/**
 * A location in source text
 */
export interface Location {
    line: number;
    column: number;
    position: number;
    /**
     * The file, internal module, shared object, etc.
     */
    unit?: string;
    length?: number;
}
export declare function locationText(loc: Location): string;
export interface Issue {
    location?: Location;
    source?: string;
    message?: string;
    level: IssueLevel;
    stack?: string;
    toString?(): string;
}
export declare enum IssueLevel {
    Error = 0,
    Warning = 1,
    Note = 2,
    Debug = 5
}
declare const issueTypes: readonly ["Error", "Warning", "Note", "Debug"];
type IssueHelperName = Lowercase<(typeof issueTypes)[number]>;
export type IssueHelpers<I> = Record<IssueHelperName, (message: string, init: I) => Issue>;
export declare function createIssueHelpers<const I>(parse: (input: I) => Pick<Issue, 'location' | 'source'>): IssueHelpers<I>;
export declare function isIssue(i: unknown): i is Issue;
export interface IssueFormatting {
    colors: boolean;
    trace: boolean;
}
/**
 * The entry point for the "current" file being processed.
 * Used for last-ditch attempt at getting an issue's source file name
 */
export declare let __entry: string | undefined;
export declare function __setEntry(entry: string): void;
export declare function getSource(path: string | undefined, offset: number): string | undefined;
export declare function stringifyIssue(i: Issue, options: Partial<IssueFormatting>): string;
/**
 * Report an issue
 * @internal
 */
export declare function emitIssue(issue: Issue): void;
export declare function onIssue(handler: (issue: Issue) => unknown): void;
export {};