parse.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.parse = void 0;
const utils_1 = require("./utils");
/**
 * parse the LESS source, and extract variables in `#less-vars {...}`;
 * variable names should be kebab-case, and will be converted into camelCase
 * @param {string} source
 * @returns {object}
 */
function parse(source) {
    const vars = {};
    const m = source.replace(/[\r\n]/gm, ' ').match(/#less-vars\s*{([^{}]+)}/gm);
    if (m) {
        m.forEach((m) => m
            .replace(/.*{|}.*/, '')
            .split(';')
            .forEach((kv) => {
            const i = kv.indexOf(':');
            if (i > 0) {
                const k = kv.substr(0, i).trim();
                const v = kv.substr(i + 1).trim();
                if (k.length > 0 && v.length > 0) {
                    vars[k] = v;
                }
            }
        }));
    }
    const result = {};
    Object.entries(vars).forEach(([k, v]) => {
        if (!utils_1.isKebabCase(k)) {
            throw new Error(`Less variable is not kebab-case: ${k}`);
        }
        result[utils_1.kebabCaseToCamelCase(k)] = v;
    });
    return result;
}
exports.parse = parse;