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() {\n    'use strict';\n\n    const refMap = new WeakMap();\n    const validityMap = new WeakMap();\n    const hiddenInputMap = new WeakMap();\n    const internalsMap = new WeakMap();\n    const validationMessageMap = new WeakMap();\n    const formsMap = new WeakMap();\n    const shadowHostsMap = new WeakMap();\n    const formElementsMap = new WeakMap();\n    const refValueMap = new WeakMap();\n    const upgradeMap = new WeakMap();\n    const shadowRootMap = new WeakMap();\n    const validationAnchorMap = new WeakMap();\n    const documentFragmentMap = new WeakMap();\n    const onSubmitMap = new WeakMap();\n\n    const observerConfig$1 = { attributes: true, attributeFilter: ['disabled'] };\n    const observer = new MutationObserver((mutationsList) => {\n        for (const mutation of mutationsList) {\n            const target = mutation.target;\n            if (target.constructor['formAssociated']) {\n                const isDisabled = target.hasAttribute('disabled');\n                target.toggleAttribute('internals-disabled', isDisabled);\n                if (target.formDisabledCallback) {\n                    target.formDisabledCallback.apply(target, [target.hasAttribute('disabled')]);\n                }\n            }\n        }\n    });\n    const removeHiddenInputs = (internals) => {\n        const hiddenInputs = hiddenInputMap.get(internals);\n        hiddenInputs.forEach(hiddenInput => {\n            hiddenInput.remove();\n        });\n        hiddenInputMap.set(internals, []);\n    };\n    const createHiddenInput = (ref, internals) => {\n        const input = document.createElement('input');\n        input.type = 'hidden';\n        input.name = ref.getAttribute('name');\n        ref.after(input);\n        hiddenInputMap.get(internals).push(input);\n        return input;\n    };\n    const initRef = (ref, internals) => {\n        hiddenInputMap.set(internals, []);\n        const isDisabled = ref.hasAttribute('disabled');\n        ref.toggleAttribute('internals-disabled', isDisabled);\n        observer.observe(ref, observerConfig$1);\n    };\n    const initLabels = (ref, labels) => {\n        if (labels.length) {\n            Array.from(labels).forEach(label => label.addEventListener('click', ref.focus.bind(ref)));\n            let firstLabelId = labels[0].id;\n            if (!labels[0].id) {\n                firstLabelId = `${labels[0].htmlFor}_Label`;\n                labels[0].id = firstLabelId;\n            }\n            ref.setAttribute('aria-labelledby', firstLabelId);\n        }\n    };\n    const setFormValidity = (form) => {\n        const nativeControlValidity = Array.from(form.elements)\n            .filter((element) => element.validity)\n            .map((element) => element.validity.valid);\n        const polyfilledValidity = Array.from(formElementsMap.get(form))\n            .filter(control => control.isConnected)\n            .map((control) => internalsMap.get(control).validity.valid);\n        const hasInvalid = [...nativeControlValidity, ...polyfilledValidity].includes(false);\n        form.toggleAttribute('internals-invalid', hasInvalid);\n        form.toggleAttribute('internals-valid', !hasInvalid);\n    };\n    const formInputCallback = (event) => {\n        setFormValidity(findParentForm(event.target));\n    };\n    const formChangeCallback = (event) => {\n        setFormValidity(findParentForm(event.target));\n    };\n    const formSubmitCallback = (event) => {\n        const form = event.target;\n        const elements = formElementsMap.get(form);\n        if (form.noValidate) {\n            return;\n        }\n        if (elements.size) {\n            const nodes = Array.from(elements);\n            const validityList = nodes\n                .reverse()\n                .map(node => {\n                const internals = internalsMap.get(node);\n                return internals.reportValidity();\n            });\n            if (validityList.includes(false)) {\n                event.stopImmediatePropagation();\n                event.stopPropagation();\n                event.preventDefault();\n            }\n            else if (onSubmitMap.get(form)) {\n                const callback = onSubmitMap.get(form);\n                const canceled = callback.call(form, event);\n                if (canceled === false) {\n                    event.preventDefault();\n                }\n            }\n        }\n    };\n    const formResetCallback = (event) => {\n        const elements = formElementsMap.get(event.target);\n        if (elements && elements.size) {\n            elements.forEach(element => {\n                if (element.constructor.formAssociated && element.formResetCallback) {\n                    element.formResetCallback.apply(element);\n                }\n            });\n        }\n    };\n    const initForm = (ref, form, internals) => {\n        if (form) {\n            if (form.onsubmit) {\n                onSubmitMap.set(form, form.onsubmit.bind(form));\n                form.onsubmit = null;\n            }\n            const formElements = formElementsMap.get(form);\n            if (formElements) {\n                formElements.add(ref);\n            }\n            else {\n                const initSet = new Set();\n                initSet.add(ref);\n                formElementsMap.set(form, initSet);\n                form.addEventListener('submit', formSubmitCallback);\n                form.addEventListener('reset', formResetCallback);\n                form.addEventListener('input', formInputCallback);\n                form.addEventListener('change', formChangeCallback);\n            }\n            formsMap.set(form, { ref, internals });\n            if (ref.constructor['formAssociated'] && ref.formAssociatedCallback) {\n                setTimeout(() => {\n                    ref.formAssociatedCallback.apply(ref, [form]);\n                }, 0);\n            }\n            setFormValidity(form);\n        }\n    };\n    const findParentForm = (elem) => {\n        let parent = elem.parentNode;\n        if (parent && parent.tagName !== 'FORM') {\n            parent = findParentForm(parent);\n        }\n        return parent;\n    };\n    const throwIfNotFormAssociated = (ref, message, ErrorType = DOMException) => {\n        if (!ref.constructor['formAssociated']) {\n            throw new ErrorType(message);\n        }\n    };\n    const overrideFormMethod = (form, returnValue, method) => {\n        const elements = formElementsMap.get(form);\n        if (elements && elements.size) {\n            elements.forEach(element => {\n                const internals = internalsMap.get(element);\n                const valid = internals[method]();\n                if (!valid) {\n                    returnValue = false;\n                }\n            });\n        }\n        return returnValue;\n    };\n    const upgradeInternals = (ref) => {\n        if (ref.constructor['formAssociated']) {\n            const internals = internalsMap.get(ref);\n            const { labels, form } = internals;\n            initLabels(ref, labels);\n            initForm(ref, form, internals);\n        }\n    };\n\n    const aom = {\n        ariaAtomic: 'aria-atomic',\n        ariaAutoComplete: 'aria-autocomplete',\n        ariaBusy: 'aria-busy',\n        ariaChecked: 'aria-checked',\n        ariaColCount: 'aria-colcount',\n        ariaColIndex: 'aria-colindex',\n        ariaColSpan: 'aria-colspan',\n        ariaCurrent: 'aria-current',\n        ariaDisabled: 'aria-disabled',\n        ariaExpanded: 'aria-expanded',\n        ariaHasPopup: 'aria-haspopup',\n        ariaHidden: 'aria-hidden',\n        ariaKeyShortcuts: 'aria-keyshortcuts',\n        ariaLabel: 'aria-label',\n        ariaLevel: 'aria-level',\n        ariaLive: 'aria-live',\n        ariaModal: 'aria-modal',\n        ariaMultiLine: 'aria-multiline',\n        ariaMultiSelectable: 'aria-multiselectable',\n        ariaOrientation: 'aria-orientation',\n        ariaPlaceholder: 'aria-placeholder',\n        ariaPosInSet: 'aria-posinset',\n        ariaPressed: 'aria-pressed',\n        ariaReadOnly: 'aria-readonly',\n        ariaRelevant: 'aria-relevant',\n        ariaRequired: 'aria-required',\n        ariaRoleDescription: 'aria-roledescription',\n        ariaRowCount: 'aria-rowcount',\n        ariaRowIndex: 'aria-rowindex',\n        ariaRowSpan: 'aria-rowspan',\n        ariaSelected: 'aria-selected',\n        ariaSetSize: 'aria-setsize',\n        ariaSort: 'aria-sort',\n        ariaValueMax: 'aria-valuemax',\n        ariaValueMin: 'aria-valuemin',\n        ariaValueNow: 'aria-valuenow',\n        ariaValueText: 'aria-valuetext',\n        role: 'role'\n    };\n    const initAom = (ref, internals) => {\n        for (let key in aom) {\n            internals[key] = null;\n            let closureValue = null;\n            const attributeName = aom[key];\n            Object.defineProperty(internals, key, {\n                get() {\n                    return closureValue;\n                },\n                set(value) {\n                    closureValue = value;\n                    if (ref.isConnected) {\n                        ref.setAttribute(attributeName, value);\n                    }\n                    else {\n                        upgradeMap.set(ref, internals);\n                    }\n                }\n            });\n        }\n    };\n\n    class ValidityState {\n        constructor() {\n            this.badInput = false;\n            this.customError = false;\n            this.patternMismatch = false;\n            this.rangeOverflow = false;\n            this.rangeUnderflow = false;\n            this.stepMismatch = false;\n            this.tooLong = false;\n            this.tooShort = false;\n            this.typeMismatch = false;\n            this.valid = true;\n            this.valueMissing = false;\n            Object.seal(this);\n        }\n    }\n    const setValid = (validityObject) => {\n        validityObject.badInput = false;\n        validityObject.customError = false;\n        validityObject.patternMismatch = false;\n        validityObject.rangeOverflow = false;\n        validityObject.rangeUnderflow = false;\n        validityObject.stepMismatch = false;\n        validityObject.tooLong = false;\n        validityObject.tooShort = false;\n        validityObject.typeMismatch = false;\n        validityObject.valid = true;\n        validityObject.valueMissing = false;\n        return validityObject;\n    };\n    const reconcileValidity = (validityObject, newState, form) => {\n        validityObject.valid = isValid(newState);\n        Object.keys(newState).forEach(key => validityObject[key] = newState[key]);\n        if (form) {\n            setFormValidity(form);\n        }\n        return validityObject;\n    };\n    const isValid = (validityState) => {\n        let valid = true;\n        for (let key in validityState) {\n            if (key !== 'valid' && validityState[key] !== false) {\n                valid = false;\n            }\n        }\n        return valid;\n    };\n\n    function observerCallback(mutationList) {\n        mutationList.forEach(mutationRecord => {\n            const { addedNodes, removedNodes } = mutationRecord;\n            const added = Array.from(addedNodes);\n            const removed = Array.from(removedNodes);\n            added.forEach(node => {\n                if (internalsMap.has(node) && node.constructor['formAssociated']) {\n                    const internals = internalsMap.get(node);\n                    const { form } = internals;\n                    initForm(node, form, internals);\n                    initLabels(node, internals.labels);\n                }\n                if (upgradeMap.has(node)) {\n                    const internals = upgradeMap.get(node);\n                    const aomKeys = Object.keys(aom);\n                    aomKeys\n                        .filter(key => internals[key] !== null)\n                        .forEach(key => {\n                        node.setAttribute(aom[key], internals[key]);\n                    });\n                    upgradeMap.delete(node);\n                }\n            });\n            removed.forEach(node => {\n                const internals = internalsMap.get(node);\n                if (internals && hiddenInputMap.get(internals)) {\n                    removeHiddenInputs(internals);\n                }\n                if (shadowHostsMap.has(node)) {\n                    const observer = shadowHostsMap.get(node);\n                    observer.disconnect();\n                }\n            });\n        });\n    }\n    function fragmentObserverCallback(mutationList) {\n        mutationList.forEach(mutation => {\n            const { removedNodes } = mutation;\n            removedNodes.forEach(node => {\n                const observer = documentFragmentMap.get(mutation.target);\n                if (internalsMap.has(node)) {\n                    upgradeInternals(node);\n                }\n                observer.disconnect();\n            });\n        });\n    }\n    const deferUpgrade = (fragment) => {\n        const observer = new MutationObserver(fragmentObserverCallback);\n        observer.observe(fragment, { childList: true });\n        documentFragmentMap.set(fragment, observer);\n    };\n    new MutationObserver(observerCallback);\n    const observerConfig = {\n        childList: true,\n        subtree: true\n    };\n\n    const customStateMap = new WeakMap();\n    class CustomStateSet extends Set {\n        static get isPolyfilled() {\n            return true;\n        }\n        constructor(ref) {\n            super();\n            if (!ref || !ref.tagName || ref.tagName.indexOf('-') === -1) {\n                throw new TypeError('Illegal constructor');\n            }\n            customStateMap.set(this, ref);\n        }\n        add(state) {\n            if (!/^--/.test(state) || typeof state !== 'string') {\n                throw new DOMException(`Failed to execute 'add' on 'CustomStateSet': The specified value ${state} must start with '--'.`);\n            }\n            const result = super.add(state);\n            const ref = customStateMap.get(this);\n            ref.toggleAttribute(`state${state}`, true);\n            if (ref.part) {\n                ref.part.add(`state${state}`);\n            }\n            return result;\n        }\n        clear() {\n            for (let [entry] of this.entries()) {\n                this.delete(entry);\n            }\n            super.clear();\n        }\n        delete(state) {\n            const result = super.delete(state);\n            const ref = customStateMap.get(this);\n            ref.toggleAttribute(`state${state}`, false);\n            if (ref.part) {\n                ref.part.remove(`state${state}`);\n            }\n            return result;\n        }\n    }\n\n    class ElementInternals {\n        constructor(ref) {\n            if (!ref || !ref.tagName || ref.tagName.indexOf('-') === -1) {\n                throw new TypeError('Illegal constructor');\n            }\n            const rootNode = ref.getRootNode();\n            const validity = new ValidityState();\n            this.states = new CustomStateSet(ref);\n            refMap.set(this, ref);\n            validityMap.set(this, validity);\n            internalsMap.set(ref, this);\n            initAom(ref, this);\n            initRef(ref, this);\n            Object.seal(this);\n            upgradeInternals(ref);\n            if (rootNode instanceof DocumentFragment) {\n                deferUpgrade(rootNode);\n            }\n        }\n        static get isPolyfilled() {\n            return true;\n        }\n        checkValidity() {\n            const ref = refMap.get(this);\n            throwIfNotFormAssociated(ref, `Failed to execute 'checkValidity' on 'ElementInternals': The target element is not a form-associated custom element.`);\n            if (!this.willValidate) {\n                return true;\n            }\n            const validity = validityMap.get(this);\n            if (!validity.valid) {\n                const validityEvent = new Event('invalid', {\n                    bubbles: false,\n                    cancelable: true,\n                    composed: false\n                });\n                ref.dispatchEvent(validityEvent);\n            }\n            return validity.valid;\n        }\n        get form() {\n            const ref = refMap.get(this);\n            throwIfNotFormAssociated(ref, `Failed to read the 'form' property from 'ElementInternals': The target element is not a form-associated custom element.`);\n            let form;\n            if (ref.constructor['formAssociated'] === true) {\n                form = findParentForm(ref);\n            }\n            return form;\n        }\n        get labels() {\n            const ref = refMap.get(this);\n            throwIfNotFormAssociated(ref, `Failed to read the 'labels' property from 'ElementInternals': The target element is not a form-associated custom element.`);\n            const id = ref.getAttribute('id');\n            const hostRoot = ref.getRootNode();\n            if (hostRoot && id) {\n                return hostRoot.querySelectorAll(`[for=${id}]`);\n            }\n            return [];\n        }\n        reportValidity() {\n            const ref = refMap.get(this);\n            throwIfNotFormAssociated(ref, `Failed to execute 'reportValidity' on 'ElementInternals': The target element is not a form-associated custom element.`);\n            if (!this.willValidate) {\n                return true;\n            }\n            const valid = this.checkValidity();\n            const anchor = validationAnchorMap.get(this);\n            if (anchor && !ref.constructor['formAssociated']) {\n                throw new DOMException(`Failed to execute 'reportValidity' on 'ElementInternals': The target element is not a form-associated custom element.`);\n            }\n            if (!valid && anchor) {\n                ref.focus();\n                anchor.focus();\n            }\n            return valid;\n        }\n        setFormValue(value) {\n            const ref = refMap.get(this);\n            throwIfNotFormAssociated(ref, `Failed to execute 'setFormValue' on 'ElementInternals': The target element is not a form-associated custom element.`);\n            removeHiddenInputs(this);\n            if (value != null && !(value instanceof FormData)) {\n                if (ref.getAttribute('name')) {\n                    const hiddenInput = createHiddenInput(ref, this);\n                    hiddenInput.value = value;\n                }\n            }\n            else if (value != null && value instanceof FormData) {\n                value.forEach((formDataValue, formDataKey) => {\n                    if (typeof formDataValue === 'string') {\n                        const hiddenInput = createHiddenInput(ref, this);\n                        hiddenInput.name = formDataKey;\n                        hiddenInput.value = formDataValue;\n                    }\n                });\n            }\n            refValueMap.set(ref, value);\n        }\n        setValidity(validityChanges, validationMessage, anchor) {\n            const ref = refMap.get(this);\n            throwIfNotFormAssociated(ref, `Failed to execute 'setValidity' on 'ElementInternals': The target element is not a form-associated custom element.`);\n            if (!validityChanges) {\n                throw new TypeError('Failed to execute \\'setValidity\\' on \\'ElementInternals\\': 1 argument required, but only 0 present.');\n            }\n            validationAnchorMap.set(this, anchor);\n            const validity = validityMap.get(this);\n            const validityChangesObj = {};\n            for (const key in validityChanges) {\n                validityChangesObj[key] = validityChanges[key];\n            }\n            if (Object.keys(validityChangesObj).length === 0) {\n                setValid(validity);\n            }\n            const check = { ...validity, ...validityChangesObj };\n            delete check.valid;\n            const { valid } = reconcileValidity(validity, check, this.form);\n            if (!valid && !validationMessage) {\n                throw new DOMException(`Failed to execute 'setValidity' on 'ElementInternals': The second argument should not be empty if one or more flags in the first argument are true.`);\n            }\n            validationMessageMap.set(this, valid ? '' : validationMessage);\n            ref.toggleAttribute('internals-invalid', !valid);\n            ref.toggleAttribute('internals-valid', valid);\n            ref.setAttribute('aria-invalid', `${!valid}`);\n        }\n        get shadowRoot() {\n            const ref = refMap.get(this);\n            const shadowRoot = shadowRootMap.get(ref);\n            if (shadowRoot) {\n                return shadowRoot;\n            }\n            return null;\n        }\n        get validationMessage() {\n            const ref = refMap.get(this);\n            throwIfNotFormAssociated(ref, `Failed to read the 'validationMessage' property from 'ElementInternals': The target element is not a form-associated custom element.`);\n            return validationMessageMap.get(this);\n        }\n        get validity() {\n            const ref = refMap.get(this);\n            throwIfNotFormAssociated(ref, `Failed to read the 'validity' property from 'ElementInternals': The target element is not a form-associated custom element.`);\n            const validity = validityMap.get(this);\n            return validity;\n        }\n        get willValidate() {\n            const ref = refMap.get(this);\n            throwIfNotFormAssociated(ref, `Failed to read the 'willValidate' property from 'ElementInternals': The target element is not a form-associated custom element.`);\n            if ((ref.disabled || ref.hasAttribute('disabled')) ||\n                ref.hasAttribute('readonly')) {\n                return false;\n            }\n            return true;\n        }\n    }\n    function isElementInternalsSupported() {\n        if (!window.ElementInternals) {\n            return false;\n        }\n        class ElementInternalsFeatureDetection extends HTMLElement {\n            constructor() {\n                super();\n                this.internals = this.attachInternals();\n            }\n        }\n        const randomName = `element-internals-feature-detection-${Math.random().toString(36).replace(/[^a-z]+/g, '')}`;\n        customElements.define(randomName, ElementInternalsFeatureDetection);\n        const featureDetectionElement = new ElementInternalsFeatureDetection();\n        return [\n            'shadowRoot',\n            'form',\n            'willValidate',\n            'validity',\n            'validationMessage',\n            'labels',\n            'setFormValue',\n            'setValidity',\n            'checkValidity',\n            'reportValidity'\n        ].every(prop => prop in featureDetectionElement.internals);\n    }\n    if (!isElementInternalsSupported()) {\n        window.ElementInternals = ElementInternals;\n        function attachShadowObserver(...args) {\n            const shadowRoot = attachShadow.apply(this, args);\n            const observer = new MutationObserver(observerCallback);\n            shadowRootMap.set(this, shadowRoot);\n            if (window.ShadyDOM) {\n                observer.observe(this, observerConfig);\n            }\n            else {\n                observer.observe(shadowRoot, observerConfig);\n            }\n            shadowHostsMap.set(this, observer);\n            return shadowRoot;\n        }\n        function checkValidityOverride(...args) {\n            let returnValue = checkValidity.apply(this, args);\n            return overrideFormMethod(this, returnValue, 'checkValidity');\n        }\n        function reportValidityOverride(...args) {\n            let returnValue = reportValidity.apply(this, args);\n            return overrideFormMethod(this, returnValue, 'reportValidity');\n        }\n        HTMLElement.prototype.attachInternals = function () {\n            if (this.tagName.indexOf('-') === -1) {\n                throw new Error(`Failed to execute 'attachInternals' on 'HTMLElement': Unable to attach ElementInternals to non-custom elements.`);\n            }\n            if (internalsMap.has(this)) {\n                throw new DOMException(`DOMException: Failed to execute 'attachInternals' on 'HTMLElement': ElementInternals for the specified element was already attached.`);\n            }\n            return new ElementInternals(this);\n        };\n        const attachShadow = Element.prototype.attachShadow;\n        Element.prototype.attachShadow = attachShadowObserver;\n        const documentObserver = new MutationObserver(observerCallback);\n        documentObserver.observe(document.documentElement, observerConfig);\n        const checkValidity = HTMLFormElement.prototype.checkValidity;\n        HTMLFormElement.prototype.checkValidity = checkValidityOverride;\n        const reportValidity = HTMLFormElement.prototype.reportValidity;\n        HTMLFormElement.prototype.reportValidity = reportValidityOverride;\n        if (!window.CustomStateSet) {\n            window.CustomStateSet = CustomStateSet;\n        }\n    }\n    else if (!window.CustomStateSet) {\n        window.CustomStateSet = CustomStateSet;\n        const attachInternals = HTMLElement.prototype.attachInternals;\n        HTMLElement.prototype.attachInternals = function (...args) {\n            const internals = attachInternals.call(this, args);\n            internals.states = new CustomStateSet(this);\n            return internals;\n        };\n    }\n\n}());\n"]}