| { | |
| "version": 3, | |
| "sources": ["index.ts"], | |
| "sourcesContent": ["/**\n * Left Navigation.\n */\nexport const initJumpLinks = async function () {\n const pagesWithJumpLinks = ['/about'];\n if (!pagesWithJumpLinks.includes(window.location.pathname)) {\n // stop the file from doing anything else if the page doesn't have jumplinks\n return;\n }\n\n // these might be generated or not so don't grab references to the elements until actually need them.\n const titles = 'h2, h3, h4';\n const nav = '.LeftNav a';\n // these are always in the dom so we can get them now and throw errors if they're not.\n const leftNav = document.querySelector('.LeftNav');\n const siteContent = document.querySelector('.go-Content');\n let isObserverDisabled = false;\n\n /**\n * El function\n * @example el('h1', {className: 'title'}, 'Welcome to the site');\n * @example el('ul', {className: 'list'}, el('li', {}, 'Item one'), el('li', {}, 'Item two'), el('li', {}, 'Item three'));\n * @example el('img', {src: '/url.svg'});\n */\n function el(\n type = '',\n props: { [key: string]: string } = {},\n ...children: (HTMLElement | HTMLElement[] | string | undefined)[]\n ) {\n // Error, no type declared.\n if (!type) {\n throw new Error('Provide `type` to create document element.');\n }\n\n // Create element with optional attribute props\n const docEl = Object.assign(document.createElement(type), props);\n\n // Children: array containing strings or elements\n children.forEach(child => {\n if (typeof child === 'string') {\n docEl.appendChild(document.createTextNode(child));\n } else if (Array.isArray(child)) {\n child.forEach(c => docEl.appendChild(c));\n } else if (child instanceof HTMLElement) {\n docEl.appendChild(child);\n }\n });\n\n return docEl;\n }\n /** Build Nav if data hydrate is present. */\n function buildNav() {\n return new Promise((resolve, reject) => {\n let navItems: { id: string; label: string; subnav?: { id: string; label: string }[] }[] = [];\n let elements: HTMLElement[] = [];\n\n if (!siteContent || !leftNav) {\n return reject('.SiteContent not found.');\n }\n if (leftNav instanceof HTMLElement && !leftNav?.dataset?.hydrate) {\n return resolve(true);\n }\n\n for (const title of siteContent.querySelectorAll(titles)) {\n if (title instanceof HTMLElement && !title?.dataset?.ignore) {\n switch (title.tagName) {\n case 'H2':\n navItems = [\n ...navItems,\n {\n id: title.id,\n label: title?.dataset?.title ? title.dataset.title : title.textContent ?? '',\n },\n ];\n break;\n\n case 'H3':\n case 'H4':\n if (!navItems[navItems.length - 1]?.subnav) {\n navItems[navItems.length - 1].subnav = [\n {\n id: title.id,\n label: title?.dataset?.title ? title.dataset.title : title.textContent ?? '',\n },\n ];\n } else if (navItems[navItems.length - 1].subnav) {\n navItems[navItems.length - 1].subnav?.push({\n id: title.id,\n label: title?.dataset?.title ? title.dataset.title : title.textContent ?? '',\n });\n }\n break;\n }\n }\n }\n\n for (const navItem of navItems) {\n const link = el('a', { href: '#' + navItem.id }, el('span', {}, navItem.label));\n elements = [...elements, link];\n if (navItem?.subnav) {\n let subLinks: HTMLElement[] = [];\n for (const subnavItem of navItem.subnav) {\n const subItem = el(\n 'li',\n {},\n el(\n 'a',\n { href: '#' + subnavItem.id },\n el('img', { src: '/static/frontend/about/dot.svg', width: '5', height: '5' }),\n el('span', {}, subnavItem.label)\n )\n );\n subLinks = [...subLinks, subItem];\n }\n const list = el('ul', { className: 'LeftSubnav' }, subLinks);\n elements = [...elements, list];\n }\n }\n\n elements.forEach(element => leftNav.appendChild(element));\n\n return resolve(true);\n });\n }\n /**\n * Set the correct active element.\n */\n function setNav() {\n return new Promise(resolve => {\n if (!document.querySelectorAll(nav)) return resolve(true);\n for (const a of document.querySelectorAll(nav)) {\n if (a instanceof HTMLAnchorElement && a.href === location.href) {\n setElementActive(a);\n break;\n }\n }\n resolve(true);\n });\n }\n /** resetNav: removes all .active from nav elements */\n function resetNav() {\n return new Promise(resolve => {\n if (!document.querySelectorAll(nav)) return resolve(true);\n for (const a of document.querySelectorAll(nav)) {\n a.classList.remove('active');\n }\n resolve(true);\n });\n }\n /** setElementActive: controls resetting nav and highlighting the appropriate nav items */\n function setElementActive(element: HTMLAnchorElement) {\n if (element instanceof HTMLAnchorElement) {\n resetNav().then(() => {\n element.classList.add('active');\n const parent = element?.parentNode?.parentNode;\n if (parent instanceof HTMLElement && parent?.classList?.contains('LeftSubnav')) {\n parent.previousElementSibling?.classList.add('active');\n }\n });\n }\n }\n /** setLinkManually: disables observer and selects the clicked nav item. */\n function setLinkManually() {\n delayObserver();\n const link = document.querySelector('[href=\"' + location.hash + '\"]');\n if (link instanceof HTMLAnchorElement) {\n setElementActive(link);\n }\n }\n /** delayObserver: Quick on off switch for intersection observer. */\n function delayObserver() {\n isObserverDisabled = true;\n setTimeout(() => {\n isObserverDisabled = false;\n }, 200);\n }\n /** observeSections: kicks off observation of titles as well as manual clicks with hashchange */\n function observeSections() {\n window.addEventListener('hashchange', setLinkManually);\n\n if (siteContent?.querySelectorAll(titles)) {\n const callback: IntersectionObserverCallback = entries => {\n if (!isObserverDisabled && Array.isArray(entries) && entries.length > 0) {\n for (const entry of entries) {\n if (entry.isIntersecting && entry.target instanceof HTMLElement) {\n const { id } = entry.target;\n const link = document.querySelector('[href=\"#' + id + '\"]');\n if (link instanceof HTMLAnchorElement) {\n setElementActive(link);\n }\n break;\n }\n }\n }\n };\n // rootMargin is important when multiple sections are in the observable area **on page load**.\n // they will still be highlighted on scroll because of the root margin.\n const ob = new IntersectionObserver(callback, {\n threshold: 0,\n rootMargin: '0px 0px -50% 0px',\n });\n for (const title of siteContent.querySelectorAll(titles)) {\n if (title instanceof HTMLElement && !title?.dataset?.ignore) {\n ob.observe(title);\n }\n }\n }\n }\n\n try {\n await buildNav();\n await setNav();\n if (location.hash) {\n delayObserver();\n }\n observeSections();\n } catch (e) {\n if (e instanceof Error) {\n console.error(e.message);\n } else {\n console.error(e);\n }\n }\n};\n"], | |
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