export type HtmdxSeverity = 'error' | 'warning';
export type HtmdxDiagnosticCode = 'unknown-component' | 'unclosed-component' | 'unknown-prop' | 'missing-required-prop' | 'prop-type-string' | 'prop-type-number' | 'prop-type-boolean' | 'prop-type-json' | 'brace-expression-prop' | 'brace-expression-body' | 'import-export-body' | 'markdown-body-nested-tags' | 'body-not-allowed' | 'event-handler-attribute' | 'html-element-not-allowed' | 'unknown-layout' | 'body-contract' | 'render-failed' | 'unknown-theme' | 'unknown-frontmatter-field' | 'image-missing-alt' | 'invalid-html-nesting';
export type HtmdxDiagnostic = {
    code: HtmdxDiagnosticCode;
    severity: HtmdxSeverity;
    message: string;
    /** 1-based line in the original source. */
    line: number;
    /** 1-based column in the original source. */
    column: number;
    /** 0-based offset into the original source. */
    offset: number;
    length: number;
};
export declare class HtmdxSourceError extends Error {
    readonly code: HtmdxDiagnosticCode;
    readonly offset?: number | undefined;
    readonly length?: number | undefined;
    constructor(code: HtmdxDiagnosticCode, message: string, offset?: number | undefined, length?: number | undefined);
}
export declare function toDiagnostic(source: string, code: HtmdxDiagnosticCode, message: string, offset: number, length: number, severity?: HtmdxSeverity): HtmdxDiagnostic;