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cjk-autospace/dist/core/split.d.ts
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import type { Finder } from "./finder.js";
/**
* 隔離 el 之邊界詞元供綁定(最小綁定)。side="tail" 取末詞元、="head" 取首詞元。
* 回傳**應綁定之節點**:
* · 可切且確實切分 → tail 回克隆(末詞元)、head 回原 el(已只剩首詞元,其餘入克隆);
* · 不可切/無法定位切點/整元素即該詞元 → 回 el 本身(綁整個元素,退化但安全)。
* 切出之克隆標 splitoff,由 revertPass 併回;故 render→revert 還原一致(I6)。
*/
export declare function isolateBoundaryToken(el: Element, side: "head" | "tail", anyCjk: RegExp, pass: string, finder: Finder, ownedElements: WeakSet<Element>): Element;
/**
* 把 el 之**指定切點**(精確字位)起至末尾剝入克隆並回傳(供 orphan:自實義字綁至塊末)。
* 不可切或切點在最起點 → 回 null(呼叫端綁整個直接子)。
*/
export declare function splitElementAt(el: Element, textNode: Text, offset: number, pass: string, finder: Finder, ownedElements: WeakSet<Element>): Element | null;