BM25Document

Pure TypeScript BM25 (Okapi BM25) inverted index for keyword search.

Zero external dependencies. Suitable for all runtimes including Cloudflare Workers. Designed for moderate corpus sizes (up to ~100K documents) where an in-process index is viable.

BM25 parameters default to the standard values from Robertson & Zaragoza (2009): k1 = 1.2, b = 0.75.

Properties

id

id: string;

Unique identifier for this document.

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text

text: string;

The text content to index.