/** A Markdown document split at its frontmatter delimiters by {@link splitFrontmatter}. */
export interface IFrontmatterSplit {
    /** The lines between the `---` delimiters, `\n`-joined; `undefined` when the document has none. */
    readonly frontmatter: string | undefined;
    /** Everything after the closing delimiter line — the whole (normalised) document when there is no frontmatter. */
    readonly body: string;
    /** Lines before the frontmatter's first line — pass as `lineOffset` so a parse error names the FILE's line. */
    readonly lineOffset: number;
    /**
     * An opening `---` line with no closing one. Read as "no frontmatter" (a
     * Markdown document may open with a thematic break), but a caller with a
     * warning channel says so.
     */
    readonly unterminated: boolean;
}
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