110 lines
2.4 KiB
JavaScript
110 lines
2.4 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = void 0;
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var _postcss = _interopRequireDefault(require("postcss"));
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var _postcssValueParser = _interopRequireDefault(require("postcss-value-parser"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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const pluginName = 'postcss-import-parser';
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function getArg(nodes) {
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return nodes.length !== 0 && nodes[0].type === 'string' ? nodes[0].value : _postcssValueParser.default.stringify(nodes);
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}
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function getUrl(node) {
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if (node.type === 'function' && node.value.toLowerCase() === 'url') {
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return getArg(node.nodes);
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}
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if (node.type === 'string') {
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return node.value;
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}
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return null;
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}
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function parseImport(params) {
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const {
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nodes
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} = (0, _postcssValueParser.default)(params);
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if (nodes.length === 0) {
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return null;
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}
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const url = getUrl(nodes[0]);
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if (!url || url.trim().length === 0) {
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return null;
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}
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return {
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url,
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media: _postcssValueParser.default.stringify(nodes.slice(1)).trim().toLowerCase()
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};
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}
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function walkAtRules(css, result, filter) {
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const items = [];
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css.walkAtRules(/^import$/i, atRule => {
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// Convert only top-level @import
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if (atRule.parent.type !== 'root') {
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return;
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}
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if (atRule.nodes) {
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result.warn("It looks like you didn't end your @import statement correctly. " + 'Child nodes are attached to it.', {
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node: atRule
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});
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return;
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}
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const parsed = parseImport(atRule.params);
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if (!parsed) {
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// eslint-disable-next-line consistent-return
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return result.warn(`Unable to find uri in '${atRule.toString()}'`, {
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node: atRule
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});
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}
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if (filter && !filter(parsed)) {
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return;
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}
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atRule.remove();
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const {
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url,
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media
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} = parsed;
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items.push({
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url,
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media
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});
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});
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return items;
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}
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function uniq(array) {
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return array.reduce((acc, d) => !acc.find(el => el.url === d.url && el.media === d.media) ? [...acc, d] : acc, []);
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}
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var _default = _postcss.default.plugin(pluginName, (options = {}) => function process(css, result) {
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const traversed = walkAtRules(css, result, options.filter);
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const paths = uniq(traversed);
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paths.forEach(item => {
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result.messages.push({
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pluginName,
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type: 'import',
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item
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});
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});
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});
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exports.default = _default;
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