| 'use strict'; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.default = canUnquote; |
| |
| var _unquote = require('./unquote'); |
| |
| var _unquote2 = _interopRequireDefault(_unquote); |
| |
| function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } |
| |
| /** |
| * Can unquote attribute detection from mothereff.in |
| * Copyright Mathias Bynens <https://mathiasbynens.be/> |
| * https://github.com/mathiasbynens/mothereff.in |
| */ |
| const escapes = /\\([0-9A-Fa-f]{1,6})[ \t\n\f\r]?/g; |
| const range = /[\u0000-\u002c\u002e\u002f\u003A-\u0040\u005B-\u005E\u0060\u007B-\u009f]/; |
| |
| function canUnquote(value) { |
| value = (0, _unquote2.default)(value); |
| if (value === '-' || value === '') { |
| return false; |
| } |
| value = value.replace(escapes, 'a').replace(/\\./g, 'a'); |
| return !(range.test(value) || /^(?:-?\d|--)/.test(value)); |
| } |
| module.exports = exports['default']; |