/**
 * Prompt Template Renderer
 *
 * Provides deterministic, strict rendering of prompt templates with:
 * - Token expansion: {{today}}, {{now}}, {{repo_root}}, etc.
 * - Variable substitution: {{variable}}
 * - Conditionals: {{#if condition}}...{{else}}...{{/if}}
 * - Loops: {{#each items}}...{{/each}}
 * - HTML escaping by default
 * - Raw output: {{{raw}}}
 * - Strict mode: throws on unknown variables
 */
import { RenderContext, RenderOptions, ValidationResult, PromptTemplate, RenderedPrompt } from "./types.js";
/**
 * Validate that all required variables are present in context
 */
export declare function validateContext(template: string, context: RenderContext): ValidationResult;
/**
 * Render a prompt template with variable substitution and control structures
 *
 * @param template - Template string with {{}} syntax
 * @param context - Variables to substitute
 * @param options - Rendering options (strict mode, escaping)
 * @returns Rendered string
 *
 * @example
 * ```typescript
 * const result = renderPrompt("Hello {{name}}!", { name: "World" });
 * // => "Hello World!"
 * ```
 *
 * @example Conditionals
 * ```typescript
 * const result = renderPrompt(
 *   "{{#if hasError}}Error: {{error}}{{/if}}",
 *   { hasError: true, error: "Not found" }
 * );
 * // => "Error: Not found"
 * ```
 *
 * @example Loops
 * ```typescript
 * const result = renderPrompt(
 *   "{{#each items}}{{this}}, {{/each}}",
 *   { items: ["a", "b", "c"] }
 * );
 * // => "a, b, c, "
 * ```
 *
 * @example Token Expansion
 * ```typescript
 * const result = renderPrompt(
 *   "Created on {{today}} at {{branch}}",
 *   {}
 * );
 * // => "Created on 2025-11-23 at main"
 * ```
 */
export declare function renderPrompt(template: string, context: RenderContext, options?: RenderOptions): string;
/**
 * Render a prompt template with full metadata and hashing
 */
export declare function renderPromptTemplate(template: PromptTemplate, context: RenderContext, options?: RenderOptions): RenderedPrompt;
/**
 * Compute content hash for a template
 */
export declare function computeContentHash(content: string): string;