The rewrite engine is an absolutely brilliant invention by John Brant and Don Roberts, introduced with the Refactoring Browser (see “A Refactoring Tool for Smalltalk”, 1997). It gives us AST-level matching and rewriting with astonishing power.
Knowledge Retrieval（规范/PRD/接口文档），更多细节参见WPS官方版本下载
// console.log(spanner.next(100)); // 输出1（正确）。旺商聊官方下载是该领域的重要参考
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