import * as binaryen from "./wasm-encoder.js";
import type { Expression } from "../ast/nodes.js";
import { type FunctionSig, FunctionContext } from "./types.js";
/**
 * Walk a lambda body and collect identifiers that reference variables from
 * the enclosing scope ("free variables"). These are the values that must be
 * stored in a closure environment record.
 */
export declare function collectFreeVariables(body: Expression[], paramNames: Set<string>, constGlobals: Map<string, binaryen.Type>, fnSigs: Map<string, FunctionSig>): Map<string, {
    wasmType: binaryen.Type;
}>;
/**
 * Allocate a closure pair on the heap: [table_index: i32, env_ptr: i32].
 * Returns a block expression that evaluates to the pair's heap pointer.
 */
export declare function allocClosurePair(mod: binaryen.Module, ctx: FunctionContext, tableIndexExpr: binaryen.ExpressionRef, envPtrExpr: binaryen.ExpressionRef, uniqueId: string): binaryen.ExpressionRef;
//# sourceMappingURL=closures.d.ts.map