/**
 * extractPlaceholders.ts
 *
 * Extracts placeholders from a markdown file.
 * Placeholders can be:
 * - @cmd[command] - Execute a command
 * - @import[file.md#heading] - Import a section from a markdown file
 * - @import[file.ts:symbol] - Import a symbol from a code file
 * - @import[file.ts:symbol1,symbol2] - Import multiple symbols from a code file
 * - @import[file.md#heading as h2] - Import with heading level override
 * - @import[file.md#heading as h2 "New Title"] - Import with heading level and text override
 */
export interface Placeholder {
    type: 'cmd' | 'import';
    raw: string;
    lineNumber: number;
    command?: string;
    importPath?: string;
    heading?: string;
    importSymbol?: string;
    importSymbolList?: string[];
    headingLevelOverride?: string;
    headingTextOverride?: string;
}
export declare function extractPlaceholders(content: string): Placeholder[];