0.2.0 - Mid migration

web/node_modules/postcss-normalize-url/dist/index.js

@@ -0,0 +1,122 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+
+var _path = require('path');
+
+var _path2 = _interopRequireDefault(_path);
+
+var _postcss = require('postcss');
+
+var _postcss2 = _interopRequireDefault(_postcss);
+
+var _postcssValueParser = require('postcss-value-parser');
+
+var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser);
+
+var _normalizeUrl = require('normalize-url');
+
+var _normalizeUrl2 = _interopRequireDefault(_normalizeUrl);
+
+var _isAbsoluteUrl = require('is-absolute-url');
+
+var _isAbsoluteUrl2 = _interopRequireDefault(_isAbsoluteUrl);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+const multiline = /\\[\r\n]/;
+const escapeChars = /([\s\(\)"'])/g;
+
+function convert(url, options) {
+    if ((0, _isAbsoluteUrl2.default)(url) || url.startsWith('//')) {
+        let normalizedURL = null;
+
+        try {
+            normalizedURL = (0, _normalizeUrl2.default)(url, options);
+        } catch (e) {
+            normalizedURL = url;
+        }
+
+        return normalizedURL;
+    }
+
+    // `path.normalize` always returns backslashes on Windows, need replace in `/`
+    return _path2.default.normalize(url).replace(new RegExp('\\' + _path2.default.sep, 'g'), '/');
+}
+
+function transformNamespace(rule) {
+    rule.params = (0, _postcssValueParser2.default)(rule.params).walk(node => {
+        if (node.type === 'function' && node.value.toLowerCase() === 'url' && node.nodes.length) {
+            node.type = 'string';
+            node.quote = node.nodes[0].quote || '"';
+            node.value = node.nodes[0].value;
+        }
+        if (node.type === 'string') {
+            node.value = node.value.trim();
+        }
+        return false;
+    }).toString();
+}
+
+function transformDecl(decl, opts) {
+    decl.value = (0, _postcssValueParser2.default)(decl.value).walk(node => {
+        if (node.type !== 'function' || node.value.toLowerCase() !== 'url' || !node.nodes.length) {
+            return false;
+        }
+
+        let url = node.nodes[0];
+        let escaped;
+
+        node.before = node.after = '';
+        url.value = url.value.trim().replace(multiline, '');
+
+        // Skip empty URLs
+        // Empty URL function equals request to current stylesheet where it is declared
+        if (url.value.length === 0) {
+            url.quote = '';
+
+            return false;
+        }
+
+        if (/^data:(.*)?,/i.test(url.value)) {
+            return false;
+        }
+
+        if (!/^.+-extension:\//i.test(url.value)) {
+            url.value = convert(url.value, opts);
+        }
+
+        if (escapeChars.test(url.value) && url.type === 'string') {
+            escaped = url.value.replace(escapeChars, '\\$1');
+            if (escaped.length < url.value.length + 2) {
+                url.value = escaped;
+                url.type = 'word';
+            }
+        } else {
+            url.type = 'word';
+        }
+
+        return false;
+    }).toString();
+}
+
+exports.default = _postcss2.default.plugin('postcss-normalize-url', opts => {
+    opts = Object.assign({}, {
+        normalizeProtocol: false,
+        stripFragment: false,
+        stripWWW: false
+    }, opts);
+
+    return css => {
+        css.walk(node => {
+            if (node.type === 'decl') {
+                return transformDecl(node, opts);
+            } else if (node.type === 'atrule' && node.name.toLowerCase() === 'namespace') {
+                return transformNamespace(node);
+            }
+        });
+    };
+});
+module.exports = exports['default'];