文字过滤，支持敏感词匹配，由DFA算法实现
- 优化代码结构。
- 增加识别敏感词中间填充了特殊字符的情况。
- replace 接口增加自定义特殊字符过滤字段。
npm install sensitive-words-dfa-filter --savelet Filter = require('sensitive-words-dfa-filter');
// 设定需要搜索的敏感字
let search = [
'AB', 'ABC', '治国'
];
// 初始化文字过滤器，将敏感字做成字典
Filter.instance().init(search);
// 运行
// This is "**｜**｜**｜**｜**" filter word!
console.log(Filter.instance().replace('This is "AB｜A B｜AAB｜A1B｜A@B" filter word!'));T
// This is "***｜***｜***｜***" filter word!
console.log(Filter.instance().replace('This is "ABC｜A B C｜A1B1C｜A@B@C" filter word!'));
// This is "??｜??｜??｜??｜??" filter word!
console.log(Filter.instance().replace('This is "治国｜治 国｜治A国｜治1国｜治@国" filter word!', '?', 'ABC'));