0.2.0 - Mid migration

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

@@ -0,0 +1,93 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+
+var _browserslist = require('browserslist');
+
+var _browserslist2 = _interopRequireDefault(_browserslist);
+
+var _postcss = require('postcss');
+
+var _postcss2 = _interopRequireDefault(_postcss);
+
+var _postcssValueParser = require('postcss-value-parser');
+
+var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+const regexLowerCaseUPrefix = /^u(?=\+)/;
+
+function unicode(range) {
+    const values = range.slice(2).split('-');
+    if (values.length < 2) {
+        return range;
+    }
+    const left = values[0].split('');
+    const right = values[1].split('');
+
+    if (left.length !== right.length) {
+        return range;
+    }
+
+    let questionCounter = 0;
+
+    const merged = left.reduce((group, value, index) => {
+        if (group === false) {
+            return false;
+        }
+        if (value === right[index] && !questionCounter) {
+            return group + value;
+        }
+        if (value === '0' && right[index] === 'f') {
+            questionCounter++;
+            return group + '?';
+        }
+        return false;
+    }, 'u+');
+
+    /*
+     * The maximum number of wildcard characters (?) for ranges is 5.
+     */
+
+    if (merged && questionCounter < 6) {
+        return merged;
+    }
+
+    return range;
+}
+
+/*
+ * IE and Edge before 16 version ignore the unicode-range if the 'U' is lowercase
+ *
+ * https://caniuse.com/#search=unicode-range
+ */
+
+function hasLowerCaseUPrefixBug(browser) {
+    return ~(0, _browserslist2.default)('ie <=11, edge <= 15').indexOf(browser);
+}
+
+function transform(legacy = false, node) {
+    node.value = (0, _postcssValueParser2.default)(node.value).walk(child => {
+        if (child.type === 'word') {
+            const transformed = unicode(child.value.toLowerCase());
+            child.value = legacy ? transformed.replace(regexLowerCaseUPrefix, 'U') : transformed;
+        }
+        return false;
+    }).toString();
+}
+
+exports.default = _postcss2.default.plugin('postcss-normalize-unicode', () => {
+    return (css, result) => {
+        const resultOpts = result.opts || {};
+        const browsers = (0, _browserslist2.default)(null, {
+            stats: resultOpts.stats,
+            path: __dirname,
+            env: resultOpts.env
+        });
+        css.walkDecls(/^unicode-range$/i, transform.bind(null, browsers.some(hasLowerCaseUPrefixBug)));
+    };
+});
+module.exports = exports['default'];