2019-11-08 08:11:23 +00:00
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{"version":3,"file":"scrollspy.js","sources":["../src/util/index.js","../src/scrollspy.js"],"sourcesContent":["/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.3.1): util/index.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst MAX_UID = 1000000\nconst MILLISECONDS_MULTIPLIER = 1000\nconst TRANSITION_END = 'transitionend'\n\n// Shoutout AngusCroll (https://goo.gl/pxwQGp)\nconst toType = obj => ({}.toString.call(obj).match(/\\s([a-z]+)/i)[1].toLowerCase())\n\n/**\n * --------------------------------------------------------------------------\n * Public Util Api\n * --------------------------------------------------------------------------\n */\n\nconst getUID = prefix => {\n do {\n prefix += ~~(Math.random() * MAX_UID) // \"~~\" acts like a faster Math.floor() here\n } while (document.getElementById(prefix))\n\n return prefix\n}\n\nconst getSelector = element => {\n let selector = element.getAttribute('data-target')\n\n if (!selector || selector === '#') {\n const hrefAttr = element.getAttribute('href')\n\n selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : null\n }\n\n return selector\n}\n\nconst getSelectorFromElement = element => {\n const selector = getSelector(element)\n\n if (selector) {\n return document.querySelector(selector) ? selector : null\n }\n\n return null\n}\n\nconst getElementFromSelector = element => {\n const selector = getSelector(element)\n\n return selector ? document.querySelector(selector) : null\n}\n\nconst getTransitionDurationFromElement = element => {\n if (!element) {\n return 0\n }\n\n // Get transition-duration of the element\n let {\n transitionDuration,\n transitionDelay\n } = window.getComputedStyle(element)\n\n const floatTransitionDuration = parseFloat(transitionDuration)\n const floatTransitionDelay = parseFloat(transitionDelay)\n\n // Return 0 if element or transition duration is not found\n if (!floatTransitionDuration && !floatTransitionDelay) {\n return 0\n }\n\n // If multiple durations are defined, take the first\n transitionDuration = transitionDuration.split(',')[0]\n transitionDelay = transitionDelay.split(',')[0]\n\n return (parseFloat(transitionDuration) + parseFloat(transitionDelay)) * MILLISECONDS_MULTIPLIER\n}\n\nconst triggerTransitionEnd = element => {\n const evt = document.createEvent('HTMLEvents')\n\n evt.initEvent(TRANSITION_END, true, true)\n element.dispatchEvent(evt)\n}\n\nconst isElement = obj => (obj[0] || obj).nodeType\n\nconst emulateTransitionEnd = (element, duration) => {\n let called = false\n const durationPadding = 5\n const emulatedDuration = duration + durationPadding\n function listener() {\n called = true\n element.removeEventListener(TRANSITION_END, listener)\n }\n\n element.addEventListener(TRANSITION_END, listener)\n setTimeout(() => {\n if (!called) {\n triggerTransitionEnd(element)\n }\n }, emulatedDuration)\n}\n\nconst typeCheckConfig = (componentName, config, configTypes) => {\n Object.keys(configTypes)\n .forEach(property => {\n const expectedTypes = configTypes[property]\n const value = config[property]\n const valueType = value && isElement(value) ?\n 'element' :\n toType(value)\n\n if (!new RegExp(expectedTypes).test(valueType)) {\n throw new Error(\n `${componentName.toUpperCase()}: ` +\n `Option \"${property}\" provided type \"${valueType}\" ` +\n `but expected type \"${expectedTypes}\".`)\n }\n })\n}\n\nconst makeArray = nodeList => {\n if (!nodeList) {\n return []\n }\n\n return [].slice.call(nodeList)\n}\n\nconst isVisible = element => {\n if (!element) {\n return false\n }\n\n if (element.style && element.parentNode && element.parentNode.style) {\n const elementStyle = getComputedStyle(element)\n const parentNodeStyle = getComputedStyle(element.parentNode)\n\n return element
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