/**
 * Shared HTML helper for marked-extensions packages.
 *
 * SOURCE OF TRUTH: packages/.helper/utils/markdown-utils.ts
 * A verbatim copy of this file is written into each consuming package's `src/`
 * by `bun run generate:helpers`. Do NOT edit the generated copies — edit here
 * and re-run the generator. Each copy is bundled inline at build time, so
 * packages stay self-contained (no cross-package runtime dependency).
 *
 * Only genuinely universal helpers belong here. `escapeHtml` is used by every
 * package; partial-use helpers (e.g. hashId, stripQuotes) stay local to their
 * users so no package carries code it doesn't call.
 */
/**
 * Escapes characters that are unsafe in HTML text/attribute contexts.
 * @param value - String to escape
 * @returns HTML-escaped string
 */
export declare function escapeHtml(value: string): string;