import type { Comment, Program, SourceLocation } from 'estree';
import { StepperBaseNode } from '../interface';
import type { RedexInfo } from '..';
import { StepperStatement } from './Statement';
import { type StepperExpression, type StepperPattern } from '.';
export declare class StepperProgram extends StepperBaseNode<Program> implements Program {
    readonly body: StepperStatement[];
    readonly comments?: Comment[] | undefined;
    readonly sourceType: 'script' | 'module';
    constructor(body: StepperStatement[], // TODO: Add support for variable declaration
    comments?: Comment[] | undefined, leadingComments?: Comment[] | undefined, trailingComments?: Comment[] | undefined, loc?: SourceLocation | null | undefined, range?: [number, number] | undefined);
    isContractible(): boolean;
    isOneStepPossible(redex: RedexInfo): boolean;
    contract(): StepperProgram;
    oneStep(redex: RedexInfo): StepperProgram;
    static create(node: Program): StepperProgram;
    substitute(id: StepperPattern, value: StepperExpression, redex: RedexInfo): StepperBaseNode;
    scanAllDeclarationNames(): string[];
    freeNames(): string[];
    allNames(): string[];
    rename(before: string, after: string): StepperProgram;
}