/**
 * Variable substitution utilities for spec-kit templates
 *
 * Provides functions for substituting {{variable}} placeholders
 * in template content with actual values.
 */
import type { TemplateVariables } from './types.js';
/**
 * Substitute variables in template content
 *
 * Uses mustache-style {{variable}} syntax. Only known variables
 * from TemplateVariables are substituted; unknown variables are
 * left unchanged in the content.
 *
 * @param content - Template content with {{variable}} placeholders
 * @param variables - Variables to substitute (partial - missing values are skipped)
 * @returns Content with variables substituted
 *
 * @example
 * ```typescript
 * const result = substituteVariables(
 *   'Feature: {{feature_name}} ({{date}})',
 *   { feature_name: 'my-feature', date: '2026-02-01' }
 * );
 * // Result: 'Feature: my-feature (2026-02-01)'
 * ```
 *
 * @example
 * ```typescript
 * // Unknown variables are preserved
 * const result = substituteVariables(
 *   'Name: {{feature_name}}, Unknown: {{unknown}}',
 *   { feature_name: 'test' }
 * );
 * // Result: 'Name: test, Unknown: {{unknown}}'
 * ```
 */
export declare function substituteVariables(content: string, variables: Partial<TemplateVariables>): string;
/**
 * Create a TemplateVariables object from available context
 *
 * Convenience function to construct TemplateVariables from
 * commonly available values.
 *
 * @param options - Options for creating variables
 * @returns TemplateVariables object
 *
 * @example
 * ```typescript
 * const vars = createTemplateVariables({
 *   branch: '159-c5-template-file-definitions',
 *   description: 'Add template file definitions'
 * });
 * // vars.feature_name will be 'c5-template-file-definitions'
 * // vars.date will be today's date
 * ```
 */
export declare function createTemplateVariables(options: {
    /** Full branch name */
    branch?: string;
    /** Feature description */
    description?: string;
    /** Feature name (if not derived from branch) */
    featureName?: string;
    /** Date (defaults to today in ISO format) */
    date?: string;
}): Partial<TemplateVariables>;
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