import { Position } from "unist";
export interface ElmSymbol {
    name: string;
    type?: string;
}
export interface Dependencies {
    [packageName: string]: string;
}
export interface EnvironmentSpec {
    /**
     * Elm package dependencies as name=>version pairs
     *
     * Acceptable version formats:
     * - MAJOR
     * - MAJOR.MINOR
     * - MAJOR.MINOR.PATCH
     * - "latest"
     */
    dependencies: Dependencies;
    /**
     * absolute paths to source directories
     *
     * This is an advanced feature, which is only needed in literate-elm programs
     * to test local development copies of Elm packages
     */
    sourceDirectories: string[];
}
export declare type EnvironmentStatus = "ready" | "error";
export interface EnvironmentMetadata {
    status: EnvironmentStatus;
    createdAt: number;
    expiresAt?: number;
    errorMessage?: string;
}
export interface Environment {
    metadata: EnvironmentMetadata;
    spec: EnvironmentSpec;
    workingDirectory: string;
}
export interface Program {
    environment: Environment;
    codeNodes: CodeNode[];
    expressionNodes: ExpressionNode[];
}
export declare type ProgramResultStatus = "succeeded" | "failed";
export declare type MessageSeverity = "error" | "warning" | "info";
export interface Message {
    text: string;
    position: Position;
    fileIndex: number;
    severity: MessageSeverity;
    node: CodeNode | ExpressionNode | null;
}
export interface SucceededProgramResult {
    program: Program;
    status: ProgramResultStatus & "succeeded";
    messages: Message[];
    evaluatedExpressions: EvaluatedExpression[];
    debugLog: string[];
}
export interface FailedProgramResult {
    program: Program;
    status: ProgramResultStatus & "failed";
    messages: Message[];
}
export declare type ProgramResult = SucceededProgramResult | FailedProgramResult;
export interface CodeNode {
    text: string;
    position: Position;
    fileIndex?: number;
}
export interface ExpressionNode {
    text: string;
    position: Position;
    fileIndex?: number;
}
export interface EvaluatedExpression {
    node: ExpressionNode;
    value: any;
    valueStringRepresentation: string;
}