/** @category Source */
interface Location {
    line: number;
    column: number;
}
/**
 * A representation of source input to GraphQL. The `name` and `locationOffset` parameters are
 * optional, but they are useful for clients who store GraphQL documents in source files.
 * For example, if the GraphQL input starts at line 40 in a file named `Foo.graphql`, it might
 * be useful for `name` to be `"Foo.graphql"` and location to be `{ line: 40, column: 1 }`.
 * The `line` and `column` properties in `locationOffset` are 1-indexed.
 */
export declare class Source {
    /** The GraphQL source text. */
    body: string;
    /** Name used in diagnostics for this source, such as a file path or request name. */
    name: string;
    /** One-indexed line and column where this source begins. */
    locationOffset: Location;
    /**
     * Creates a Source instance.
     * @param body - The GraphQL source text.
     * @param name - Name used in diagnostics for this source.
     * @param locationOffset - One-indexed line and column where this source begins.
     * @example
     * ```ts
     * import { Source } from 'graphql/language';
     *
     * const source = new Source('type Query { greeting: String }', 'schema.graphql', {
     *   line: 10,
     *   column: 1,
     * });
     *
     * source.body; // => 'type Query { greeting: String }'
     * source.name; // => 'schema.graphql'
     * source.locationOffset; // => { line: 10, column: 1 }
     * ```
     */
    constructor(body: string, name?: string, locationOffset?: Location);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
}
/**
 * Test if the given value is a Source object.
 *
 * @internal
 */
export declare function isSource(source: unknown): source is Source;
export {};