wehub-resource-sync
54 lines
2.4 KiB
TypeScript
54 lines
2.4 KiB
TypeScript
// Composer thinking-as-content decoding for the Cursor executor (verbatim, no host imports).
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// ─── Composer thinking-as-content decoding ─────────────────────────────────
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//
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// The Cursor `composer-*` family encodes its visible reply inside the
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// `thinking` field, marked off from the (private) chain-of-thought by a
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// final `</think>` sentinel. Everything AFTER the last `</think>` is the
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// user-facing reply; the prefix must stay hidden.
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//
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// Ported from decolua/9router#1310 by Noé Rivera. Same algorithm, adapted
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// to OmniRoute's StreamCtx-based pipeline so streaming + non-streaming
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// share the accumulation path.
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const COMPOSER_THINK_END = "</think>";
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export function isComposerModel(model: string | undefined | null): boolean {
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const id = String(model ?? "")
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.split("/")
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.pop();
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return /^composer(?:-|$)/i.test(id ?? "");
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}
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// Composer's protobuf sometimes wraps the visible suffix in sentinel tags:
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// `<｜final｜>` (full-width pipes) or `<|final|>` (ASCII), optionally closed
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// with a matching `<｜/final｜>` / `<|/final|>`. These are protocol-internal
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// and must never leak to OpenAI-compatible clients (decolua/9router#1316).
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const COMPOSER_OPEN_MARKER = /^\s*<[｜|]\s*final\s*[｜|]>\s*/i;
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const COMPOSER_CLOSE_MARKER = /\s*<[｜|]\s*\/\s*final\s*[｜|]>\s*$/i;
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const COMPOSER_PARTIAL_OPEN = /^\s*<(?![｜|/])/;
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const COMPOSER_PARTIAL_OPEN_PIPE = /^\s*<[｜|][^>]*$/;
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export function visibleComposerContentFromThinking(thinking: string): string {
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if (!thinking) return "";
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const endIdx = thinking.lastIndexOf(COMPOSER_THINK_END);
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if (endIdx < 0) return "";
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let visible = thinking.slice(endIdx + COMPOSER_THINK_END.length).trimStart();
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if (COMPOSER_OPEN_MARKER.test(visible)) {
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visible = visible.replace(COMPOSER_OPEN_MARKER, "");
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} else if (COMPOSER_PARTIAL_OPEN.test(visible) || COMPOSER_PARTIAL_OPEN_PIPE.test(visible)) {
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// A streamed chunk delivered only a partial opening marker (e.g. `<` or
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// `<｜fin`). Hold back everything until more data arrives so the marker
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// fragment never leaks as content.
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return "";
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}
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return visible.replace(COMPOSER_CLOSE_MARKER, "").trim();
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}
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export function composerReasoningRemainder(thinking: string): string {
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if (!thinking) return "";
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const endIdx = thinking.lastIndexOf(COMPOSER_THINK_END);
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if (endIdx < 0) return thinking;
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return thinking.slice(0, endIdx);
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}
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