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Viewing file:     formatVariantSelector.js (8.38 KB)      -rw-r--r--

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
function _export(target, all) {
    for(var name in all)Object.defineProperty(target, name, {
        enumerable: true,
        get: all[name]
    });
}
_export(exports, {
    selectorFunctions: ()=>selectorFunctions,
    formatVariantSelector: ()=>formatVariantSelector,
    finalizeSelector: ()=>finalizeSelector
});
const _postcssSelectorParser = /*#__PURE__*/ _interopRequireDefault(require("postcss-selector-parser"));
const _unesc = /*#__PURE__*/ _interopRequireDefault(require("postcss-selector-parser/dist/util/unesc"));
const _escapeClassName = /*#__PURE__*/ _interopRequireDefault(require("../util/escapeClassName"));
const _prefixSelector = /*#__PURE__*/ _interopRequireDefault(require("../util/prefixSelector"));
function _interopRequireDefault(obj) {
    return obj && obj.__esModule ? obj : {
        default: obj
    };
}
var ref;
let MERGE = ":merge";
let PARENT = "&";
let selectorFunctions = new Set([
    MERGE
]);
function formatVariantSelector(current, ...others) {
    for (let other of others){
        let incomingValue = resolveFunctionArgument(other, MERGE);
        if (incomingValue !== null) {
            let existingValue = resolveFunctionArgument(current, MERGE, incomingValue);
            if (existingValue !== null) {
                let existingTarget = `${MERGE}(${incomingValue})`;
                let splitIdx = other.indexOf(existingTarget);
                let addition = other.slice(splitIdx + existingTarget.length).split(" ")[0];
                current = current.replace(existingTarget, existingTarget + addition);
                continue;
            }
        }
        current = other.replace(PARENT, current);
    }
    return current;
}
var ref1;
function finalizeSelector(format, { selector , candidate , context , isArbitraryVariant , // Split by the separator, but ignore the separator inside square brackets:
//
// E.g.: dark:lg:hover:[paint-order:markers]
//           ┬  ┬     ┬            ┬
//           │  │     │            ╰── We will not split here
//           ╰──┴─────┴─────────────── We will split here
//
base =candidate.split(new RegExp(`\\${(ref1 = context === null || context === void 0 ? void 0 : (ref = context.tailwindConfig) === null || ref === void 0 ? void 0 : ref.separator) !== null && ref1 !== void 0 ? ref1 : ":"}(?![^[]*\\])`)).pop() ,  }) {
    var ref2;
    let ast = (0, _postcssSelectorParser.default)().astSync(selector);
    // We explicitly DO NOT prefix classes in arbitrary variants
    if ((context === null || context === void 0 ? void 0 : (ref2 = context.tailwindConfig) === null || ref2 === void 0 ? void 0 : ref2.prefix) && !isArbitraryVariant) {
        format = (0, _prefixSelector.default)(context.tailwindConfig.prefix, format);
    }
    format = format.replace(PARENT, `.${(0, _escapeClassName.default)(candidate)}`);
    let formatAst = (0, _postcssSelectorParser.default)().astSync(format);
    // Remove extraneous selectors that do not include the base class/candidate being matched against
    // For example if we have a utility defined `.a, .b { color: red}`
    // And the formatted variant is sm:b then we want the final selector to be `.sm\:b` and not `.a, .sm\:b`
    ast.each((node)=>{
        let hasClassesMatchingCandidate = node.some((n)=>n.type === "class" && n.value === base);
        if (!hasClassesMatchingCandidate) {
            node.remove();
        }
    });
    // Normalize escaped classes, e.g.:
    //
    // The idea would be to replace the escaped `base` in the selector with the
    // `format`. However, in css you can escape the same selector in a few
    // different ways. This would result in different strings and therefore we
    // can't replace it properly.
    //
    //               base: bg-[rgb(255,0,0)]
    //   base in selector: bg-\\[rgb\\(255\\,0\\,0\\)\\]
    //       escaped base: bg-\\[rgb\\(255\\2c 0\\2c 0\\)\\]
    //
    ast.walkClasses((node)=>{
        if (node.raws && node.value.includes(base)) {
            node.raws.value = (0, _escapeClassName.default)((0, _unesc.default)(node.raws.value));
        }
    });
    // We can safely replace the escaped base now, since the `base` section is
    // now in a normalized escaped value.
    ast.walkClasses((node)=>{
        if (node.value === base) {
            node.replaceWith(...formatAst.nodes);
        }
    });
    // This will make sure to move pseudo's to the correct spot (the end for
    // pseudo elements) because otherwise the selector will never work
    // anyway.
    //
    // E.g.:
    //  - `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`
    //
    // `::before:hover` doesn't work, which means that we can make it work for you by flipping the order.
    function collectPseudoElements(selector) {
        let nodes = [];
        for (let node of selector.nodes){
            if (isPseudoElement(node)) {
                nodes.push(node);
                selector.removeChild(node);
            }
            if (node === null || node === void 0 ? void 0 : node.nodes) {
                nodes.push(...collectPseudoElements(node));
            }
        }
        return nodes;
    }
    // Remove unnecessary pseudo selectors that we used as placeholders
    ast.each((selector)=>{
        selector.walkPseudos((p)=>{
            if (selectorFunctions.has(p.value)) {
                p.replaceWith(p.nodes);
            }
        });
        let pseudoElements = collectPseudoElements(selector);
        if (pseudoElements.length > 0) {
            selector.nodes.push(pseudoElements.sort(sortSelector));
        }
    });
    return ast.toString();
}
// 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.
let pseudoElementsBC = [
    ":before",
    ":after",
    ":first-line",
    ":first-letter"
];
// These pseudo-elements _can_ be combined with other pseudo selectors AND the order does matter.
let pseudoElementExceptions = [
    "::file-selector-button"
];
// This will make sure to move pseudo's to the correct spot (the end for
// pseudo elements) because otherwise the selector will never work
// anyway.
//
// E.g.:
//  - `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`
//
// `::before:hover` doesn't work, which means that we can make it work
// for you by flipping the order.
function sortSelector(a, z) {
    // Both nodes are non-pseudo's so we can safely ignore them and keep
    // them in the same order.
    if (a.type !== "pseudo" && z.type !== "pseudo") {
        return 0;
    }
    // If one of them is a combinator, we need to keep it in the same order
    // because that means it will start a new "section" in the selector.
    if (a.type === "combinator" ^ z.type === "combinator") {
        return 0;
    }
    // One of the items is a pseudo and the other one isn't. Let's move
    // the pseudo to the right.
    if (a.type === "pseudo" ^ z.type === "pseudo") {
        return (a.type === "pseudo") - (z.type === "pseudo");
    }
    // Both are pseudo's, move the pseudo elements (except for
    // ::file-selector-button) to the right.
    return isPseudoElement(a) - isPseudoElement(z);
}
function isPseudoElement(node) {
    if (node.type !== "pseudo") return false;
    if (pseudoElementExceptions.includes(node.value)) return false;
    return node.value.startsWith("::") || pseudoElementsBC.includes(node.value);
}
function resolveFunctionArgument(haystack, needle, arg) {
    let startIdx = haystack.indexOf(arg ? `${needle}(${arg})` : needle);
    if (startIdx === -1) return null;
    // Start inside the `(`
    startIdx += needle.length + 1;
    let target = "";
    let count = 0;
    for (let char of haystack.slice(startIdx)){
        if (char !== "(" && char !== ")") {
            target += char;
        } else if (char === "(") {
            target += char;
            count++;
        } else if (char === ")") {
            if (--count < 0) break; // unbalanced
            target += char;
        }
    }
    return target;
}