/// <reference types="node" />
import stream = require('stream');
import * as options from './src/options';
/**
 * Create a {@link NodeJS.ReadWriteStream} which consumes CSV records and
 * outputs them with geocoding information from smartystreets.
 *
 * Input records should be arrays of objects, with keys corresponding to column
 * names. This can be done by using `smartystreets.grouper(70)` stream
 * transformer to batch 70 records together into an array.
 *
 *     [{ street: "a", zipcode: "b" }, { street: "c", zipcode: "d"}, ...]
 *     [{ street: "e", zipcode: "f" }, ...]
 *
 * Output record format is controlled by {@link Options.outputStreamFormat}. By
 * default, the output will be in array format, but if `outputStreamFormat:
 * "object"` is set, output will look like:
 *
 *     { street: "a", zipcode: "b", ss_field1: "...", ... }
 *     { street: "c", zipcode: "d", ss_field1: "...", ... }
 *     ...
 *
 * @param opts Configuration options.
 */
declare function smartystreets(options: options.Options): stream.Transform;
declare namespace smartystreets {
    /** Geocoding options for smartystreets. */
    type Options = options.Options;
    /**
     * Create a stream which transforms input of the form:
     *
     *     {a: 1}
     *     {a: 2}
     *     {a: 3}
     *
     * ...to:
     *
     *     [{a: 1}, {a: 2}]
     *     [{a: 3}]
     *
     * ...using the specified `groupSize`.
     *
     * @param groupSize The number of records to put in each group.
     */
    function grouper(groupSize: number): stream.Transform;
}
export = smartystreets;