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Cleanup KnockoutJS and use ECMASCRIPT_2018 for its closure compiler

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This commit is contained in:
djmaze 2021-10-01 17:36:21 +02:00
parent bcc3dc51ef
commit 4a403df168
6 changed files with 136 additions and 217 deletions
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81
vendors/knockout/src/components/componentBinding.js vendored
View file

@ -25,14 +25,12 @@
ko.utils.domNodeDisposal.addDisposeCallback(element, disposeAssociatedComponentViewModel);
ko.computed(() => {
var value = ko.utils.unwrapObservable(valueAccessor()),
componentName, componentParams;
var componentName = ko.utils.unwrapObservable(valueAccessor()),
componentParams;
if (typeof value === 'string') {
componentName = value;
} else {
componentName = ko.utils.unwrapObservable(value['name']);
componentParams = ko.utils.unwrapObservable(value['params']);
if (typeof componentName !== 'string') {
componentParams = ko.utils.unwrapObservable(componentName['params']);
componentName = ko.utils.unwrapObservable(componentName['name']);
}
if (!componentName) {
@ -43,39 +41,33 @@
var loadingOperationId = currentLoadingOperationId = ++componentLoadingOperationUniqueId;
ko.components.get(componentName, componentDefinition => {
// If this is not the current load operation for this element, ignore it.
if (currentLoadingOperationId !== loadingOperationId) {
return;
}
// If this is the current load operation for this element
if (currentLoadingOperationId === loadingOperationId) {
// Clean up previous state
disposeAssociatedComponentViewModel();
// Clean up previous state
disposeAssociatedComponentViewModel();
// Instantiate and bind new component. Implicitly this cleans any old DOM nodes.
if (!componentDefinition) {
throw new Error('Unknown component \'' + componentName + '\'');
}
// cloneTemplateIntoElement
var template = componentDefinition['template'];
if (!template) {
throw new Error('Component \'' + componentName + '\' has no template');
}
ko.virtualElements.setDomNodeChildren(element, ko.utils.cloneNodes(template));
// Instantiate and bind new component. Implicitly this cleans any old DOM nodes.
if (!componentDefinition) {
throw new Error('Unknown component \'' + componentName + '\'');
}
cloneTemplateIntoElement(componentName, componentDefinition, element);
var componentInfo = {
'element': element,
'templateNodes': originalChildNodes
};
var componentViewModel = createViewModel(componentDefinition, componentParams, componentInfo),
childBindingContext = asyncContext['createChildContext'](componentViewModel, {
'extend': ctx => {
ctx['$component'] = componentViewModel;
ctx['$componentTemplateNodes'] = originalChildNodes;
}
currentViewModel = componentDefinition['createViewModel'](componentParams, {
'element': element,
'templateNodes': originalChildNodes
});
if (componentViewModel && componentViewModel['koDescendantsComplete']) {
afterRenderSub = ko.bindingEvent.subscribe(element, ko.bindingEvent.descendantsComplete, componentViewModel['koDescendantsComplete'], componentViewModel);
ko.applyBindingsToDescendants(asyncContext['createChildContext'](currentViewModel, {
'extend': ctx => {
ctx['$component'] = currentViewModel;
ctx['$componentTemplateNodes'] = originalChildNodes;
}
}), element);
}
currentViewModel = componentViewModel;
ko.applyBindingsToDescendants(childBindingContext, element);
});
}, { disposeWhenNodeIsRemoved: element });
@ -85,21 +77,4 @@
ko.virtualElements.allowedBindings['component'] = true;
function cloneTemplateIntoElement(componentName, componentDefinition, element) {
var template = componentDefinition['template'];
if (!template) {
throw new Error('Component \'' + componentName + '\' has no template');
}
var clonedNodesArray = ko.utils.cloneNodes(template);
ko.virtualElements.setDomNodeChildren(element, clonedNodesArray);
}
function createViewModel(componentDefinition, componentParams, componentInfo) {
var componentViewModelFactory = componentDefinition['createViewModel'];
return componentViewModelFactory
? componentViewModelFactory.call(componentDefinition, componentParams, componentInfo)
: componentParams; // Template-only component
}
})();

2
vendors/knockout/src/subscribables/dependentObservable.js vendored
View file

@ -478,7 +478,7 @@ ko.pureComputed = (evaluatorFunctionOrOptions) => {
if (typeof evaluatorFunctionOrOptions === 'function') {
return ko.computed(evaluatorFunctionOrOptions, {'pure':true});
}
evaluatorFunctionOrOptions = ko.utils.extend({}, evaluatorFunctionOrOptions); // make a copy of the parameter object
evaluatorFunctionOrOptions = { ...evaluatorFunctionOrOptions }; // make a copy of the parameter object
evaluatorFunctionOrOptions['pure'] = true;
return ko.computed(evaluatorFunctionOrOptions);
};

21
vendors/knockout/src/utils.js vendored
View file

@ -1,21 +1,8 @@
ko.utils = {
extend: (target, source) => {
source && Object.entries(source).forEach(prop => target[prop[0]] = prop[1]);
return target;
},
extend: (target, source) => source ? Object.assign(target, source) : target,
objectForEach: (obj, action) => obj && Object.entries(obj).forEach(prop => action(prop[0], prop[1])),
objectMap: (source, mapping, mappingOwner) => {
if (!source)
return source;
var target = {};
Object.entries(source).forEach(prop =>
target[prop[0]] = mapping.call(mappingOwner, prop[1], prop[0], source)
);
return target;
},
emptyDomNode: domNode => [...domNode.childNodes].forEach(child => ko.removeNode(child)),
moveCleanedNodesToContainerElement: nodes => {
@ -89,10 +76,8 @@ ko.utils = {
string.trim() :
string.toString().replace(/^[\s\xa0]+|[\s\xa0]+$/g, ''),
domNodeIsContainedBy: (node, containedByNode) =>
containedByNode.contains(node.nodeType !== 1 ? node.parentNode : node),
domNodeIsAttachedToDocument: node => ko.utils.domNodeIsContainedBy(node, node.ownerDocument.documentElement),
domNodeIsAttachedToDocument: node =>
node.ownerDocument.documentElement.contains(node.nodeType !== 1 ? node.parentNode : node),
triggerEvent: (element, eventType) => {
if (!(element && element.nodeType))