode = pvnode;
}
w3.__owl__.parentLastFiberId = extra.fiber.id;
w2.__owl__.parentLastFiberId = extra.fiber.id;
return vn1;
}"
`;
+32
View File
@@ -1849,6 +1849,38 @@ describe("other directives with t-component", () => {
expect(widget.n).toBe(1);
});
test("t-on works, even if flush is called many times", async () => {
let flag = false;
let mounted = false;
class Child extends Component<any, any> {
static template = xml`<span>child</span>`;
mounted() {
mounted = true;
}
}
class Parent extends Component<any, any> {
static template = xml`<div><Child t-on-click="doSomething"/></div>`;
static components = { Child };
doSomething() {
flag = true;
}
}
const parent = new Parent();
parent.mount(fixture);
while (!mounted) {
await nextMicroTick();
Component.scheduler.flush();
}
expect(fixture.innerHTML).toBe("<div><span>child</span></div>");
expect(flag).toBe(false);
fixture.querySelector("span")!.click();
expect(flag).toBe(true);
});
test("t-on with handler bound to argument", async () => {
expect.assertions(3);
env.qweb.addTemplates(`
+10 -10
View File
@@ -6,16 +6,16 @@ exports[`Link component can render simple cases 1`] = `
let utils = this.constructor.utils;
let owner = context;
var h = this.h;
let _6 = utils.toObj({'router-link-active':context['isActive']});
var _7 = context['href'];
let c8 = [], p8 = {key:8,attrs:{href: _7},class:_6,on:{}};
var vn8 = h('a', p8, c8);
extra.handlers['click' + 8] = extra.handlers['click' + 8] || function (e) {const fn = context['navigate'];if (fn) { fn.call(owner, e); } else { context.navigate; }};
p8.on['click'] = extra.handlers['click' + 8];
const slot9 = this.constructor.slots[context.__owl__.slotId + '_' + 'default'];
if (slot9) {
slot9.call(this, context.__owl__.parent, Object.assign({}, extra, {parentNode: c8, vars: extra.vars, parent: extra.parent || owner}));
let _5 = utils.toObj({'router-link-active':context['isActive']});
var _6 = context['href'];
let c7 = [], p7 = {key:7,attrs:{href: _6},class:_5,on:{}};
var vn7 = h('a', p7, c7);
extra.handlers['click' + 7] = extra.handlers['click' + 7] || function (e) {const fn = context['navigate'];if (fn) { fn.call(owner, e); } else { context.navigate; }};
p7.on['click'] = extra.handlers['click' + 7];
const slot8 = this.constructor.slots[context.__owl__.slotId + '_' + 'default'];
if (slot8) {
slot8.call(this, context.__owl__.parent, Object.assign({}, extra, {parentNode: c7, vars: extra.vars, parent: extra.parent || owner}));
}
return vn8;
return vn7;
}"
`;
@@ -10,35 +10,33 @@ exports[`RouteComponent can render simple cases 1`] = `
let result;
var h = this.h;
if (context['routeComponent']) {
const nodeKey6 = context['env'].router.currentRouteName;
const nodeKey5 = context['env'].router.currentRouteName;
//COMPONENT
let k9 = \`__10__\` + nodeKey6;
let w8 = k9 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k9]] : false;
let vn11 = {};
result = vn11;
let props8 = Object.assign({}, context['env'].router.currentParams);
if (w8 && w8.__owl__.currentFiber && !w8.__owl__.vnode) {
w8.destroy();
w8 = false;
let k7 = \`__8__\` + nodeKey5;
let w6 = k7 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k7]] : false;
let vn9 = {};
result = vn9;
let props6 = Object.assign({}, context['env'].router.currentParams);
if (w6 && w6.__owl__.currentFiber && !w6.__owl__.vnode) {
w6.destroy();
w6 = false;
}
if (w8) {
w8.__updateProps(props8, extra.fiber, undefined, undefined);
let pvnode = w8.__owl__.pvnode;
utils.defineProxy(vn11, pvnode);
if (w6) {
w6.__updateProps(props6, extra.fiber, undefined, undefined);
let pvnode = w6.__owl__.pvnode;
utils.defineProxy(vn9, pvnode);
} else {
let componentKey8 = \`routeComponent\`;
let W8 = context.constructor.components[componentKey8] || QWeb.components[componentKey8]|| context['routeComponent'];
if (!W8) {throw new Error('Cannot find the definition of component \\"' + componentKey8 + '\\"')}
w8 = new W8(parent, props8);
parent.__owl__.cmap[k9] = w8.__owl__.id;
let def7 = w8.__prepare(extra.fiber, undefined, undefined);
let pvnode = h('dummy', {key: k9, hook: {remove() {},destroy(vn) {w8.destroy();}}});
const fiber = w8.__owl__.currentFiber;
def7.then(function () { if (fiber.isCompleted) { return; } const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
utils.defineProxy(vn11, pvnode);
w8.__owl__.pvnode = pvnode;
let componentKey6 = \`routeComponent\`;
let W6 = context.constructor.components[componentKey6] || QWeb.components[componentKey6]|| context['routeComponent'];
if (!W6) {throw new Error('Cannot find the definition of component \\"' + componentKey6 + '\\"')}
w6 = new W6(parent, props6);
parent.__owl__.cmap[k7] = w6.__owl__.id;
let fiber = w6.__prepare(extra.fiber, undefined, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
let pvnode = h('dummy', {key: k7, hook: {remove() {},destroy(vn) {w6.destroy();}}});
utils.defineProxy(vn9, pvnode);
w6.__owl__.pvnode = pvnode;
}
w8.__owl__.parentLastFiberId = extra.fiber.id;
w6.__owl__.parentLastFiberId = extra.fiber.id;
}
return result;
}"