import { Model } from "@anz-bank/sysl/model";
import { SemVer } from "semver";
/** The possible Sysl protobuf representations. */
export type ProtobufMode = "json" | "pb" | "textpb";
export type ImportOptions = {
    "app-name"?: string;
    output?: string;
    package?: string;
    format?: string;
    "import-paths"?: string[];
};
/** A wrapper around a Sysl executable to perform operations on sources. */
export declare class Sysl {
    /** The path to the Sysl executable to use. */
    readonly path: string;
    /** Memoized {@link spawnBuffer}. */
    private readonly memoSpawn;
    constructor(path: string);
    /**
     * Returns true if Sysl debugging is enabled.
     *
     * Sysl debug is enabled if the {@code SYSL_DEBUG} env var is anything other than "" or "off".
     */
    static isDebugEnabled(): boolean;
    /** Returns a protobuf message representing the compiled content of source. */
    protobufModuleFromSource(source: string, sourcePath: string): Promise<any>;
    /** Returns a protobuf message representing the compiled content of source. */
    modelFromSource(source: string, sourcePath: string): Promise<Model>;
    /** Returns a protobuf message representing the compiled content of the spec at modelPath. */
    protobuf(modelPath: string, mode?: ProtobufMode): Promise<Buffer>;
    /** Returns a protobuf message representing the compiled content of source. */
    protobufFromSource(source: string, sourcePath: string, mode?: ProtobufMode): Promise<Buffer>;
    /** Returns the output of sysl transform on a model using a script. */
    transformSource(modelPath: string, scriptPath: string, syslSource: string): Promise<string>;
    /** Returns the output of sysl transform on a model using a script. */
    transformSourceBuffer(modelPath: string, scriptPath: string, syslSource: string): Promise<Buffer>;
    /** Imports the {@code input} file to a Sysl spec. */
    import(input: string, options?: ImportOptions): Promise<string>;
    /** Returns the version of Sysl, or undefined if the version cannot be determined. */
    version(): Promise<string | undefined>;
    /** Returns the semantic version of Sysl extracted from the version code in info output. */
    semver(): Promise<SemVer | null | undefined>;
    /** Returns the string to pass to stdin for Sysl to process the content at path. */
    private toStdin;
}