summaryrefslogtreecommitdiff
path: root/node_modules/tailwindcss/lib/util/pseudoElements.js
diff options
context:
space:
mode:
authorPhilipp Tanlak <philipp.tanlak@gmail.com>2025-11-24 20:54:57 +0100
committerPhilipp Tanlak <philipp.tanlak@gmail.com>2025-11-24 20:57:48 +0100
commitb1e2c8fd5cb5dfa46bc440a12eafaf56cd844b1c (patch)
tree49d360fd6cbc6a2754efe93524ac47ff0fbe0f7d /node_modules/tailwindcss/lib/util/pseudoElements.js
Docs
Diffstat (limited to 'node_modules/tailwindcss/lib/util/pseudoElements.js')
-rw-r--r--node_modules/tailwindcss/lib/util/pseudoElements.js209
1 files changed, 209 insertions, 0 deletions
diff --git a/node_modules/tailwindcss/lib/util/pseudoElements.js b/node_modules/tailwindcss/lib/util/pseudoElements.js
new file mode 100644
index 0000000..0baf114
--- /dev/null
+++ b/node_modules/tailwindcss/lib/util/pseudoElements.js
@@ -0,0 +1,209 @@
+/** @typedef {import('postcss-selector-parser').Root} Root */ /** @typedef {import('postcss-selector-parser').Selector} Selector */ /** @typedef {import('postcss-selector-parser').Pseudo} Pseudo */ /** @typedef {import('postcss-selector-parser').Node} Node */ // There are some pseudo-elements that may or may not be:
+// **Actionable**
+// Zero or more user-action pseudo-classes may be attached to the pseudo-element itself
+// structural-pseudo-classes are NOT allowed but we don't make
+// The spec is not clear on whether this is allowed or not — but in practice it is.
+// **Terminal**
+// It MUST be placed at the end of a selector
+//
+// This is the required in the spec. However, some pseudo elements are not "terminal" because
+// they represent a "boundary piercing" that is compiled out by a build step.
+// **Jumpable**
+// Any terminal element may "jump" over combinators when moving to the end of the selector
+//
+// This is a backwards-compat quirk of pseudo element variants from earlier versions of Tailwind CSS.
+/** @typedef {'terminal' | 'actionable' | 'jumpable'} PseudoProperty */ /** @type {Record<string, PseudoProperty[]>} */ "use strict";
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+Object.defineProperty(exports, "movePseudos", {
+ enumerable: true,
+ get: function() {
+ return movePseudos;
+ }
+});
+let elementProperties = {
+ // Pseudo elements from the spec
+ "::after": [
+ "terminal",
+ "jumpable"
+ ],
+ "::backdrop": [
+ "terminal",
+ "jumpable"
+ ],
+ "::before": [
+ "terminal",
+ "jumpable"
+ ],
+ "::cue": [
+ "terminal"
+ ],
+ "::cue-region": [
+ "terminal"
+ ],
+ "::first-letter": [
+ "terminal",
+ "jumpable"
+ ],
+ "::first-line": [
+ "terminal",
+ "jumpable"
+ ],
+ "::grammar-error": [
+ "terminal"
+ ],
+ "::marker": [
+ "terminal",
+ "jumpable"
+ ],
+ "::part": [
+ "terminal",
+ "actionable"
+ ],
+ "::placeholder": [
+ "terminal",
+ "jumpable"
+ ],
+ "::selection": [
+ "terminal",
+ "jumpable"
+ ],
+ "::slotted": [
+ "terminal"
+ ],
+ "::spelling-error": [
+ "terminal"
+ ],
+ "::target-text": [
+ "terminal"
+ ],
+ // Pseudo elements from the spec with special rules
+ "::file-selector-button": [
+ "terminal",
+ "actionable"
+ ],
+ // Library-specific pseudo elements used by component libraries
+ // These are Shadow DOM-like
+ "::deep": [
+ "actionable"
+ ],
+ "::v-deep": [
+ "actionable"
+ ],
+ "::ng-deep": [
+ "actionable"
+ ],
+ // Note: As a rule, double colons (::) should be used instead of a single colon
+ // (:). This distinguishes pseudo-classes from pseudo-elements. However, since
+ // this distinction was not present in older versions of the W3C spec, most
+ // browsers support both syntaxes for the original pseudo-elements.
+ ":after": [
+ "terminal",
+ "jumpable"
+ ],
+ ":before": [
+ "terminal",
+ "jumpable"
+ ],
+ ":first-letter": [
+ "terminal",
+ "jumpable"
+ ],
+ ":first-line": [
+ "terminal",
+ "jumpable"
+ ],
+ // The default value is used when the pseudo-element is not recognized
+ // Because it's not recognized, we don't know if it's terminal or not
+ // So we assume it can be moved AND can have user-action pseudo classes attached to it
+ __default__: [
+ "terminal",
+ "actionable"
+ ]
+};
+function movePseudos(sel) {
+ let [pseudos] = movablePseudos(sel);
+ // Remove all pseudo elements from their respective selectors
+ pseudos.forEach(([sel, pseudo])=>sel.removeChild(pseudo));
+ // Re-add them to the end of the selector in the correct order.
+ // This moves terminal pseudo elements to the end of the
+ // selector otherwise the selector will not be valid.
+ //
+ // Examples:
+ // - `before:hover:text-center` would result in `.before\:hover\:text-center:hover::before`
+ // - `hover:before:text-center` would result in `.hover\:before\:text-center:hover::before`
+ //
+ // The selector `::before:hover` does not work but we
+ // can make it work for you by flipping the order.
+ sel.nodes.push(...pseudos.map(([, pseudo])=>pseudo));
+ return sel;
+}
+/** @typedef {[sel: Selector, pseudo: Pseudo, attachedTo: Pseudo | null]} MovablePseudo */ /** @typedef {[pseudos: MovablePseudo[], lastSeenElement: Pseudo | null]} MovablePseudosResult */ /**
+ * @param {Selector} sel
+ * @returns {MovablePseudosResult}
+ */ function movablePseudos(sel) {
+ /** @type {MovablePseudo[]} */ let buffer = [];
+ /** @type {Pseudo | null} */ let lastSeenElement = null;
+ for (let node of sel.nodes){
+ if (node.type === "combinator") {
+ buffer = buffer.filter(([, node])=>propertiesForPseudo(node).includes("jumpable"));
+ lastSeenElement = null;
+ } else if (node.type === "pseudo") {
+ if (isMovablePseudoElement(node)) {
+ lastSeenElement = node;
+ buffer.push([
+ sel,
+ node,
+ null
+ ]);
+ } else if (lastSeenElement && isAttachablePseudoClass(node, lastSeenElement)) {
+ buffer.push([
+ sel,
+ node,
+ lastSeenElement
+ ]);
+ } else {
+ lastSeenElement = null;
+ }
+ var _node_nodes;
+ for (let sub of (_node_nodes = node.nodes) !== null && _node_nodes !== void 0 ? _node_nodes : []){
+ let [movable, lastSeenElementInSub] = movablePseudos(sub);
+ lastSeenElement = lastSeenElementInSub || lastSeenElement;
+ buffer.push(...movable);
+ }
+ }
+ }
+ return [
+ buffer,
+ lastSeenElement
+ ];
+}
+/**
+ * @param {Node} node
+ * @returns {boolean}
+ */ function isPseudoElement(node) {
+ return node.value.startsWith("::") || elementProperties[node.value] !== undefined;
+}
+/**
+ * @param {Node} node
+ * @returns {boolean}
+ */ function isMovablePseudoElement(node) {
+ return isPseudoElement(node) && propertiesForPseudo(node).includes("terminal");
+}
+/**
+ * @param {Node} node
+ * @param {Pseudo} pseudo
+ * @returns {boolean}
+ */ function isAttachablePseudoClass(node, pseudo) {
+ if (node.type !== "pseudo") return false;
+ if (isPseudoElement(node)) return false;
+ return propertiesForPseudo(pseudo).includes("actionable");
+}
+/**
+ * @param {Pseudo} pseudo
+ * @returns {PseudoProperty[]}
+ */ function propertiesForPseudo(pseudo) {
+ var _elementProperties_pseudo_value;
+ return (_elementProperties_pseudo_value = elementProperties[pseudo.value]) !== null && _elementProperties_pseudo_value !== void 0 ? _elementProperties_pseudo_value : elementProperties.__default__;
+}