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_objectSpread2, _watch;\n\nfunction ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }\n\nfunction _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nimport { Vue } from '../../vue';\nimport { NAME_TAB } from '../../constants/components';\nimport { MODEL_EVENT_NAME_PREFIX } from '../../constants/events';\nimport { PROP_TYPE_ARRAY_OBJECT_STRING, PROP_TYPE_BOOLEAN, PROP_TYPE_OBJECT, PROP_TYPE_STRING } from '../../constants/props';\nimport { SLOT_NAME_TITLE } from '../../constants/slots';\nimport { sortKeys } from '../../utils/object';\nimport { makeProp, makePropsConfigurable } from '../../utils/props';\nimport { idMixin, props as idProps } from '../../mixins/id';\nimport { normalizeSlotMixin } from '../../mixins/normalize-slot';\nimport { BVTransition } from '../transition/bv-transition'; // --- Constants ---\n\nvar MODEL_PROP_NAME_ACTIVE = 'active';\nvar MODEL_EVENT_NAME_ACTIVE = MODEL_EVENT_NAME_PREFIX + MODEL_PROP_NAME_ACTIVE; // --- Props ---\n\nexport var props = makePropsConfigurable(sortKeys(_objectSpread(_objectSpread({}, idProps), {}, (_objectSpread2 = {}, _defineProperty(_objectSpread2, MODEL_PROP_NAME_ACTIVE, makeProp(PROP_TYPE_BOOLEAN, false)), _defineProperty(_objectSpread2, \"buttonId\", makeProp(PROP_TYPE_STRING)), _defineProperty(_objectSpread2, \"disabled\", makeProp(PROP_TYPE_BOOLEAN, false)), _defineProperty(_objectSpread2, \"lazy\", makeProp(PROP_TYPE_BOOLEAN, false)), _defineProperty(_objectSpread2, \"noBody\", makeProp(PROP_TYPE_BOOLEAN, false)), _defineProperty(_objectSpread2, \"tag\", makeProp(PROP_TYPE_STRING, 'div')), _defineProperty(_objectSpread2, \"title\", makeProp(PROP_TYPE_STRING)), _defineProperty(_objectSpread2, \"titleItemClass\", makeProp(PROP_TYPE_ARRAY_OBJECT_STRING)), _defineProperty(_objectSpread2, \"titleLinkAttributes\", makeProp(PROP_TYPE_OBJECT)), _defineProperty(_objectSpread2, \"titleLinkClass\", makeProp(PROP_TYPE_ARRAY_OBJECT_STRING)), _objectSpread2))), NAME_TAB); // --- Main component ---\n// @vue/component\n\nexport var BTab = /*#__PURE__*/Vue.extend({\n  name: NAME_TAB,\n  mixins: [idMixin, normalizeSlotMixin],\n  inject: {\n    bvTabs: {\n      default: function _default() {\n        return {};\n      }\n    }\n  },\n  props: props,\n  data: function data() {\n    return {\n      localActive: this[MODEL_PROP_NAME_ACTIVE] && !this.disabled\n    };\n  },\n  computed: {\n    // For parent sniffing of child\n    _isTab: function _isTab() {\n      return true;\n    },\n    tabClasses: function tabClasses() {\n      var active = this.localActive,\n          disabled = this.disabled;\n      return [{\n        active: active,\n        disabled: disabled,\n        'card-body': this.bvTabs.card && !this.noBody\n      }, // Apply <b-tabs> `activeTabClass` styles when this tab is active\n      active ? this.bvTabs.activeTabClass : null];\n    },\n    controlledBy: function controlledBy() {\n      return this.buttonId || this.safeId('__BV_tab_button__');\n    },\n    computedNoFade: function computedNoFade() {\n      return !(this.bvTabs.fade || false);\n    },\n    computedLazy: function computedLazy() {\n      return this.bvTabs.lazy || this.lazy;\n    }\n  },\n  watch: (_watch = {}, _defineProperty(_watch, MODEL_PROP_NAME_ACTIVE, function (newValue, oldValue) {\n    if (newValue !== oldValue) {\n      if (newValue) {\n        // If activated post mount\n        this.activate();\n      } else {\n        /* istanbul ignore next */\n        if (!this.deactivate()) {\n          // Tab couldn't be deactivated, so we reset the synced active prop\n          // Deactivation will fail if no other tabs to activate\n          this.$emit(MODEL_EVENT_NAME_ACTIVE, this.localActive);\n        }\n      }\n    }\n  }), _defineProperty(_watch, \"disabled\", function disabled(newValue, oldValue) {\n    if (newValue !== oldValue) {\n      var firstTab = this.bvTabs.firstTab;\n\n      if (newValue && this.localActive && firstTab) {\n        this.localActive = false;\n        firstTab();\n      }\n    }\n  }), _defineProperty(_watch, \"localActive\", function localActive(newValue) {\n    // Make `active` prop work with `.sync` modifier\n    this.$emit(MODEL_EVENT_NAME_ACTIVE, newValue);\n  }), _watch),\n  mounted: function mounted() {\n    // Inform `<b-tabs>` of our presence\n    this.registerTab();\n  },\n  updated: function updated() {\n    // Force the tab button content to update (since slots are not reactive)\n    // Only done if we have a title slot, as the title prop is reactive\n    var updateButton = this.bvTabs.updateButton;\n\n    if (updateButton && this.hasNormalizedSlot(SLOT_NAME_TITLE)) {\n      updateButton(this);\n    }\n  },\n  beforeDestroy: function beforeDestroy() {\n    // Inform `<b-tabs>` of our departure\n    this.unregisterTab();\n  },\n  methods: {\n    // Private methods\n    registerTab: function registerTab() {\n      // Inform `<b-tabs>` of our presence\n      var registerTab = this.bvTabs.registerTab;\n\n      if (registerTab) {\n        registerTab(this);\n      }\n    },\n    unregisterTab: function unregisterTab() {\n      // Inform `<b-tabs>` of our departure\n      var unregisterTab = this.bvTabs.unregisterTab;\n\n      if (unregisterTab) {\n        unregisterTab(this);\n      }\n    },\n    // Public methods\n    activate: function activate() {\n      // Not inside a `<b-tabs>` component or tab is disabled\n      var activateTab = this.bvTabs.activateTab;\n      return activateTab && !this.disabled ? activateTab(this) : false;\n    },\n    deactivate: function deactivate() {\n      // Not inside a `<b-tabs>` component or not active to begin with\n      var deactivateTab = this.bvTabs.deactivateTab;\n      return deactivateTab && this.localActive ? deactivateTab(this) : false;\n    }\n  },\n  render: function render(h) {\n    var localActive = this.localActive;\n    var $content = h(this.tag, {\n      staticClass: 'tab-pane',\n      class: this.tabClasses,\n      directives: [{\n        name: 'show',\n        value: localActive\n      }],\n      attrs: {\n        role: 'tabpanel',\n        id: this.safeId(),\n        'aria-hidden': localActive ? 'false' : 'true',\n        'aria-labelledby': this.controlledBy || null\n      },\n      ref: 'panel'\n    }, // Render content lazily if requested\n    [localActive || !this.computedLazy ? this.normalizeSlot() : h()]);\n    return h(BVTransition, {\n      props: {\n        mode: 'out-in',\n        noFade: this.computedNoFade\n      }\n    }, [$content]);\n  }\n});","import { BTabs } from './tabs';\nimport { BTab } from './tab';\nimport { pluginFactory } from '../../utils/plugins';\nvar TabsPlugin = /*#__PURE__*/pluginFactory({\n  components: {\n    BTabs: BTabs,\n    BTab: BTab\n  }\n});\nexport { TabsPlugin, BTabs, BTab };","var _watch;\n\nfunction ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }\n\nfunction _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nimport { COMPONENT_UID_KEY, Vue } from '../../vue';\nimport { NAME_TABS, NAME_TAB_BUTTON_HELPER } from '../../constants/components';\nimport { IS_BROWSER } from '../../constants/env';\nimport { EVENT_NAME_ACTIVATE_TAB, EVENT_NAME_CHANGED, EVENT_NAME_CLICK, EVENT_NAME_FIRST, EVENT_NAME_LAST, EVENT_NAME_NEXT, EVENT_NAME_PREV } from '../../constants/events';\nimport { CODE_DOWN, CODE_END, CODE_HOME, CODE_LEFT, CODE_RIGHT, CODE_SPACE, CODE_UP } from '../../constants/key-codes';\nimport { PROP_TYPE_ARRAY_OBJECT_STRING, PROP_TYPE_BOOLEAN, PROP_TYPE_NUMBER, PROP_TYPE_STRING } from '../../constants/props';\nimport { SLOT_NAME_EMPTY, SLOT_NAME_TABS_END, SLOT_NAME_TABS_START, SLOT_NAME_TITLE } from '../../constants/slots';\nimport { arrayIncludes } from '../../utils/array';\nimport { BvEvent } from '../../utils/bv-event.class';\nimport { attemptFocus, selectAll, requestAF } from '../../utils/dom';\nimport { stopEvent } from '../../utils/events';\nimport { identity } from '../../utils/identity';\nimport { isEvent } from '../../utils/inspect';\nimport { looseEqual } from '../../utils/loose-equal';\nimport { mathMax } from '../../utils/math';\nimport { makeModelMixin } from '../../utils/model';\nimport { toInteger } from '../../utils/number';\nimport { omit, sortKeys } from '../../utils/object';\nimport { observeDom } from '../../utils/observe-dom';\nimport { makeProp, makePropsConfigurable } from '../../utils/props';\nimport { stableSort } from '../../utils/stable-sort';\nimport { idMixin, props as idProps } from '../../mixins/id';\nimport { normalizeSlotMixin } from '../../mixins/normalize-slot';\nimport { BLink } from '../link/link';\nimport { BNav, props as BNavProps } from '../nav/nav'; // --- Constants ---\n\nvar _makeModelMixin = makeModelMixin('value', {\n  type: PROP_TYPE_NUMBER\n}),\n    modelMixin = _makeModelMixin.mixin,\n    modelProps = _makeModelMixin.props,\n    MODEL_PROP_NAME = _makeModelMixin.prop,\n    MODEL_EVENT_NAME = _makeModelMixin.event; // --- Helper methods ---\n// Filter function to filter out disabled tabs\n\n\nvar notDisabled = function notDisabled(tab) {\n  return !tab.disabled;\n}; // --- Helper components ---\n// @vue/component\n\n\nvar BVTabButton = /*#__PURE__*/Vue.extend({\n  name: NAME_TAB_BUTTON_HELPER,\n  inject: {\n    bvTabs: {\n      default:\n      /* istanbul ignore next */\n      function _default() {\n        return {};\n      }\n    }\n  },\n  props: {\n    controls: makeProp(PROP_TYPE_STRING),\n    id: makeProp(PROP_TYPE_STRING),\n    noKeyNav: makeProp(PROP_TYPE_BOOLEAN, false),\n    posInSet: makeProp(PROP_TYPE_NUMBER),\n    setSize: makeProp(PROP_TYPE_NUMBER),\n    // Reference to the child <b-tab> instance\n    tab: makeProp(),\n    tabIndex: makeProp(PROP_TYPE_NUMBER)\n  },\n  methods: {\n    focus: function focus() {\n      attemptFocus(this.$refs.link);\n    },\n    handleEvt: function handleEvt(event) {\n      /* istanbul ignore next */\n      if (this.tab.disabled) {\n        return;\n      }\n\n      var type = event.type,\n          keyCode = event.keyCode,\n          shiftKey = event.shiftKey;\n\n      if (type === 'click') {\n        stopEvent(event);\n        this.$emit(EVENT_NAME_CLICK, event);\n      } else if (type === 'keydown' && keyCode === CODE_SPACE) {\n        // For ARIA tabs the SPACE key will also trigger a click/select\n        // Even with keyboard navigation disabled, SPACE should \"click\" the button\n        // See: https://github.com/bootstrap-vue/bootstrap-vue/issues/4323\n        stopEvent(event);\n        this.$emit(EVENT_NAME_CLICK, event);\n      } else if (type === 'keydown' && !this.noKeyNav) {\n        // For keyboard navigation\n        if ([CODE_UP, CODE_LEFT, CODE_HOME].indexOf(keyCode) !== -1) {\n          stopEvent(event);\n\n          if (shiftKey || keyCode === CODE_HOME) {\n            this.$emit(EVENT_NAME_FIRST, event);\n          } else {\n            this.$emit(EVENT_NAME_PREV, event);\n          }\n        } else if ([CODE_DOWN, CODE_RIGHT, CODE_END].indexOf(keyCode) !== -1) {\n          stopEvent(event);\n\n          if (shiftKey || keyCode === CODE_END) {\n            this.$emit(EVENT_NAME_LAST, event);\n          } else {\n            this.$emit(EVENT_NAME_NEXT, event);\n          }\n        }\n      }\n    }\n  },\n  render: function render(h) {\n    var id = this.id,\n        tabIndex = this.tabIndex,\n        setSize = this.setSize,\n        posInSet = this.posInSet,\n        controls = this.controls,\n        handleEvt = this.handleEvt;\n    var _this$tab = this.tab,\n        title = _this$tab.title,\n        localActive = _this$tab.localActive,\n        disabled = _this$tab.disabled,\n        titleItemClass = _this$tab.titleItemClass,\n        titleLinkClass = _this$tab.titleLinkClass,\n        titleLinkAttributes = _this$tab.titleLinkAttributes;\n    var $link = h(BLink, {\n      staticClass: 'nav-link',\n      class: [{\n        active: localActive && !disabled,\n        disabled: disabled\n      }, titleLinkClass, // Apply <b-tabs> `activeNavItemClass` styles when the tab is active\n      localActive ? this.bvTabs.activeNavItemClass : null],\n      props: {\n        disabled: disabled\n      },\n      attrs: _objectSpread(_objectSpread({}, titleLinkAttributes), {}, {\n        id: id,\n        role: 'tab',\n        // Roving tab index when keynav enabled\n        tabindex: tabIndex,\n        'aria-selected': localActive && !disabled ? 'true' : 'false',\n        'aria-setsize': setSize,\n        'aria-posinset': posInSet,\n        'aria-controls': controls\n      }),\n      on: {\n        click: handleEvt,\n        keydown: handleEvt\n      },\n      ref: 'link'\n    }, [this.tab.normalizeSlot(SLOT_NAME_TITLE) || title]);\n    return h('li', {\n      staticClass: 'nav-item',\n      class: [titleItemClass],\n      attrs: {\n        role: 'presentation'\n      }\n    }, [$link]);\n  }\n}); // --- Props ---\n\nvar navProps = omit(BNavProps, ['tabs', 'isNavBar', 'cardHeader']);\nexport var props = makePropsConfigurable(sortKeys(_objectSpread(_objectSpread(_objectSpread(_objectSpread({}, idProps), modelProps), navProps), {}, {\n  // Only applied to the currently active `<b-nav-item>`\n  activeNavItemClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),\n  // Only applied to the currently active `<b-tab>`\n  // This prop is sniffed by the `<b-tab>` child\n  activeTabClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),\n  card: makeProp(PROP_TYPE_BOOLEAN, false),\n  contentClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),\n  // Synonym for 'bottom'\n  end: makeProp(PROP_TYPE_BOOLEAN, false),\n  // This prop is sniffed by the `<b-tab>` child\n  lazy: makeProp(PROP_TYPE_BOOLEAN, false),\n  navClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),\n  navWrapperClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),\n  noFade: makeProp(PROP_TYPE_BOOLEAN, false),\n  noKeyNav: makeProp(PROP_TYPE_BOOLEAN, false),\n  noNavStyle: makeProp(PROP_TYPE_BOOLEAN, false),\n  tag: makeProp(PROP_TYPE_STRING, 'div')\n})), NAME_TABS); // --- Main component ---\n// @vue/component\n\nexport var BTabs = /*#__PURE__*/Vue.extend({\n  name: NAME_TABS,\n  mixins: [idMixin, modelMixin, normalizeSlotMixin],\n  provide: function provide() {\n    return {\n      bvTabs: this\n    };\n  },\n  props: props,\n  data: function data() {\n    return {\n      // Index of current tab\n      currentTab: toInteger(this[MODEL_PROP_NAME], -1),\n      // Array of direct child `<b-tab>` instances, in DOM order\n      tabs: [],\n      // Array of child instances registered (for triggering reactive updates)\n      registeredTabs: []\n    };\n  },\n  computed: {\n    fade: function fade() {\n      // This computed prop is sniffed by the tab child\n      return !this.noFade;\n    },\n    localNavClass: function localNavClass() {\n      var classes = [];\n\n      if (this.card && this.vertical) {\n        classes.push('card-header', 'h-100', 'border-bottom-0', 'rounded-0');\n      }\n\n      return [].concat(classes, [this.navClass]);\n    }\n  },\n  watch: (_watch = {}, _defineProperty(_watch, MODEL_PROP_NAME, function (newValue, oldValue) {\n    if (newValue !== oldValue) {\n      newValue = toInteger(newValue, -1);\n      oldValue = toInteger(oldValue, 0);\n      var $tab = this.tabs[newValue];\n\n      if ($tab && !$tab.disabled) {\n        this.activateTab($tab);\n      } else {\n        // Try next or prev tabs\n        if (newValue < oldValue) {\n          this.previousTab();\n        } else {\n          this.nextTab();\n        }\n      }\n    }\n  }), _defineProperty(_watch, \"currentTab\", function currentTab(newValue) {\n    var index = -1; // Ensure only one tab is active at most\n\n    this.tabs.forEach(function ($tab, i) {\n      if (i === newValue && !$tab.disabled) {\n        $tab.localActive = true;\n        index = i;\n      } else {\n        $tab.localActive = false;\n      }\n    }); // Update the v-model\n\n    this.$emit(MODEL_EVENT_NAME, index);\n  }), _defineProperty(_watch, \"tabs\", function tabs(newValue, oldValue) {\n    var _this = this;\n\n    // We use `_uid` instead of `safeId()`, as the later is changed in a `$nextTick()`\n    // if no explicit ID is provided, causing duplicate emits\n    if (!looseEqual(newValue.map(function ($tab) {\n      return $tab[COMPONENT_UID_KEY];\n    }), oldValue.map(function ($tab) {\n      return $tab[COMPONENT_UID_KEY];\n    }))) {\n      // In a `$nextTick()` to ensure `currentTab` has been set first\n      this.$nextTick(function () {\n        // We emit shallow copies of the new and old arrays of tabs,\n        // to prevent users from potentially mutating the internal arrays\n        _this.$emit(EVENT_NAME_CHANGED, newValue.slice(), oldValue.slice());\n      });\n    }\n  }), _defineProperty(_watch, \"registeredTabs\", function registeredTabs() {\n    this.updateTabs();\n  }), _watch),\n  created: function created() {\n    // Create private non-reactive props\n    this.$_observer = null;\n  },\n  mounted: function mounted() {\n    this.setObserver(true);\n  },\n  beforeDestroy: function beforeDestroy() {\n    this.setObserver(false); // Ensure no references to child instances exist\n\n    this.tabs = [];\n  },\n  methods: {\n    registerTab: function registerTab($tab) {\n      if (!arrayIncludes(this.registeredTabs, $tab)) {\n        this.registeredTabs.push($tab);\n      }\n    },\n    unregisterTab: function unregisterTab($tab) {\n      this.registeredTabs = this.registeredTabs.slice().filter(function ($t) {\n        return $t !== $tab;\n      });\n    },\n    // DOM observer is needed to detect changes in order of tabs\n    setObserver: function setObserver() {\n      var _this2 = this;\n\n      var on = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;\n      this.$_observer && this.$_observer.disconnect();\n      this.$_observer = null;\n\n      if (on) {\n        /* istanbul ignore next: difficult to test mutation observer in JSDOM */\n        var handler = function handler() {\n          _this2.$nextTick(function () {\n            requestAF(function () {\n              _this2.updateTabs();\n            });\n          });\n        }; // Watch for changes to `<b-tab>` sub components\n\n\n        this.$_observer = observeDom(this.$refs.content, handler, {\n          childList: true,\n          subtree: false,\n          attributes: true,\n          attributeFilter: ['id']\n        });\n      }\n    },\n    getTabs: function getTabs() {\n      var $tabs = this.registeredTabs.filter(function ($tab) {\n        return $tab.$children.filter(function ($t) {\n          return $t._isTab;\n        }).length === 0;\n      }); // DOM Order of Tabs\n\n      var order = [];\n      /* istanbul ignore next: too difficult to test */\n\n      if (IS_BROWSER && $tabs.length > 0) {\n        // We rely on the DOM when mounted to get the \"true\" order of the `<b-tab>` children\n        // `querySelectorAll()` always returns elements in document order, regardless of\n        // order specified in the selector\n        var selector = $tabs.map(function ($tab) {\n          return \"#\".concat($tab.safeId());\n        }).join(', ');\n        order = selectAll(selector, this.$el).map(function ($el) {\n          return $el.id;\n        }).filter(identity);\n      } // Stable sort keeps the original order if not found in the `order` array,\n      // which will be an empty array before mount\n\n\n      return stableSort($tabs, function (a, b) {\n        return order.indexOf(a.safeId()) - order.indexOf(b.safeId());\n      });\n    },\n    updateTabs: function updateTabs() {\n      var $tabs = this.getTabs(); // Find last active non-disabled tab in current tabs\n      // We trust tab state over `currentTab`, in case tabs were added/removed/re-ordered\n\n      var tabIndex = $tabs.indexOf($tabs.slice().reverse().find(function ($tab) {\n        return $tab.localActive && !$tab.disabled;\n      })); // Else try setting to `currentTab`\n\n      if (tabIndex < 0) {\n        var currentTab = this.currentTab;\n\n        if (currentTab >= $tabs.length) {\n          // Handle last tab being removed, so find the last non-disabled tab\n          tabIndex = $tabs.indexOf($tabs.slice().reverse().find(notDisabled));\n        } else if ($tabs[currentTab] && !$tabs[currentTab].disabled) {\n          // Current tab is not disabled\n          tabIndex = currentTab;\n        }\n      } // Else find first non-disabled tab in current tabs\n\n\n      if (tabIndex < 0) {\n        tabIndex = $tabs.indexOf($tabs.find(notDisabled));\n      } // Ensure only one tab is active at a time\n\n\n      $tabs.forEach(function ($tab, index) {\n        $tab.localActive = index === tabIndex;\n      });\n      this.tabs = $tabs;\n      this.currentTab = tabIndex;\n    },\n    // Find a button that controls a tab, given the tab reference\n    // Returns the button vm instance\n    getButtonForTab: function getButtonForTab($tab) {\n      return (this.$refs.buttons || []).find(function ($btn) {\n        return $btn.tab === $tab;\n      });\n    },\n    // Force a button to re-render its content, given a `<b-tab>` instance\n    // Called by `<b-tab>` on `update()`\n    updateButton: function updateButton($tab) {\n      var $button = this.getButtonForTab($tab);\n\n      if ($button && $button.$forceUpdate) {\n        $button.$forceUpdate();\n      }\n    },\n    // Activate a tab given a `<b-tab>` instance\n    // Also accessed by `<b-tab>`\n    activateTab: function activateTab($tab) {\n      var currentTab = this.currentTab,\n          $tabs = this.tabs;\n      var result = false;\n\n      if ($tab) {\n        var index = $tabs.indexOf($tab);\n\n        if (index !== currentTab && index > -1 && !$tab.disabled) {\n          var tabEvent = new BvEvent(EVENT_NAME_ACTIVATE_TAB, {\n            cancelable: true,\n            vueTarget: this,\n            componentId: this.safeId()\n          });\n          this.$emit(tabEvent.type, index, currentTab, tabEvent);\n\n          if (!tabEvent.defaultPrevented) {\n            this.currentTab = index;\n            result = true;\n          }\n        }\n      } // Couldn't set tab, so ensure v-model is up to date\n\n      /* istanbul ignore next: should rarely happen */\n\n\n      if (!result && this[MODEL_PROP_NAME] !== currentTab) {\n        this.$emit(MODEL_EVENT_NAME, currentTab);\n      }\n\n      return result;\n    },\n    // Deactivate a tab given a `<b-tab>` instance\n    // Accessed by `<b-tab>`\n    deactivateTab: function deactivateTab($tab) {\n      if ($tab) {\n        // Find first non-disabled tab that isn't the one being deactivated\n        // If no tabs are available, then don't deactivate current tab\n        return this.activateTab(this.tabs.filter(function ($t) {\n          return $t !== $tab;\n        }).find(notDisabled));\n      }\n      /* istanbul ignore next: should never/rarely happen */\n\n\n      return false;\n    },\n    // Focus a tab button given its `<b-tab>` instance\n    focusButton: function focusButton($tab) {\n      var _this3 = this;\n\n      // Wrap in `$nextTick()` to ensure DOM has completed rendering\n      this.$nextTick(function () {\n        attemptFocus(_this3.getButtonForTab($tab));\n      });\n    },\n    // Emit a click event on a specified `<b-tab>` component instance\n    emitTabClick: function emitTabClick(tab, event) {\n      if (isEvent(event) && tab && tab.$emit && !tab.disabled) {\n        tab.$emit(EVENT_NAME_CLICK, event);\n      }\n    },\n    // Click handler\n    clickTab: function clickTab($tab, event) {\n      this.activateTab($tab);\n      this.emitTabClick($tab, event);\n    },\n    // Move to first non-disabled tab\n    firstTab: function firstTab(focus) {\n      var $tab = this.tabs.find(notDisabled);\n\n      if (this.activateTab($tab) && focus) {\n        this.focusButton($tab);\n        this.emitTabClick($tab, focus);\n      }\n    },\n    // Move to previous non-disabled tab\n    previousTab: function previousTab(focus) {\n      var currentIndex = mathMax(this.currentTab, 0);\n      var $tab = this.tabs.slice(0, currentIndex).reverse().find(notDisabled);\n\n      if (this.activateTab($tab) && focus) {\n        this.focusButton($tab);\n        this.emitTabClick($tab, focus);\n      }\n    },\n    // Move to next non-disabled tab\n    nextTab: function nextTab(focus) {\n      var currentIndex = mathMax(this.currentTab, -1);\n      var $tab = this.tabs.slice(currentIndex + 1).find(notDisabled);\n\n      if (this.activateTab($tab) && focus) {\n        this.focusButton($tab);\n        this.emitTabClick($tab, focus);\n      }\n    },\n    // Move to last non-disabled tab\n    lastTab: function lastTab(focus) {\n      var $tab = this.tabs.slice().reverse().find(notDisabled);\n\n      if (this.activateTab($tab) && focus) {\n        this.focusButton($tab);\n        this.emitTabClick($tab, focus);\n      }\n    }\n  },\n  render: function render(h) {\n    var _this4 = this;\n\n    var align = this.align,\n        card = this.card,\n        end = this.end,\n        fill = this.fill,\n        firstTab = this.firstTab,\n        justified = this.justified,\n        lastTab = this.lastTab,\n        nextTab = this.nextTab,\n        noKeyNav = this.noKeyNav,\n        noNavStyle = this.noNavStyle,\n        pills = this.pills,\n        previousTab = this.previousTab,\n        small = this.small,\n        $tabs = this.tabs,\n        vertical = this.vertical; // Currently active tab\n\n    var $activeTab = $tabs.find(function ($tab) {\n      return $tab.localActive && !$tab.disabled;\n    }); // Tab button to allow focusing when no active tab found (keynav only)\n\n    var $fallbackTab = $tabs.find(function ($tab) {\n      return !$tab.disabled;\n    }); // For each `<b-tab>` found create the tab buttons\n\n    var $buttons = $tabs.map(function ($tab, index) {\n      var _on;\n\n      var safeId = $tab.safeId; // Ensure at least one tab button is focusable when keynav enabled (if possible)\n\n      var tabIndex = null;\n\n      if (!noKeyNav) {\n        // Buttons are not in tab index unless active, or a fallback tab\n        tabIndex = -1;\n\n        if ($tab === $activeTab || !$activeTab && $tab === $fallbackTab) {\n          // Place tab button in tab sequence\n          tabIndex = null;\n        }\n      }\n\n      return h(BVTabButton, {\n        props: {\n          controls: safeId ? safeId() : null,\n          id: $tab.controlledBy || (safeId ? safeId(\"_BV_tab_button_\") : null),\n          noKeyNav: noKeyNav,\n          posInSet: index + 1,\n          setSize: $tabs.length,\n          tab: $tab,\n          tabIndex: tabIndex\n        },\n        on: (_on = {}, _defineProperty(_on, EVENT_NAME_CLICK, function (event) {\n          _this4.clickTab($tab, event);\n        }), _defineProperty(_on, EVENT_NAME_FIRST, firstTab), _defineProperty(_on, EVENT_NAME_PREV, previousTab), _defineProperty(_on, EVENT_NAME_NEXT, nextTab), _defineProperty(_on, EVENT_NAME_LAST, lastTab), _on),\n        key: $tab[COMPONENT_UID_KEY] || index,\n        ref: 'buttons',\n        // Needed to make `this.$refs.buttons` an array\n        refInFor: true\n      });\n    });\n    var $nav = h(BNav, {\n      class: this.localNavClass,\n      attrs: {\n        role: 'tablist',\n        id: this.safeId('_BV_tab_controls_')\n      },\n      props: {\n        fill: fill,\n        justified: justified,\n        align: align,\n        tabs: !noNavStyle && !pills,\n        pills: !noNavStyle && pills,\n        vertical: vertical,\n        small: small,\n        cardHeader: card && !vertical\n      },\n      ref: 'nav'\n    }, [this.normalizeSlot(SLOT_NAME_TABS_START) || h(), $buttons, this.normalizeSlot(SLOT_NAME_TABS_END) || h()]);\n    $nav = h('div', {\n      class: [{\n        'card-header': card && !vertical && !end,\n        'card-footer': card && !vertical && end,\n        'col-auto': vertical\n      }, this.navWrapperClass],\n      key: 'bv-tabs-nav'\n    }, [$nav]);\n    var $children = this.normalizeSlot() || [];\n    var $empty = h();\n\n    if ($children.length === 0) {\n      $empty = h('div', {\n        class: ['tab-pane', 'active', {\n          'card-body': card\n        }],\n        key: 'bv-empty-tab'\n      }, this.normalizeSlot(SLOT_NAME_EMPTY));\n    }\n\n    var $content = h('div', {\n      staticClass: 'tab-content',\n      class: [{\n        col: vertical\n      }, this.contentClass],\n      attrs: {\n        id: this.safeId('_BV_tab_container_')\n      },\n      key: 'bv-content',\n      ref: 'content'\n    }, [$children, $empty]); // Render final output\n\n    return h(this.tag, {\n      staticClass: 'tabs',\n      class: {\n        row: vertical,\n        'no-gutters': vertical && card\n      },\n      attrs: {\n        id: this.safeId()\n      }\n    }, [end ? $content : h(), $nav, end ? h() : $content]);\n  }\n});"],"sourceRoot":""}