postcss-theme-fold/lib/extract-theme-variables.js

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"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
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    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.extractThemeVariables = void 0;
const postcss_1 = __importStar(require("postcss"));
const shared_1 = require("./shared");
/**
 * Extract variables from theme selectors and return map with selectors and values.
 */
async function extractThemeVariables(css) {
    const variablesMap = new Map();
    const postcssExtractThemeVariable = (0, postcss_1.plugin)('postcss-extract-theme-variable', () => (root) => {
        root.walkRules(({ selector, nodes }) => {
            if (!shared_1.THEME_SELECTOR_RE.test(selector) || !nodes) {
                return;
            }
            for (const node of nodes) {
                if (node.type === 'decl') {
                    if (!shared_1.VARIABLE_DECL_RE.test(node.prop)) {
                        throw new TypeError('Theme should contains only variable declarations.');
                    }
                    const prevValuesMap = variablesMap.get(selector) || new Map();
                    prevValuesMap.set(node.prop, node.value);
                    variablesMap.set(selector, prevValuesMap);
                }
            }
        });
    });
    const processLocalVariables = () => {
        for (const [, variables] of variablesMap) {
            for (const [variablleName, variableValue] of variables) {
                const matched = variableValue.match(shared_1.VARIABLE_FULL_RE);
                if (matched !== null) {
                    const processedVariable = variables.get(matched[1]);
                    if (processedVariable !== undefined) {
                        variables.set(variablleName, processedVariable);
                    }
                }
            }
        }
    };
    return (0, postcss_1.default)([postcssExtractThemeVariable()])
        .process(css, { from: '' })
        .then(processLocalVariables)
        .then(() => variablesMap);
}
exports.extractThemeVariables = extractThemeVariables;