import { Expr } from "../ast";
/**
 * JavaScript compilation options
 */
export interface JavaScriptCompileOptions {
    /** If true, always wrap output as a function (even if _ is not used) */
    asFunction?: boolean;
    /** If true, immediately execute the function with null as input */
    execute?: boolean;
    /** If true, strip guard/check assertions from output */
    stripGuards?: boolean;
}
/**
 * Result of JavaScript compilation
 */
export interface JavaScriptCompileResult {
    /** The generated JavaScript code */
    code: string;
    /** Whether the code uses the input variable _ */
    usesInput: boolean;
}
/**
 * Compiles Elo expressions to JavaScript code
 * Uses luxon for temporal operations
 *
 * This compiler works in two phases:
 * 1. Transform AST to typed IR
 * 2. Emit JavaScript from IR (tracking required helpers)
 * 3. Wrap in IIFE with helper definitions if needed
 *
 * If the expression uses `_` (input variable), the output is a function
 * that takes `_` as a parameter instead of an IIFE.
 */
export declare function compileToJavaScript(expr: Expr, options?: JavaScriptCompileOptions): string;
/**
 * Compiles Elo expressions to JavaScript with metadata about input usage.
 * Use this when you need to know if the expression uses input.
 *
 * Every Elo program compiles to a function taking _ as input parameter.
 * The usesInput field indicates whether _ is actually referenced.
 */
export declare function compileToJavaScriptWithMeta(expr: Expr, options?: JavaScriptCompileOptions): JavaScriptCompileResult;
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