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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _path = _interopRequireDefault(require("path"));
var _postcssValueParser = _interopRequireDefault(require("postcss-value-parser"));
var _normalizeUrl = _interopRequireDefault(require("normalize-url"));
var _isAbsoluteUrl = _interopRequireDefault(require("is-absolute-url"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const multiline = /\\[\r\n]/; // eslint-disable-next-line no-useless-escape
const escapeChars = /([\s\(\)"'])/g;
function convert(url, options) {
if ((0, _isAbsoluteUrl.default)(url) || url.startsWith('//')) {
let normalizedURL = null;
try {
normalizedURL = (0, _normalizeUrl.default)(url, options);
} catch (e) {
normalizedURL = url;
}
return normalizedURL;
} // `path.normalize` always returns backslashes on Windows, need replace in `/`
return _path.default.normalize(url).replace(new RegExp('\\' + _path.default.sep, 'g'), '/');
}
function transformNamespace(rule) {
rule.params = (0, _postcssValueParser.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, _postcssValueParser.default)(decl.value).walk(node => {
if (node.type !== 'function' || node.value.toLowerCase() !== 'url') {
return false;
}
node.before = node.after = '';
if (!node.nodes.length) {
return false;
}
let url = node.nodes[0];
let escaped;
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();
}
function pluginCreator(opts) {
opts = Object.assign({}, {
normalizeProtocol: false,
stripHash: false,
stripWWW: false,
stripTextFragment: false
}, opts);
return {
postcssPlugin: 'postcss-normalize-url',
OnceExit(css) {
css.walk(node => {
if (node.type === 'decl') {
return transformDecl(node, opts);
} else if (node.type === 'atrule' && node.name.toLowerCase() === 'namespace') {
return transformNamespace(node);
}
});
}
};
}
pluginCreator.postcss = true;
var _default = pluginCreator;
exports.default = _default;
module.exports = exports.default;