/**
 * Injects the ::highlight() CSS rules into the document <head>.
 * Safe to call multiple times — only injects once.
 */
export declare function ensureHighlightStyles(): void;
/**
 * Token types that map to highlight names.
 * Used to create CSS.highlights entries with the `astryx-` prefix.
 */
export declare const TOKEN_TYPES: readonly ["keyword", "string", "comment", "number", "function", "type", "tag", "attribute", "property", "operator", "constant", "punctuation", "variable"];
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