import type { Compartment } from '@codemirror/state';
import type { EditorView } from '@codemirror/view';
import type { RefObject } from 'react';
type GutterSeverity = 'error' | 'warning';
/**
 * Minimal shape shared by CodeMirror's `Diagnostic` and our `InlineDiagnostic`,
 * covering only the fields the gutter needs — avoids casting between the two.
 */
type LineDiagnosticInput = {
    from: number;
    severity?: 'hint' | 'info' | 'warning' | 'error';
};
/**
 * Returns the highest severity (`error` beats `warning`) among the diagnostics
 * that start on the line at `lineFrom`. Multi-line diagnostics are attributed to
 * the line containing `d.from`; `info`/`hint` diagnostics are ignored. Returns
 * `null` when the line has no `error`/`warning` diagnostic.
 *
 * @param diagnostics - all diagnostics in the editor
 * @param lineFrom - document offset of the line's first character
 * @param getLineFrom - maps any document position to its line's start offset
 * @internal
 */
export declare function _buildLineMarker(diagnostics: readonly LineDiagnosticInput[], lineFrom: number, getLineFrom: (pos: number) => number): GutterSeverity | null;
/**
 * Builds the lint gutter extension. The column is always rendered (matching the fold
 * gutter) so the editor never reflows when markers appear or disappear.
 *
 * @internal
 */
export declare function getLintGutterExtension(shouldShowMarkers: boolean): import("@codemirror/state").Extension;
/**
 * Updates the lint gutter extension in `lintGutterCompartment` to show or hide markers.
 * The gutter column itself is always installed; only marker visibility toggles.
 *
 * Markers are driven by whatever diagnostics currently exist in CodeMirror's shared
 * lint state, regardless of which linter populated it.
 *
 * @internal
 */
export declare function configureLintGutter(showLintGutter: boolean | undefined, editorViewRef: RefObject<EditorView>, lintGutterCompartment: Compartment, isLintGutterMarkersShownRef: RefObject<boolean>): void;
export {};
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