Merge pull request #108 from chinchang/release-2.5

Release 2.5

.eslintrc.json

@@ -256,6 +256,7 @@
         "Sass": true,
         "less": true,
         "stylus": true,
+        "atomizer": true,
         "marked": true,
         "jade": true,
         "loadJS": true,

src/dropdown.js

@@ -11,7 +11,7 @@
 		}
 	}
 	function init() {
-		var dropdowns = [].slice.call($all('[dropdown]'));
+		var dropdowns = $all('[dropdown]');
 		dropdowns.forEach(function (dropdown) {
 			dropdown.addEventListener('click', function (e) {
 				closeOpenDropdown(e.currentTarget);

src/index.html

@@ -17,6 +17,12 @@
 		<div class="main-container">
 			<div class="main-header">
 				<div class="main-header__btn-wrap  fr flex  flex-v-center">
+					<a id="runBtn" class="hide flex flex-v-center hint--rounded hint--bottom-left" aria-label="Run preview (Ctrl/⌘ + Shift + 5)" d-click="setPreviewContent">
+						<svg style="width: 14px; height: 14px;">
+						  <use xlink:href="#play-icon"></use>
+						</svg>Run
+					</a>
+
 					<a id="js-add-library-btn" class="fleex-v-center hint--rounded hint--bottom-left" aria-label="Add a JS/CSS library">
 						Add library <span id="js-external-lib-count" style="display:none;" class="count-label"></span>
 					</a>
@@ -66,6 +72,7 @@
 									<li><a data-type="css" data-mode="sass">SASS</a></li>
 									<li><a data-type="css" data-mode="less">LESS</a></li>
 									<li><a data-type="css" data-mode="stylus">Stylus</a></li>
+									<li><a data-type="css" data-mode="acss">Atomic CSS</a></li>
 								</ul>
 							</div>
 							<div class="code-wrap__header-right-options">
@@ -203,7 +210,7 @@
 
 		<div class="modal" id="helpModal">
 			<div class="modal__content">
-				<h1>Web Maker<small style="font-size:14px;"> v2.4.3</small></h1>
+				<h1>Web Maker<small style="font-size:14px;"> v2.5.0</small></h1>
 				<div>
 					<p>Made with <span style="margin-right: 8px;">💖</span> & <span style="margin-right: 8px;">🙌</span> by <a href="https://twitter.com/chinchang457" target="_blank">Kushagra Gour</a></p>
 					<p>Tweet out your feature requests, comments & suggestions to <a target="_blank" href="https://twitter.com/webmakerApp">@webmakerApp</a>.</p>
@@ -366,6 +373,12 @@
 							<input type="radio" name="keymap" value="vim" d-change="updateSetting" data-setting="keymap"> Vim
 						</label>
 					</div>
+					<label class="line">
+						<input type="checkbox" d-change="updateSetting" data-setting="refreshOnResize"> Refresh preview on resize
+					</label>
+					<label class="line">
+						<input type="checkbox" d-change="updateSetting" data-setting="autoPreview"> Auto-preview
+					</label>
 					<label class="line">
 						<input type="checkbox" d-change="updateSetting" data-setting="preserveLastCode"> Preserve last written code
 					</label>
@@ -387,14 +400,25 @@
 		<div class="modal" id="notificationsModal">
 			<div class="modal__content">
 				<h1>Whats new?</h1>
+				<div class="notification">
+				  <span class="notification__version">2.5.0</span>
+				  <ul>
+					<li><strong>Atomic CSS</strong>: Use can now use Atomic CSS(ACSS) in your work! <a href="https://acss.io/" target="_blank">Read more about it here</a>.</li>
+					<li><strong>Search your saved creations</strong>: Easily search through all your saved creations by title.</li>
+					<li><strong>Configurable Auto-preview</strong> - You can turn off the auto preview in settings if you don't want the preview to update as you type.</li>
+					<li><strong>Configurable refresh on resize</strong> - You can configure whether you want the preview to refresh when you resize the preview panel.</li>
+					<li><strong>Bugfix</strong> - Fix indentation <a href="https://github.com/chinchang/web-maker/issues/104" target="_blank">issue</a> with custom indentation size.</li>
+
+					<li><a href="https://github.com/chinchang/web-maker/issues" target="_blank">Suggest features or report bugs.</a></li>
+					<li>Thank you for being a part of this community of thousands of awesome developers. If you find Web Maker helpful, <a href="https://chrome.google.com/webstore/detail/web-maker/lkfkkhfhhdkiemehlpkgjeojomhpccnh/reviews" target="_blank" class="btn">Please rate Web Maker <span class="star"></span></a> & <a href="http://twitter.com/share?url=https://webmakerapp.com/&text=Web Maker - A blazing fast %26 offline web playground! via @webmakerApp&related=webmakerApp&hashtags=web,editor,chrome,extension" target="_blank" target="_blank" class="btn">share it</a>.</li>
+				  </ul>
+				</div>
+
 				<div class="notification">
 				  <span class="notification__version">2.4.2</span>
 				  <ul>
 					<li><strong>Improved infinite loop protection</strong>: Infinite loop protection is now faster and more reliable. And works without the need of Escodegen. Thanks to Ariya Hidayat!</li>
 					<li><strong>Bugfix</strong> - Default parameters not working in JavaScript is fixed.</li>
-
-					<li><a href="https://github.com/chinchang/web-maker/issues" target="_blank">Suggest features or report bugs.</a></li>
-					<li>Thank you for being a part of this community of thousands of awesome developers. If you find Web Maker helpful, <a href="https://chrome.google.com/webstore/detail/web-maker/lkfkkhfhhdkiemehlpkgjeojomhpccnh/reviews" target="_blank" class="btn">Please rate Web Maker <span class="star"></span></a> & <a href="http://twitter.com/share?url=https://webmakerapp.com/&text=Web Maker - A blazing fast %26 offline web playground! via @webmakerApp&related=webmakerApp&hashtags=web,editor,chrome,extension" target="_blank" target="_blank" class="btn">share it</a>.</li>
 				  </ul>
 				</div>
 
@@ -494,17 +518,18 @@
 		<div id="js-saved-items-pane" class="saved-items-pane">
 			<button class="btn  saved-items-pane__close-btn" id="js-saved-items-pane-close-btn">X</button>
 			<div class="flex flex-v-center" style="justify-content: space-between;">
+				<h3>My Library <span id="savedItemCountEl"></span></h3>
 
-			<h3>My Library <span id="savedItemCountEl"></span></h3>
+				<div class="main-header__btn-wrap">
-			<div class="main-header__btn-wrap">
+					<a d-click="exportItems" href="" class="btn btn-icon">Export
-				<a d-click="exportItems" href="" class="btn btn-icon">Export
+					</a>
-				</a>
+					<a d-click="onImportBtnClicked" href="" class="btn btn-icon">Import
-				<a d-click="onImportBtnClicked" href="" class="btn btn-icon">Import
+					</a>
-				</a>
+				</div>
-			</div>
 			</div>
+			<input type="" id="searchInput" class="search-input" d-input="onSearchInputChange" placeholder="Search your creations here...">
+
 			<div id="js-saved-items-wrap" class="saved-items-pane__container">
-
 			</div>
 		</div>
 
@@ -547,6 +572,11 @@
 			<symbol id="heart-icon" viewBox="0 0 24 24">
 				<path d="M12,21.35L10.55,20.03C5.4,15.36 2,12.27 2,8.5C2,5.41 4.42,3 7.5,3C9.24,3 10.91,3.81 12,5.08C13.09,3.81 14.76,3 16.5,3C19.58,3 22,5.41 22,8.5C22,12.27 18.6,15.36 13.45,20.03L12,21.35Z" />
 			</symbol>
+			<symbol id="play-icon" viewBox="0 0 24 24">
+				<svg>
+					<path d="M8,5.14V19.14L19,12.14L8,5.14Z" />
+				</svg>
+			</symbol>
 		</svg>
 
 		<script src="lib/codemirror/lib/codemirror.js"></script>

src/script.js

@@ -4,13 +4,15 @@ onboardModal, layoutBtn1, layoutBtn2, layoutBtn3, layoutBtn4, helpBtn, onboardMo
 addLibraryModal, addLibraryModal, notificationsBtn, notificationsModal, notificationsModal,
 notificationsModal, notificationsBtn, codepenBtn, saveHtmlBtn, saveBtn, settingsBtn,
 onboardModal, settingsModal, notificationsBtn, onboardShowInTabOptionBtn, editorThemeLinkTag,
-onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentationSizeValueEl */
+onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentationSizeValueEl,
+runBtn, searchInput
+*/
 /* eslint-disable no-extra-semi */
 ;(function (alertsService) {
 
 /* eslint-enable no-extra-semi */
 	var scope = scope || {};
-	var version = '2.4.2';
+	var version = '2.5.0';
 
 	if (window.DEBUG) {
 		window.scope = scope;
@@ -26,7 +28,8 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 		SCSS: 'scss',
 		SASS: 'sass',
 		LESS: 'less',
-		STYLUS: 'stylus'
+		STYLUS: 'stylus',
+		ACSS: 'acss'
 	};
 	var JsModes = {
 		JS: 'js',
@@ -47,6 +50,7 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 	modes[CssModes.SASS] = { label: 'SASS', cmMode: 'sass', codepenVal: 'sass' };
 	modes[CssModes.LESS] = { label: 'LESS', cmPath: 'css', cmMode: 'text/x-less', codepenVal: 'less' };
 	modes[CssModes.STYLUS] = { label: 'Stylus', cmMode: 'stylus', codepenVal: 'stylus' };
+	modes[CssModes.ACSS] = { label: 'Atomic CSS', cmPath: 'css', cmMode: 'css', codepenVal: 'notsupported', cmDisable: true };
 
 	var updateTimer
 		, updateDelay = 500
@@ -66,6 +70,7 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 		, prefs = {}
 		, codeInPreview = { html: null, css: null, js: null }
 		, isSavedItemsPaneOpen = false
+		, editorWithFocus
 
 		// DOM nodes
 		, frame = $('#demo-frame')
@@ -158,11 +163,13 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 			gutterSize: 6,
 			sizes: getMainSplitSizesToApply(),
 			onDragEnd: function () {
-				// Running preview updation in next call stack, so that error there
+				if (prefs.refreshOnResize) {
-				// doesn't affect this dragend listener.
+					// Running preview updation in next call stack, so that error there
-				setTimeout(function () {
+					// doesn't affect this dragend listener.
-					scope.setPreviewContent(true);
+					setTimeout(function () {
-				}, 1);
+						scope.setPreviewContent(true);
+					}, 1);
+				}
 			}
 		});
 	}
@@ -330,6 +337,15 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 			savedItemsPane.classList.toggle('is-open');
 		}
 		isSavedItemsPaneOpen = savedItemsPane.classList.contains('is-open');
+		if (isSavedItemsPaneOpen) {
+			searchInput.focus();
+		} else {
+			searchInput.value = '';
+			// Give last focused editor, focus again
+			if (editorWithFocus) {
+				editorWithFocus.focus();
+			}
+		}
 		document.body.classList[isSavedItemsPaneOpen ? 'add' : 'remove']('overlay-visible');
 	}
 
@@ -347,7 +363,7 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 				d.resolve([]);
 			}
 
-			savedItems = savedItems || [];
+			savedItems = savedItems || {};
 			trackEvent('fn', 'fetchItems', itemIds.length);
 			for (let i = 0; i < itemIds.length; i++) {
 
@@ -500,6 +516,8 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 			});
 		} else if (mode === CssModes.STYLUS) {
 			loadJS('lib/stylus.min.js').then(setLoadedFlag);
+		} else if (mode === CssModes.ACSS) {
+			loadJS('lib/atomizer.browser.js').then(setLoadedFlag);
 		} else if (mode === JsModes.COFFEESCRIPT) {
 			loadJS('lib/coffee-script.js').then(setLoadedFlag);
 		} else if (mode === JsModes.ES6) {
@@ -524,6 +542,7 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 		cssMode = value;
 		cssModelLabel.textContent = modes[value].label;
 		scope.cm.css.setOption('mode', modes[value].cmMode);
+		scope.cm.css.setOption('readOnly', modes[value].cmDisable);
 		CodeMirror.autoLoadMode(scope.cm.css, modes[value].cmPath || modes[value].cmMode);
 		return handleModeRequirements(value);
 	}
@@ -586,6 +605,13 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 				}
 				d.resolve(result);
 			});
+		} else if (cssMode === CssModes.ACSS) {
+			const html = scope.cm.html.getValue();
+			const foundClasses = atomizer.findClassNames(html);
+			const finalConfig = atomizer.getConfig(foundClasses, {});
+			const acss = atomizer.getCss(finalConfig);
+			scope.cm.css.setValue(acss);
+			d.resolve(acss)
 		}
 
 		return d.promise;
@@ -876,6 +902,9 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 				}
 			}
 		});
+		cm.on('focus', (editor) => {
+			editorWithFocus = editor;
+		});
 		cm.on('change', function onChange(editor, change) {
 			clearTimeout(updateTimer);
 
@@ -883,7 +912,11 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 				// This is done so that multiple simultaneous setValue don't trigger too many preview refreshes
 				// and in turn too many file writes on a single file (eg. preview.html).
 				if (change.origin !== 'setValue') {
-					scope.setPreviewContent();
+					// Specifically checking for false so that the condition doesn't get true even
+					// on absent key - possible when the setting key hasn't been fetched yet.
+					if (prefs.autoPreview !== false) {
+						scope.setPreviewContent();
+					}
 
 					saveBtn.classList.add('is-marked');
 					unsavedEditCount += 1;
@@ -1171,6 +1204,8 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 		$('[data-setting=editorTheme]').value = prefs.editorTheme;
 		$('[data-setting=keymap][value=' + (prefs.keymap || 'sublime') + ']').checked = true;
 		$('[data-setting=fontSize]').value = prefs.fontSize || 16;
+		$('[data-setting=refreshOnResize]').checked = prefs.refreshOnResize;
+		$('[data-setting=autoPreview]').checked = prefs.autoPreview;
 	}
 
 	/**
@@ -1191,6 +1226,9 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 			trackEvent('ui', 'updatePref-' + settingName, prefs[settingName]);
 		}
 
+		// Show/hide RUN button based on autoPreview setting.
+		runBtn.classList[prefs.autoPreview ? 'add' : 'remove']('hide');
+
 		htmlCode.querySelector('.CodeMirror').style.fontSize = prefs.fontSize;
 		cssCode.querySelector('.CodeMirror').style.fontSize = prefs.fontSize;
 		jsCode.querySelector('.CodeMirror').style.fontSize = prefs.fontSize;
@@ -1235,20 +1273,32 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 		trackEvent('ui', 'saveBtnClick', currentItem.id ? 'saved' : 'new');
 		saveItem();
 	};
+	scope.onSearchInputChange = function (e) {
+		const text = e.target.value;
+		let el;
+		for (const [itemId, item] of Object.entries(savedItems)) {
+			el = $(`#js-saved-items-pane [data-item-id=${itemId}]`);
+			if (item.title.toLowerCase().indexOf(text) === -1) {
+				el.classList.add('hide');
+			} else {
+				el.classList.remove('hide');
+			}
+		}
+	};
 
 	function compileNodes() {
-		var nodes = [].slice.call($all('[d-click]'));
+
-		nodes.forEach(function (el) {
+		function attachListenerForEvent(eventName) {
-			el.addEventListener('click', function (e) {
+			const nodes = $all(`[d-${eventName}]`);
-				scope[el.getAttribute('d-click')].call(window, e)
+			nodes.forEach(function (el) {
+				el.addEventListener(eventName, function (e) {
+					scope[el.getAttribute(`d-${eventName}`)].call(window, e)
+				});
 			});
-		});
+		}
-		nodes = [].slice.call($all('[d-change]'));
+		attachListenerForEvent('click');
-		nodes.forEach(function (el) {
+		attachListenerForEvent('change');
-			el.addEventListener('change', function (e) {
+		attachListenerForEvent('input');
-				scope[el.getAttribute('d-change')].call(window, e)
-			});
-		})
 	}
 
 	function init () {
@@ -1295,6 +1345,10 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 		});
 
 		codepenBtn.addEventListener('click', function (e) {
+			if (cssMode === CssModes.ACSS) {
+				alert('Oops! CodePen doesn\'t supports Atomic CSS currently.');
+				return;
+			}
 			var json = {
 				title: 'A Web Maker experiment',
 				html: scope.cm.html.getValue(),
@@ -1346,7 +1400,7 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 		});
 
 		// Attach listeners on mode change menu items
-		var modeItems = [].slice.call($all('.js-modes-menu a'));
+		var modeItems = $all('.js-modes-menu a');
 		modeItems.forEach(function (item) {
 			item.addEventListener('click', function (e) {
 				var mode = e.currentTarget.dataset.mode;
@@ -1366,7 +1420,7 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 		});
 
 		// Collapse btn event listeners
-		var collapseBtns = [].slice.call($all('.js-code-collapse-btn'));
+		var collapseBtns = $all('.js-code-collapse-btn');
 		collapseBtns.forEach(function (btn) {
 			btn.addEventListener('click', function (e) {
 				var codeWrapParent = e.currentTarget.parentElement.parentElement.parentElement;
@@ -1392,6 +1446,12 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 				saveItem();
 				trackEvent('ui', 'saveItemKeyboardShortcut');
 			}
+			// Ctrl/⌘ + Shift + 5
+			if (!prefs.autoPreview && (event.ctrlKey || event.metaKey) && event.shiftKey && (event.keyCode === 53)) {
+				event.preventDefault();
+				scope.setPreviewContent();
+				trackEvent('ui', 'previewKeyboardShortcut');
+			}
 			// Ctrl/⌘ + O
 			else if ((event.ctrlKey || event.metaKey) && (event.keyCode === 79)) {
 				event.preventDefault();
@@ -1402,25 +1462,33 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 				closeAllOverlays();
 			}
 			if (event.keyCode === 40 && isSavedItemsPaneOpen) {
+				// Return if no items present.
+				if (!$all('.js-saved-item-tile').length) {
+					return;
+				}
 				selectedItemElement = $('.js-saved-item-tile.selected');
 				if (selectedItemElement) {
 					selectedItemElement.classList.remove('selected');
-					selectedItemElement.nextElementSibling.classList.add('selected');
+					selectedItemElement.nextUntil('.js-saved-item-tile:not(.hide)').classList.add('selected');
 				} else {
-					$('.js-saved-item-tile:first-child').classList.add('selected');
+					$('.js-saved-item-tile:not(.hide)').classList.add('selected');
 				}
 				$('.js-saved-item-tile.selected').scrollIntoView(false);
 			} else if (event.keyCode === 38 && isSavedItemsPaneOpen) {
+				if (!$all('.js-saved-item-tile').length) {
+					return;
+				}
 				selectedItemElement = $('.js-saved-item-tile.selected');
 				if (selectedItemElement) {
 					selectedItemElement.classList.remove('selected');
-					selectedItemElement.previousElementSibling.classList.add('selected');
+					selectedItemElement.previousUntil('.js-saved-item-tile:not(.hide)').classList.add('selected');
 				} else {
-					$('.js-saved-item-tile:first-child').classList.add('selected');
+					$('.js-saved-item-tile:not(.hide)').classList.add('selected');
 				}
 				$('.js-saved-item-tile.selected').scrollIntoView(false);
 			} else if (event.keyCode === 13 && isSavedItemsPaneOpen) {
 				selectedItemElement = $('.js-saved-item-tile.selected');
+				if (!selectedItemElement) { return; }
 				setTimeout(function () {
 					openItem(selectedItemElement.dataset.itemId);
 				}, 350);
@@ -1491,7 +1559,9 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 			indentSize: 2,
 			editorTheme: 'monokai',
 			keymap: 'sublime',
-			fontSize: 16
+			fontSize: 16,
+			refreshOnResize: false,
+			autoPreview: true
 		}, function syncGetCallback(result) {
 			if (result.preserveLastCode && lastCode) {
 				unsavedEditCount = 0;
@@ -1520,6 +1590,8 @@ onboardDontShowInTabOptionBtn, TextareaAutoComplete, savedItemCountEl, indentati
 			prefs.editorTheme = result.editorTheme;
 			prefs.keymap = result.keymap;
 			prefs.fontSize = result.fontSize;
+			prefs.refreshOnResize = result.refreshOnResize;
+			prefs.autoPreview = result.autoPreview;
 
 			updateSettingsInUi();
 			scope.updateSetting();

src/style.css

@@ -25,6 +25,7 @@ h1 {
 a { text-decoration: none; color: crimson; cursor: pointer; }
 /*a:hover { text-decoration: underline; }*/
 
+.hide { display: none!important; }
 .flex { display: flex; }
 .flex-grow { flex-grow: 1; }
 .flex-v-center { align-items: center; }
@@ -372,7 +373,16 @@ li.CodeMirror-hint-active {
 	background: none;
 	border: 0;
 	color: rgba(255,255,255,0.6);
-	width: calc(100vw - 400px);
+	width: calc(100vw - 420px);
+}
+.search-input {
+	background: rgba(255, 255, 255, 0.1);
+	padding: 10px 20px;
+	border: 0;
+	width: 100%;
+	font-size: 16px;
+	color: white;
+	border-radius: 4px;
 }
 .modal {
 	position: fixed;
@@ -647,7 +657,7 @@ li.CodeMirror-hint-active {
 }
 .dropdown__menu > li > a {
 	display: block;
-	padding: 10px 15px;
+	padding: 6px 15px;
 	color: #333;
 	cursor: pointer;
 }

src/utils.js

@@ -2,9 +2,33 @@
 	window.DEBUG = document.cookie.indexOf('wmdebug') > -1;
 
 	window.$ = document.querySelector.bind(document);
-	window.$all = document.querySelectorAll.bind(document);
+	window.$all = (selector) => [...document.querySelectorAll(selector)];
 	var alphaNum = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
 
+	/**
+	 * The following 2 functions are supposed to find the next/previous sibling until the
+	 * passed `selector` is matched. But for now it actually finds the next/previous
+	 * element of `this` element in the list of `selector` matched element inside `this`'s
+	 * parent.
+	 * @param  Selector that should match for next siblings
+	 * @return element Next element that mathes `selector`
+	 */
+	Node.prototype.nextUntil = function (selector) {
+		const siblings = [...this.parentNode.querySelectorAll(selector)];
+		const index = siblings.indexOf(this);
+		return siblings[index + 1];
+	};
+
+	/*
+	 * @param  Selector that should match for next siblings
+	 * @return element Next element that mathes `selector`
+	 */
+	Node.prototype.previousUntil = function (selector) {
+		const siblings = [...this.parentNode.querySelectorAll(selector)];
+		const index = siblings.indexOf(this);
+		return siblings[index - 1];
+	};
+
 	// https://github.com/substack/semver-compare/blob/master/index.js
 	function semverCompare(a, b) {
 		var pa = a.split('.');