taggedjs/js/tag/update/updateExistingValue.function.js

tagged template reactive html

import { processReplacementComponent } from './processFirstSubjectComponent.function.js';
import { updateExistingTagComponent } from '../../render/update/updateExistingTagComponent.function.js';
import { forceUpdateExistingValue } from './forceUpdateExistingValue.function.js';
import { createSupport } from '../createSupport.function.js';
/** Checks if value has changed before updating. Used for all tag value updates. Determines if value changed since last render */
export function updateExistingValue(newValue, // newValue
ownerSupport, contextItem) {
    // Do not continue if the value is just the same
    if (newValue === contextItem.value) {
        return;
    }
    forceUpdateExistingValue(contextItem, newValue, ownerSupport);
}
export function prepareUpdateToComponent(templater, contextItem, ownerSupport) {
    const global = contextItem.global;
    // When last value was not a component
    if (!global.newest) {
        processReplacementComponent(templater, contextItem, ownerSupport, { added: 0, removed: 0 });
        return;
    }
    const support = createSupport(templater, ownerSupport, ownerSupport.appSupport, contextItem);
    updateExistingTagComponent(ownerSupport, support, // latest value
    contextItem);
}
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