DefinitelyTyped/lodash/lodash-tests.ts

/// <reference path="lodash.d.ts" />

declare var $: any, jQuery: any;

interface IFoodOrganic {
    name: string;
    organic: boolean;
}

interface IFoodType {
    name: string;
    type: string;
}

interface IFoodCombined {
    name: string;
    organic: boolean;
    type: string;
}

interface IStoogesQuote {
    name: string;
    quotes: string[];
}

interface IStoogesAge {
    name: string;
    age: number;
}

interface IStoogesCombined {
    name: string;
    age: number;
    quotes: string[];
}

interface IKey {
    dir: string;
    code: number;
}

interface IDictionary<T> {
    [index: string]: T;
}

var foodsOrganic: IFoodOrganic[] = [
    { name: 'banana', organic: true },
    { name: 'beet', organic: false },
];
var foodsType: IFoodType[] = [
    { name: 'apple', type: 'fruit' },
    { name: 'banana', type: 'fruit' },
    { name: 'beet', type: 'vegetable' }
];
var foodsCombined: IFoodCombined[] = [
    { 'name': 'apple', 'organic': false, 'type': 'fruit' },
    { 'name': 'carrot', 'organic': true, 'type': 'vegetable' }
];

var stoogesQuotes: IStoogesQuote[] = [
    { 'name': 'curly', 'quotes': ['Oh, a wise guy, eh?', 'Poifect!'] },
    { 'name': 'moe', 'quotes': ['Spread out!', 'You knucklehead!'] }
];
var stoogesAges: IStoogesAge[] = [
    { 'name': 'moe', 'age': 40 },
    { 'name': 'larry', 'age': 50 }
];
var stoogesAgesDict: IDictionary<IStoogesAge> = {
    first: { 'name': 'moe', 'age': 40 },
    second: { 'name': 'larry', 'age': 50 }
};
var stoogesCombined: IStoogesCombined[] = [
    { 'name': 'curly', 'age': 30, 'quotes': ['Oh, a wise guy, eh?', 'Poifect!'] },
    { 'name': 'moe', 'age': 40, 'quotes': ['Spread out!', 'You knucklehead!'] }
];

var keys: IKey[] = [
    { 'dir': 'left', 'code': 97 },
    { 'dir': 'right', 'code': 100 }
];

class Dog {
    constructor(public name: string) { }

    public bark() {
        console.log('Woof, woof!');
    }
}

var result: any;

var any: any;

interface TResult {
    a: number;
    b: string;
    c: boolean;
}

// _.MapCache
var testMapCache: _.MapCache;
result = <(key: string) => boolean>testMapCache.delete;
result = <(key: string) => any>testMapCache.get;
result = <(key: string) => boolean>testMapCache.has;
result = <(key: string, value: any) => _.Dictionary<any>>testMapCache.set;

/*************
 * Chaining *
 *************/
result = <_.LoDashWrapper<string>>_('test');
result = <_.LoDashWrapper<number>>_(1);
result = <_.LoDashWrapper<boolean>>_(true);
result = <_.LoDashArrayWrapper<string>>_(['test1', 'test2']);
// Appears to be a change in the compiler, if the type explicity implements the object indexer.
// Looking at: https://typescript.codeplex.com/wikipage?title=Known%20breaking%20changes%20between%200.8%20and%200.9&referringTitle=Documentation
// "The ‘noimplicitany’ option now warns on the use of the hidden default indexer"
result = <_.LoDashObjectWrapper<_.Dictionary<string>>>_(<{ [index: string]: string; }>{ 'key1': 'test1', 'key2': 'test2' });

result = <_.LoDashWrapper<string>>_.chain('test');
result = <_.LoDashWrapper<string>>_('test').chain();
result = <_.LoDashWrapper<number>>_.chain(1);
result = <_.LoDashWrapper<number>>_(1).chain();
result = <_.LoDashWrapper<boolean>>_.chain(true);
result = <_.LoDashWrapper<boolean>>_(true).chain();
result = <_.LoDashArrayWrapper<string>>_.chain(['test1', 'test2']);
result = <_.LoDashArrayWrapper<string>>_(['test1', 'test2']).chain();
result = <_.LoDashObjectWrapper<_.Dictionary<string>>>_.chain(<{ [index: string]: string; }>{ 'key1': 'test1', 'key2': 'test2' });
result = <_.LoDashObjectWrapper<_.Dictionary<string>>>_(<{ [index: string]: string; }>{ 'key1': 'test1', 'key2': 'test2' }).chain();

//Wrapped array shortcut methods
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4]).concat(5, 6);
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4]).concat([5, 6]);
result = <string>_([1, 2, 3, 4]).join(',');
result = <number>_([1, 2, 3, 4]).pop();
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4]).push(5, 6, 7);
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4]).reverse();
result = <number>_([1, 2, 3, 4]).shift();
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4]).slice(1, 2);
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4]).slice(2);
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4]).sort((a, b) => 1);
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4]).splice(1);
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4]).splice(1, 2, 5, 6);
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4]).unshift(5, 6);

result = <number[]>_.tap([1, 2, 3, 4], function (array) { console.log(array); });
result = <_.LoDashWrapper<string>>_('test').tap(function (value) { console.log(value); });
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4]).tap(function (array) { console.log(array); });
result = <_.LoDashObjectWrapper<_.Dictionary<string>>>_(<{ [index: string]: string; }>{ 'key1': 'test1', 'key2': 'test2' }).tap(function (array) { console.log(array); });

result = <string>_('test').toString();
result = <string>_([1, 2, 3]).toString();
result = <string>_({ 'key1': 'test1', 'key2': 'test2' }).toString();

// _.value (aliases: _.run, _.toJSON, _.valueOf)
result = <string>_('test').value();
result = <number[]>_([1, 2, 3]).run();
result = <_.Dictionary<string>>_(<{ [index: string]: string; }>{ 'key1': 'test1', 'key2': 'test2' }).toJSON();
result = <_.Dictionary<number>>_({ a: 1, b: 2}).mapValues(function(num: number) { return num * 2; }).valueOf();

// /*************
//  * Arrays *
//  *************/
result = <any[][]>_.chunk([1, '2', '3', false]);
result = <_.LoDashArrayWrapper<any[]>>_([1, '2', '3', false]).chunk();
result = <any[][]>_.chunk([1, '2', '3', false], 2);
result = <_.LoDashArrayWrapper<any[]>>_([1, '2', '3', false]).chunk(2);
result = <number[][]>_.chunk([1, 2, 3, 4]);
result = <_.LoDashArrayWrapper<number[]>>_([1, 2, 3, 4]).chunk();
result = <number[][]>_.chunk([1, 2, 3, 4], 2);
result = <_.LoDashArrayWrapper<number[]>>_([1, 2, 3, 4]).chunk(2);

result = <any[]>_.compact([0, 1, false, 2, '', 3]);
result = <_.LoDashArrayWrapper<any>>_([0, 1, false, 2, '', 3]).compact();

result = <number[]>_.difference([1, 2, 3, 4, 5], [5, 2, 10]);
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4, 5]).difference([5, 2, 10]);

result = <number[]>_.rest([1, 2, 3]);
result = <number[]>_.rest([1, 2, 3], 2);
result = <number[]>_.rest([1, 2, 3], (num) => num < 3)
result = <IFoodOrganic[]>_.rest(foodsOrganic, 'test');
result = <IFoodType[]>_.rest(foodsType, { 'type': 'value' });

result = <number[]>_.drop([1, 2, 3]);
result = <number[]>_.drop([1, 2, 3], 2);
result = <number[]>_.drop([1, 2, 3], (num) => num < 3)
result = <IFoodOrganic[]>_.drop(foodsOrganic, 'test');
result = <IFoodType[]>_.drop(foodsType, { 'type': 'value' });

result = <number[]>_.tail([1, 2, 3])
result = <number[]>_.tail([1, 2, 3], 2)
result = <number[]>_.tail([1, 2, 3], (num) => num < 3)
result = <IFoodOrganic[]>_.tail(foodsOrganic, 'test')
result = <IFoodType[]> _.tail(foodsType, { 'type': 'value' })

// _.fill
var testFillArray = [1, 2, 3];
var testFillList: _.List<number> = {0: 1, 1: 2, 2: 3, length: 3};

result = <string[]>_.fill<string>(testFillArray, 'a', 0, 3);
result = <_.List<string>>_.fill<string>(testFillList, 'a', 0, 3);
result = <number[]>_(testFillArray).fill<number>(0, 0, 3).value();
result = <_.List<number>>_(testFillList).fill<number>(0, 0, 3).value();


result = <number>_.findIndex(['apple', 'banana', 'beet'], function (f) {
    return /^b/.test(f);
});
result = <number>_.findIndex(['apple', 'banana', 'beet'], 'apple');
result = <number>_.findIndex([{ food: 'apple' }, { food: 'banana' }, { food: 'beet' }], { food: 'apple' });

result = <number>_.findLastIndex(['apple', 'banana', 'beet'], function (f: string) {
    return /^b/.test(f);
});
result = <number>_.findLastIndex(['apple', 'banana', 'beet'], 'apple');
result = <number>_.findLastIndex([{ food: 'apple' }, { food: 'banana' }, { food: 'beet' }], { food: 'apple' });

result = <number>_.first([1, 2, 3]);
result = <number[]>_.first([1, 2, 3], 2);
result = <number[]>_.first([1, 2, 3], function (num) {
    return num < 3;
});
result = <IFoodOrganic[]>_.first(foodsOrganic, 'organic');
result = <IFoodType[]>_.first(foodsType, { 'type': 'fruit' });

result = <number>_([1, 2, 3]).first();
result = <number[]>_([1, 2, 3]).first(2).value();
result = <number[]>_([1, 2, 3]).first(function (num) {
    return num < 3;
}).value();
result = <IFoodOrganic[]>_(foodsOrganic).first('organic').value();
result = <IFoodType[]>_(foodsType).first({ 'type': 'fruit' }).value();

result = <number>_.head([1, 2, 3]);
result = <number[]>_.head([1, 2, 3], 2);
result = <number[]>_.head([1, 2, 3], function (num) {
    return num < 3;
});
result = <IFoodOrganic[]>_.head(foodsOrganic, 'organic');
result = <IFoodType[]>_.head(foodsType, { 'type': 'fruit' });

result = <number>_([1, 2, 3]).head();
result = <number[]>_([1, 2, 3]).head(2).value();
result = <number[]>_([1, 2, 3]).head(function (num) {
    return num < 3;
}).value();
result = <IFoodOrganic[]>_(foodsOrganic).head('organic').value();
result = <IFoodType[]>_(foodsType).head({ 'type': 'fruit' }).value();

result = <number[]>_.take([1, 2, 3]);
result = <number[]>_.take([1, 2, 3], 2);
result = <number[]>_.takeWhile([1, 2, 3], (num) => num < 3);
result = <boolean[]>_.takeWhile(foodsOrganic, 'organic');
result = <IFoodType[]>_.takeWhile(foodsType, { 'type': 'fruit' });

result = <number[]>_([1, 2, 3]).take().value();
result = <number[]>_([1, 2, 3]).take(2).value();
result = <number[]>_([1, 2, 3]).takeWhile(function (num) {
    return num < 3;
}).value();
result = <boolean[]>_(foodsType).takeWhile('organic').value();
result = <IFoodType[]>_(foodsType).takeWhile({ 'type': 'fruit' }).value();

result = <Array<number>>_.flatten([[1, 2], [3, 4]]);
result = <Array<number>>_.flatten([[1, 2], [3, 4], 5, 6]);
result = <Array<number|Array<Array<number>>>>_.flatten([1, [2], [3, [[4]]]]);

result = <Array<number>>_.flatten([1, [2], [[3]]], true);
result = <Array<number>>_.flatten<number>([1, [2], [3, [[4]]]], true);
result = <Array<number|boolean>>_.flatten<number|boolean>([1, [2], [3, [[false]]]], true);

result = <Array<number>>_.flattenDeep<number>([[[[1]]]]);

result = <_.LoDashArrayWrapper<number>>_([[1, 2], [3, 4], 5, 6]).flatten();
result = <_.LoDashArrayWrapper<number|Array<Array<number>>>>_([1, [2], [3, [[4]]]]).flatten();

result = <_.LoDashArrayWrapper<number>>_([1, [2], [3, [[4]]]]).flatten(true);

result = <_.LoDashArrayWrapper<number>>_([1, [2], [3, [[4]]]]).flattenDeep();

result = <number>_.indexOf([1, 2, 3, 1, 2, 3], 2);
result = <number>_.indexOf([1, 2, 3, 1, 2, 3], 2, 3);
result = <number>_.indexOf([1, 1, 2, 2, 3, 3], 2, true);

result = <number[]>_.initial([1, 2, 3]);
result = <number[]>_.initial([1, 2, 3], 2);
result = <number[]>_.initial([1, 2, 3], function (num) {
    return num > 1;
});
result = <IFoodOrganic[]>_.initial(foodsOrganic, 'organic');
result = <IFoodType[]>_.initial(foodsType, { 'type': 'vegetable' });

result = <number[]>_.intersection([1, 2, 3], [101, 2, 1, 10], [2, 1]);

result = <number>_.last([1, 2, 3]);
result = <number>_([1, 2, 3]).last();

result = <number>_.lastIndexOf([1, 2, 3, 1, 2, 3], 2);
result = <number>_.lastIndexOf([1, 2, 3, 1, 2, 3], 2, 3);

result = <_.Dictionary<any>>_.zipObject(['moe', 'larry'], [30, 40]);
result = <_.LoDashObjectWrapper<_.Dictionary<any>>>_(['moe', 'larry']).zipObject([30, 40]);
result = <_.Dictionary<any>>_.object(['moe', 'larry'], [30, 40]);
result = <_.LoDashObjectWrapper<_.Dictionary<any>>>_(['moe', 'larry']).object([30, 40]);
result = <_.Dictionary<any>>_.zipObject([['moe', 30], ['larry', 40]]);
result = <_.LoDashObjectWrapper<_.Dictionary<any>>>_([['moe', 30], ['larry', 40]]).zipObject();
result = <_.Dictionary<any>>_.object([['moe', 30], ['larry', 40]]);
result = <_.LoDashObjectWrapper<_.Dictionary<any>>>_([['moe', 30], ['larry', 40]]).object();

result = <number[]>_.pull([1, 2, 3, 1, 2, 3], 2, 3);
result = <number[]>_.pullAt([1, 2, 3, 1, 2, 3], 2, 3);

result = <number[]>_.remove([1, 2, 3, 4, 5, 6], function (num: number) { return num % 2 == 0; });
result = <IFoodOrganic[]>_.remove(foodsOrganic, 'organic');
result = <IFoodType[]>_.remove(foodsType, { 'type': 'vegetable' });
var typedResult: IFoodType[] = _.remove([ <IFoodType>{ name: 'apple' }, <IFoodType>{ name: 'orange' }], <IFoodType>{ name: 'orange' });

result = <number>_.sortedIndex([20, 30, 50], 40);
result = <number>_.sortedIndex([{ 'x': 20 }, { 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x');
var sortedIndexDict: { wordToNumber: { [idx: string]: number } } = {
    'wordToNumber': { 'twenty': 20, 'thirty': 30, 'fourty': 40, 'fifty': 50 }
};
result = <number>_.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function (word: string) {
    return sortedIndexDict.wordToNumber[word];
});
result = <number>_.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function (word: string) {
    return this.wordToNumber[word];
}, sortedIndexDict);

result = <number[]>_.union([1, 2, 3], [101, 2, 1, 10], [2, 1]);

result = <number[]>_([1, 2, 3]).union([101, 2, 1, 10], [2, 1]).value();

result = <number[]>_.uniq([1, 2, 1, 3, 1]);
result = <number[]>_.uniq([1, 1, 2, 2, 3], true);
result = <string[]>_.uniq(['A', 'b', 'C', 'a', 'B', 'c'], function (letter) {
    return letter.toLowerCase();
});
result = <number[]>_.uniq([1, 2.5, 3, 1.5, 2, 3.5], function (num) { return this.floor(num); }, Math);
result = <{ x: number; }[]>_.uniq([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');

result = <number[]>_.unique([1, 2, 1, 3, 1]);
result = <number[]>_.unique([1, 1, 2, 2, 3], true);
result = <string[]>_.unique(['A', 'b', 'C', 'a', 'B', 'c'], function (letter) {
    return letter.toLowerCase();
});
result = <number[]>_.unique([1, 2.5, 3, 1.5, 2, 3.5], function (num) { return this.floor(num); }, Math);
result = <{ x: number; }[]>_.unique([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');

result = <number[]>_([1, 2, 1, 3, 1]).uniq().value();
result = <number[]>_([1, 1, 2, 2, 3]).uniq(true).value();
result = <string[]>_(['A', 'b', 'C', 'a', 'B', 'c']).uniq(function (letter) {
    return letter.toLowerCase();
}).value();
result = <number[]>_([1, 2.5, 3, 1.5, 2, 3.5]).uniq(function (num) { return this.floor(num); }, Math).value();
result = <{ x: number; }[]>_([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }]).uniq('x').value();

result = <number[]>_([1, 2, 1, 3, 1]).unique().value();
result = <number[]>_([1, 1, 2, 2, 3]).unique(true).value();
result = <string[]>_(['A', 'b', 'C', 'a', 'B', 'c']).unique(function (letter) {
    return letter.toLowerCase();
}).value();
result = <number[]>_([1, 2.5, 3, 1.5, 2, 3.5]).unique(function (num) { return this.floor(num); }, Math).value();
result = <{ x: number; }[]>_([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }]).unique('x').value();

result = <number[]>_.without([1, 2, 1, 0, 3, 1, 4], 0, 1);

// _.xor
var testXorArray: number[];
var testXorList: _.List<number>;
result = <number[]>_.xor<number>();
result = <number[]>_.xor<number>(testXorArray);
result = <number[]>_.xor<number>(testXorArray, testXorArray);
result = <number[]>_.xor<number>(testXorArray, testXorArray, testXorArray);
result = <number[]>_.xor<number>(testXorList);
result = <number[]>_.xor<number>(testXorList, testXorList);
result = <number[]>_.xor<number>(testXorList, testXorList, testXorList);
result = <number[]>(_(testXorArray).xor().value());
result = <number[]>(_(testXorArray).xor(testXorArray).value());
result = <number[]>(_(testXorArray).xor(testXorArray, testXorArray).value());
result = <number[]>(_(testXorList).xor().value());
result = <number[]>(_(testXorList).xor(testXorList).value());
result = <number[]>(_(testXorList).xor(testXorList, testXorList).value());

result = <any[][]>_.zip(['moe', 'larry'], [30, 40], [true, false]);
result = <any[][]>_.unzip(['moe', 'larry'], [30, 40], [true, false]);
result = <any[][]>_(['moe', 'larry']).zip([30, 40], [true, false]).value();
result = <any[][]>_(['moe', 'larry']).unzip([30, 40], [true, false]).value();

// _.zipWith
interface TestZipWithFn {
    (a1: number, a2: number): number;
}
var testZipWithFn: TestZipWithFn;
result = <number[]>_.zipWith<number>([1, 2]);
result = <number[]>_.zipWith<number>([1, 2], testZipWithFn);
result = <number[]>_.zipWith<number>([1, 2], testZipWithFn, any);
result = <number[]>_.zipWith<number>([1, 2], [1, 2], testZipWithFn, any);
result = <number[]>_.zipWith<number>([1, 2], [1, 2], [1, 2], [1, 2], [1, 2], [1, 2], testZipWithFn, any);
result = <number[]>_([1, 2]).zipWith<number>().value();
result = <number[]>_([1, 2]).zipWith<number>(testZipWithFn).value();
result = <number[]>_([1, 2]).zipWith<number>(testZipWithFn, any).value();
result = <number[]>_([1, 2]).zipWith<number>([1, 2], testZipWithFn, any).value();
result = <number[]>_([1, 2]).zipWith<number>([1, 2], [1, 2], [1, 2], [1, 2], [1, 2], testZipWithFn, any).value();

/*********
 * Chain *
 *********/

// _.thru
{
    let result: number;
    result = _.thru<number, number>(1, (value: number) => value);
    result = _.thru<number, number>(1, (value: number) => value, any);
}
{
    let result: _.LoDashWrapper<number>;
    result = _(1).thru<number>((value: number) => value);
    result = _(1).thru<number>((value: number) => value, any);
}
{
    let result: _.LoDashWrapper<string>;
    result = _('').thru<string>((value: string) => value);
    result = _('').thru<string>((value: string) => value, any);
}
{
    let result: _.LoDashWrapper<boolean>;
    result = _(true).thru<boolean>((value: boolean) => value);
    result = _(true).thru<boolean>((value: boolean) => value, any);
}
{
    let result: _.LoDashObjectWrapper<any>;
    result = _({}).thru<Object>((value: Object) => value);
    result = _({}).thru<Object>((value: Object) => value, any);
}
{
    let result: _.LoDashArrayWrapper<number>;
    result = _([1, 2, 3]).thru<number>((value: number[]) => value);
    result = _([1, 2, 3]).thru<number>((value: number[]) => value, any);
}

/**************
 * Collection *
 **************/

// _.at
{
    let testAtArray: TResult[];
    let testAtList: _.List<TResult>;
    let testAtDictionary: _.Dictionary<TResult>;
    let result: TResult[];
    result = _.at<TResult>(testAtArray, 0, '1', [2], ['3'], [4, '5']);
    result = _.at<TResult>(testAtList, 0, '1', [2], ['3'], [4, '5']);
    result = _.at<TResult>(testAtDictionary, 0, '1', [2], ['3'], [4, '5']);
    result = _(testAtArray).at(0, '1', [2], ['3'], [4, '5']).value();
    result = _(testAtList).at<TResult>(0, '1', [2], ['3'], [4, '5']).value();
    result = _(testAtDictionary).at<TResult>(0, '1', [2], ['3'], [4, '5']).value();
}

result = <boolean>_.contains([1, 2, 3], 1);
result = <boolean>_.contains([1, 2, 3], 1, 2);
result = <boolean>_.contains({ 'moe': 30, 'larry': 40, 'curly': 67 }, 40);
result = <boolean>_.contains('curly', 'ur');

result = <boolean>_([1, 2, 3]).contains(1);
result = <boolean>_([1, 2, 3]).contains(1, 2);
result = <boolean>_({ 'moe': 30, 'larry': 40, 'curly': 67 }).contains(40);
result = <boolean>_('curly').contains('ur');

result = <boolean>_.include([1, 2, 3], 1);
result = <boolean>_.include([1, 2, 3], 1, 2);
result = <boolean>_.include({ 'moe': 30, 'larry': 40, 'curly': 67 }, 40);
result = <boolean>_.include('curly', 'ur');

result = <boolean>_([1, 2, 3]).include(1);
result = <boolean>_([1, 2, 3]).include(1, 2);
result = <boolean>_({ 'moe': 30, 'larry': 40, 'curly': 67 }).include(40);
result = <boolean>_('curly').include('ur');

result = <boolean>_.includes([1, 2, 3], 1);
result = <boolean>_.includes([1, 2, 3], 1, 2);
result = <boolean>_.includes({ 'moe': 30, 'larry': 40, 'curly': 67 }, 40);
result = <boolean>_.includes('curly', 'ur');

result = <boolean>_([1, 2, 3]).includes(1);
result = <boolean>_([1, 2, 3]).includes(1, 2);
result = <boolean>_({ 'moe': 30, 'larry': 40, 'curly': 67 }).includes(40);
result = <boolean>_('curly').includes('ur');

result = <_.Dictionary<number>>_.countBy([4.3, 6.1, 6.4], function (num) { return Math.floor(num); });
result = <_.Dictionary<number>>_.countBy([4.3, 6.1, 6.4], function (num) { return this.floor(num); }, Math);
result = <_.Dictionary<number>>_.countBy(['one', 'two', 'three'], 'length');

result = <_.LoDashObjectWrapper<_.Dictionary<number>>>_([4.3, 6.1, 6.4]).countBy(function (num) { return Math.floor(num); });
result = <_.LoDashObjectWrapper<_.Dictionary<number>>>_([4.3, 6.1, 6.4]).countBy(function (num) { return this.floor(num); }, Math);
result = <_.LoDashObjectWrapper<_.Dictionary<number>>>_(['one', 'two', 'three']).countBy('length');

result = <boolean>_.every([true, 1, null, 'yes'], Boolean);
result = <boolean>_.every(stoogesAges, 'age');
result = <boolean>_.every(stoogesAges, { 'age': 50 });

result = <boolean>_.all([true, 1, null, 'yes'], Boolean);
result = <boolean>_.all(stoogesAges, 'age');
result = <boolean>_.all(stoogesAges, { 'age': 50 });

result = <number[]>_.filter([1, 2, 3, 4, 5, 6]);
result = <number[]>_.filter([1, 2, 3, 4, 5, 6], function (num) { return num % 2 == 0; });
result = <IFoodCombined[]>_.filter(foodsCombined, 'organic');
result = <IFoodCombined[]>_.filter(foodsCombined, { 'type': 'fruit' });

result = <number[]>_([1, 2, 3, 4, 5, 6]).filter(function (num) { return num % 2 == 0; }).value();
result = <IFoodCombined[]>_(foodsCombined).filter('organic').value();
result = <IFoodCombined[]>_(foodsCombined).filter({ 'type': 'fruit' }).value();

result = <number[]>_.select([1, 2, 3, 4, 5, 6], function (num) { return num % 2 == 0; });
result = <IFoodCombined[]>_.select(foodsCombined, 'organic');
result = <IFoodCombined[]>_.select(foodsCombined, { 'type': 'fruit' });

result = <number[]>_([1, 2, 3, 4, 5, 6]).select(function (num) { return num % 2 == 0; }).value();
result = <IFoodCombined[]>_(foodsCombined).select('organic').value();
result = <IFoodCombined[]>_(foodsCombined).select({ 'type': 'fruit' }).value();

result = <number>_.find([1, 2, 3, 4], num => num % 2 == 0);
result = <IFoodCombined>_.find(foodsCombined, { 'type': 'vegetable' });
result = <IFoodCombined>_.find(foodsCombined, 'type', 'vegetable');
result = <IFoodCombined>_.find(foodsCombined, 'organic');
result = <number>_([1, 2, 3, 4]).find(num => num % 2 == 0);
result = <IFoodCombined>_(foodsCombined).find({ 'type': 'vegetable' });
result = <IFoodCombined>_(foodsCombined).find('type', 'vegetable');
result = <IFoodCombined>_(foodsCombined).find('organic');

result = <number>_.detect([1, 2, 3, 4], function (num) {
    return num % 2 == 0;
});
result = <IFoodCombined>_.detect(foodsCombined, { 'type': 'vegetable' });
result = <IFoodCombined>_.detect(foodsCombined, 'organic');

result = <number>_.findWhere([1, 2, 3, 4], function (num) {
    return num % 2 == 0;
});
result = <IFoodCombined>_.findWhere(foodsCombined, { 'type': 'vegetable' });
result = <IFoodCombined>_.findWhere(foodsCombined, 'organic');

result = <number>_.findLast([1, 2, 3, 4], function (num) {
    return num % 2 == 0;
});
result = <IFoodCombined>_.findLast(foodsCombined, { 'type': 'vegetable' });
result = <IFoodCombined>_.findLast(foodsCombined, 'organic');

result = <number>_([1, 2, 3, 4]).findLast(function (num) {
    return num % 2 == 0;
});
result = <IFoodCombined>_(foodsCombined).findLast({ 'type': 'vegetable' });
result = <IFoodCombined>_(foodsCombined).findLast('organic');

result = <number[]>_.forEach([1, 2, 3], function (num) { console.log(num); });
result = <_.Dictionary<number>>_.forEach({ 'one': 1, 'two': 2, 'three': 3 }, function (num) { console.log(num); });
result = <IFoodType>_.forEach<IFoodType, string>({ name: 'apple', type: 'fruit' }, function (value, key) { console.log(value, key) });

result = <number[]>_.each([1, 2, 3], function (num) { console.log(num); });
result = <_.Dictionary<number>>_.each({ 'one': 1, 'two': 2, 'three': 3 }, function (num) { console.log(num); });
result = <IFoodType>_.each<IFoodType, string>({ name: 'apple', type: 'fruit' }, function (value, key) { console.log(value, key) });

result = <_.LoDashArrayWrapper<number>>_([1, 2, 3]).forEach(function (num) { console.log(num); });
result = <_.LoDashObjectWrapper<_.Dictionary<number>>>_(<{ [index: string]: number; }>{ 'one': 1, 'two': 2, 'three': 3 }).forEach(function (num) { console.log(num); });

result = <_.LoDashArrayWrapper<number>>_([1, 2, 3]).each(function (num) { console.log(num); });
result = <_.LoDashObjectWrapper<_.Dictionary<number>>>_(<{ [index: string]: number; }>{ 'one': 1, 'two': 2, 'three': 3 }).each(function (num) { console.log(num); });

result = <number[]>_.forEachRight([1, 2, 3], function (num) { console.log(num); });
result = <_.Dictionary<number>>_.forEachRight({ 'one': 1, 'two': 2, 'three': 3 }, function (num) { console.log(num); });

result = <number[]>_.eachRight([1, 2, 3], function (num) { console.log(num); });
result = <_.Dictionary<number>>_.eachRight({ 'one': 1, 'two': 2, 'three': 3 }, function (num) { console.log(num); });

result = <_.LoDashArrayWrapper<number>>_([1, 2, 3]).forEachRight(function (num) { console.log(num); });
result = <_.LoDashObjectWrapper<_.Dictionary<number>>>_(<{ [index: string]: number; }>{ 'one': 1, 'two': 2, 'three': 3 }).forEachRight(function (num) { console.log(num); });

result = <_.LoDashArrayWrapper<number>>_([1, 2, 3]).eachRight(function (num) { console.log(num); });
result = <_.LoDashObjectWrapper<_.Dictionary<number>>>_(<{ [index: string]: number; }>{ 'one': 1, 'two': 2, 'three': 3 }).eachRight(function (num) { console.log(num); });

result = <_.Dictionary<number[]>>_.groupBy([4.2, 6.1, 6.4], function (num) { return Math.floor(num); });
result = <_.Dictionary<number[]>>_.groupBy([4.2, 6.1, 6.4], function (num) { return this.floor(num); }, Math);
result = <_.Dictionary<string[]>>_.groupBy(['one', 'two', 'three'], 'length');

result = <_.Dictionary<number[]>>_.groupBy({ prop1: 4.2, prop2: 6.1, prop3: 6.4}, function (num) { return Math.floor(num); });
result = <_.Dictionary<number[]>>_.groupBy({ prop1: 4.2, prop2: 6.1, prop3: 6.4}, function (num) { return this.floor(num); }, Math);
result = <_.Dictionary<string[]>>_.groupBy({ prop1: 'one', prop2: 'two', prop3: 'three'}, 'length');

result = <_.Dictionary<number[]>>_([4.2, 6.1, 6.4]).groupBy(function (num) { return Math.floor(num); }).value();
result = <_.Dictionary<number[]>>_([4.2, 6.1, 6.4]).groupBy(function (num) { return this.floor(num); }, Math).value();
result = <_.Dictionary<string[]>>_(['one', 'two', 'three']).groupBy('length').value();

result = <_.Dictionary<number[]>>_({ prop1: 4.2, prop2: 6.1, prop3: 6.4}).groupBy<number>(function (num) { return Math.floor(num); }).value();
result = <_.Dictionary<number[]>>_({ prop1: 4.2, prop2: 6.1, prop3: 6.4}).groupBy<number>(function (num) { return this.floor(num); }, Math).value();
result = <_.Dictionary<string[]>>_({ prop1: 'one', prop2: 'two', prop3: 'three'}).groupBy<string>('length').value();

result = <_.Dictionary<IKey>>_.indexBy(keys, 'dir');
result = <_.Dictionary<IKey>>_.indexBy(keys, function (key) { return String.fromCharCode(key.code); });
result = <_.Dictionary<IKey>>_.indexBy(keys, function (key) { this.fromCharCode(key.code); }, String);

result = <number[][]>_.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
result = <string[][]>_.invoke([123, 456], String.prototype.split, '');

result = <number[]>_.map([1, 2, 3], function (num) { return num * 3; });
result = <number[]>_.map({ 'one': 1, 'two': 2, 'three': 3 }, function (num) { return num * 3; });
result = <IStoogesAge[]>_.map(stoogesAges, 'name');

result = <number[]>_([1, 2, 3]).map(function (num) { return num * 3; }).value();
result = <number[]>_({ 'one': 1, 'two': 2, 'three': 3 }).map(function (num: number) { return num * 3; }).value();
result = <IStoogesAge[]>_(stoogesAges).map('name').value();

result = <number[]>_.collect([1, 2, 3], function (num) { return num * 3; });
result = <number[]>_.collect({ 'one': 1, 'two': 2, 'three': 3 }, function (num) { return num * 3; });
result = <IStoogesAge[]>_.collect(stoogesAges, 'name');

result = <number[]>_([1, 2, 3]).collect(function (num) { return num * 3; }).value();
result = <number[]>_({ 'one': 1, 'two': 2, 'three': 3 }).collect(function (num: number) { return num * 3; }).value();
result = <IStoogesAge[]>_(stoogesAges).collect('name').value();

// _.ceil
result = <number>_.ceil(4.006);
// → 5
result = <number>_.ceil(6.004, 2);
// → 6.01
result = <number>_.ceil(6040, -2);
// → 6100
result = <number>_(4.006).ceil();
// → 5
result = <number>_(6.004).ceil(2);
// → 6.01
result = <number>_(6040).ceil(-2);
// → 6100

// _.floor
result = <number>_.floor(4.006);
// → 4
result = <number>_.floor(0.046, 2);
// → 0.04
result = <number>_.floor(4060, -2);
// → 4000
result = <number>_(4.006).floor();
// → 4
result = <number>_(0.046).floor(2);
// → 0.04
result = <number>_(4060).floor(-2);
// → 4000

result = <number>_.max([4, 2, 8, 6]);
result = <IStoogesAge>_.max(stoogesAges, function (stooge) { return stooge.age; });
result = <IStoogesAge>_.max(stoogesAges, 'age');
result = <_.LoDashWrapper<number>>_([4, 2, 8, 6]).max();
result = <_.LoDashWrapper<IStoogesAge>>_(stoogesAges).max(function (stooge) { return stooge.age; });
result = <_.LoDashWrapper<IStoogesAge>>_(stoogesAges).max('age');

result = <number>_.min([4, 2, 8, 6]);
result = <IStoogesAge>_.min(stoogesAges, function (stooge) { return stooge.age; });
result = <IStoogesAge>_.min(stoogesAges, 'age');
result = <_.LoDashWrapper<number>>_([4, 2, 8, 6]).min();
result = <_.LoDashWrapper<IStoogesAge>>_(stoogesAges).min(function (stooge) { return stooge.age; });
result = <_.LoDashWrapper<IStoogesAge>>_(stoogesAges).min('age');

// _.round
result = <number>_.round(4.006);
// → 4
result = <number>_.round(4.006, 2);
// → 4.01
result = <number>_.round(4060, -2);
// → 4100
result = <number>_(4.006).round();
// → 4
result = <number>_(4.006).round(2);
// → 4.01
result = <number>_(4060).round(-2);
// → 4100

result = <number>_.sum([4, 2, 8, 6]);
result = <number>_.sum([4, 2, 8, 6], function(v) { return v; });
result = <number>_.sum({a: 2, b: 4});
result = <number>_.sum({a: 2, b: 4}, function(v) { return v; });
result = <number>_.sum(stoogesAges, function (stooge) { return stooge.age; });
result = <number>_.sum(stoogesAges, 'age');
result = <number>_.sum(stoogesAgesDict, function(stooge) { return stooge.age; });
result = <number>_.sum(stoogesAgesDict, 'age');
result = <number>_([4, 2, 8, 6]).sum();
result = <number>_([4, 2, 8, 6]).sum(function(v) { return v; });
result = <number>_({a: 2, b: 4}).sum();
result = <number>_({a: 2, b: 4}).sum(function(v) { return v; });
result = <number>_(stoogesAges).sum(function (stooge) { return stooge.age; });
result = <number>_(stoogesAges).sum('age');
result = <number>_(stoogesAgesDict).sum(function (stooge) { return stooge.age; });
result = <number>_(stoogesAgesDict).sum('age');

result = <string[]>_.pluck(stoogesAges, 'name');
result = <string[]>_(stoogesAges).pluck('name').value();
result = <string[]>_.pluck(stoogesAges, ['name']);

// _.partition
result = <string[][]>_.partition<string>('abcd', (n) => n < 'c');
result = <string[][]>_.partition<string>(['a', 'b', 'c', 'd'], (n) => n < 'c');
result = <number[][]>_.partition<number>([1, 2, 3, 4], (n) => n < 3);
result = <number[][]>_.partition<number>({0: 1, 1: 2, 2: 3, 3: 4, length: 4}, (n) => n < 3);
result = <number[][]>_.partition<number>({a: 1, b: 2, c: 3, d: 4}, (n) => n < 3);
result = <{a: number}[][]>_.partition<{a: number}, {a: number}>([{a: 1}, {a: 2}], {a: 2});
result = <{a: number}[][]>_.partition<{a: number}, {a: number}>({0: {a: 1}, 1: {a: 2}, length: 2}, {a: 2});
result = <{a: number}[][]>_.partition<{a: number}, {a: number}>({0: {a: 1}, 1: {a: 2}}, {a: 2});
result = <{a: number}[][]>_.partition<{a: number}>([{a: 1}, {a: 2}], 'a');
result = <{a: number}[][]>_.partition<{a: number}>([{a: 1}, {a: 2}], 'a', 2);
result = <{a: number}[][]>_.partition<{a: number}>({0: {a: 1}, 1: {a: 2}, length: 2}, 'a');
result = <{a: number}[][]>_.partition<{a: number}>({0: {a: 1}, 1: {a: 2}, length: 2}, 'a', 2);
result = <{a: number}[][]>_.partition<{a: number}>({0: {a: 1}, 1: {a: 2}}, 'a');
result = <{a: number}[][]>_.partition<{a: number}>({0: {a: 1}, 1: {a: 2}}, 'a', 2);
result = <string[][]>_('abcd').partition((n) => n < 'c').value();
result = <string[][]>_(['a', 'b', 'c', 'd']).partition((n) => n < 'c').value();
result = <number[][]>_([1, 2, 3, 4]).partition((n) => n < 3).value();
result = <number[][]>_({0: 1, 1: 2, 2: 3, 3: 4, length: 4}).partition<number>((n) => n < 3).value();
result = <number[][]>_({a: 1, b: 2, c: 3, d: 4}).partition<number>((n) => n < 3).value();
result = <{a: number}[][]>_([{a: 1}, {a: 2}]).partition<{a: number}>({a: 2}).value();
result = <{a: number}[][]>_({0: {a: 1}, 1: {a: 2}, length: 2}).partition<{a: number}, {a: number}>({a: 2}).value();
result = <{a: number}[][]>_({0: {a: 1}, 1: {a: 2}}).partition<{a: number}, {a: number}>({a: 2}).value();
result = <{a: number}[][]>_([{a: 1}, {a: 2}]).partition('a').value();
result = <{a: number}[][]>_([{a: 1}, {a: 2}]).partition('a', 2).value();
result = <{a: number}[][]>_({0: {a: 1}, 1: {a: 2}}).partition<{a: number}>('a').value();
result = <{a: number}[][]>_({0: {a: 1}, 1: {a: 2}}).partition<{a: number}>('a', 2).value();

interface ABC {
    [index: string]: number;
    a: number;
    b: number;
    c: number;
}

result = <number>_.reduce<number, number>([1, 2, 3], function (sum: number, num: number) {
    return sum + num;
});
result = <ABC>_.reduce({ 'a': 1, 'b': 2, 'c': 3 }, function (r: ABC, num: number, key: string) {
    r[key] = num * 3;
    return r;
}, {});

result = <number>_.foldl([1, 2, 3], function (sum: number, num: number) {
    return sum + num;
});
result = <ABC>_.foldl({ 'a': 1, 'b': 2, 'c': 3 }, function (r: ABC, num: number, key: string) {
    r[key] = num * 3;
    return r;
}, {});

result = <number>_.inject([1, 2, 3], function (sum: number, num: number) {
    return sum + num;
});
result = <ABC>_.inject({ 'a': 1, 'b': 2, 'c': 3 }, function (r: ABC, num: number, key: string) {
    r[key] = num * 3;
    return r;
}, {});

result = <number>_([1, 2, 3]).reduce<number>(function (sum: number, num: number) {
    return sum + num;
});
result = <ABC>_({ 'a': 1, 'b': 2, 'c': 3 }).reduce<number, ABC>(function (r: ABC, num: number, key: string) {
    r[key] = num * 3;
    return r;
}, {});

result = <number>_([1, 2, 3]).foldl<number>(function (sum: number, num: number) {
    return sum + num;
});
result = <ABC>_({ 'a': 1, 'b': 2, 'c': 3 }).foldl<number, ABC>(function (r: ABC, num: number, key: string) {
    r[key] = num * 3;
    return r;
}, {});

result = <number>_([1, 2, 3]).inject<number>(function (sum: number, num: number) {
    return sum + num;
});
result = <ABC>_({ 'a': 1, 'b': 2, 'c': 3 }).inject<number, ABC>(function (r: ABC, num: number, key: string) {
    r[key] = num * 3;
    return r;
}, {});

result = <number[]>_.reduceRight([[0, 1], [2, 3], [4, 5]], function (a: number[], b: number[]) { return a.concat(b); }, <number[]>[]);
result = <number[]>_.foldr([[0, 1], [2, 3], [4, 5]], function (a: number[], b: number[]) { return a.concat(b); }, <number[]>[]);

result = <number[]>_.reject([1, 2, 3, 4, 5, 6], function (num) { return num % 2 == 0; });
result = <IFoodCombined[]>_.reject(foodsCombined, 'organic');
result = <IFoodCombined[]>_.reject(foodsCombined, { 'type': 'fruit' });

result = <number[]>_([1, 2, 3, 4, 5, 6]).reject(function (num) { return num % 2 == 0; }).value();
result = <IFoodCombined[]>_(foodsCombined).reject('organic').value();
result = <IFoodCombined[]>_(foodsCombined).reject({ 'type': 'fruit' }).value();

result = <number>_.sample([1, 2, 3, 4]);
result = <number[]>_.sample([1, 2, 3, 4], 2);
result = <_.LoDashWrapper<number>>_([1, 2, 3, 4]).sample();
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3, 4]).sample(2);
result = <number>_([1, 2, 3, 4]).sample().value();
result = <number[]>_([1, 2, 3, 4]).sample(2).value();

result = <number[]>_.shuffle([1, 2, 3, 4, 5, 6]);
result = <_.LoDashArrayWrapper<number>>_([1, 2, 3]).shuffle();
result = <_.LoDashArrayWrapper<_.Dictionary<string>>>_(<{ [index: string]: string; }>{ 'key1': 'test1', 'key2': 'test2' }).shuffle();

result = <number>_.size([1, 2]);
result = <number>_([1, 2]).size();
result = <number>_.size({ 'one': 1, 'two': 2, 'three': 3 });
result = <number>_({ 'one': 1, 'two': 2, 'three': 3 }).size();
result = <number>_.size('curly');

result = <boolean>_.some([null, 0, 'yes', false], Boolean);
result = <boolean>_.some(foodsCombined, 'organic');
result = <boolean>_.some(foodsCombined, { 'type': 'meat' });
result = <boolean>_.some(foodsOrganic[0]);

result = <boolean>_.any([null, 0, 'yes', false], Boolean);
result = <boolean>_.any(foodsCombined, 'organic');
result = <boolean>_.any(foodsCombined, { 'type': 'meat' });
result = <boolean>_.any(foodsOrganic[0]);

result = <number[]>_.sortBy([1, 2, 3], function (num) { return Math.sin(num); });
result = <number[]>_.sortBy([1, 2, 3], function (num) { return this.sin(num); }, Math);
result = <string[]>_.sortBy(['banana', 'strawberry', 'apple'], 'length');

result = <IStoogesAge[]>_.sortByAll(stoogesAges, function(stooge) { return Math.sin(stooge.age); }, function(stooge) { return stooge.name.slice(1); });
result = <IStoogesAge[]>_.sortByAll(stoogesAges, ['name', 'age']);
result = <IStoogesAge[]>_.sortByAll(stoogesAges, 'name', function(stooge) { return Math.sin(stooge.age); });

result = <IStoogesAge[]>_.sortByOrder(stoogesAges, [function(stooge) { return Math.sin(stooge.age); }, function(stooge) { return stooge.name.slice(1); }]);
result = <IStoogesAge[]>_.sortByOrder(stoogesAges, ['name', 'age']);
result = <IStoogesAge[]>_.sortByOrder(stoogesAges, ['name', function(stooge) { return Math.sin(stooge.age); }]);
result = <IStoogesAge[]>_.sortByOrder(stoogesAges, [function(stooge) { return Math.sin(stooge.age); }, function(stooge) { return stooge.name.slice(1); }], ['asc', 'desc']);
result = <IStoogesAge[]>_.sortByOrder(stoogesAges, ['name', 'age'], ['asc', 'desc']);
result = <IStoogesAge[]>_.sortByOrder(stoogesAges, ['name', function(stooge) { return Math.sin(stooge.age); }], ['asc', 'desc']);
result = <IStoogesAge[]>_.sortByOrder(stoogesAges, [function(stooge) { return Math.sin(stooge.age); }, function(stooge) { return stooge.name.slice(1); }], [true, false]);
result = <IStoogesAge[]>_.sortByOrder(stoogesAges, ['name', 'age'], [true, false]);
result = <IStoogesAge[]>_.sortByOrder(stoogesAges, ['name', function(stooge) { return Math.sin(stooge.age); }], [true, false]);

result = <number[]>_([1, 2, 3]).sortBy(function (num) { return Math.sin(num); }).value();
result = <number[]>_([1, 2, 3]).sortBy(function (num) { return this.sin(num); }, Math).value();
result = <string[]>_(['banana', 'strawberry', 'apple']).sortBy('length').value();
result = <IFoodOrganic[]>_(foodsOrganic).sortByAll('organic', (food) => food.name, { organic: true }).value();

(function (a: number, b: number, c: number, d: number): Array<number> { return _.toArray(arguments).slice(1); })(1, 2, 3, 4);
result = <number[]>_.toArray([1, 2, 3, 4]);
(function (a: number, b: number, c: number, d: number): Array<number> { return _(arguments).toArray<number>().slice(1).value(); })(1, 2, 3, 4);
result = <number[]>_([1,2,3,4]).toArray().value();


result = <IStoogesCombined[]>_.where(stoogesCombined, { 'age': 40 });
result = <IStoogesCombined[]>_.where(stoogesCombined, { 'quotes': ['Poifect!'] });

result = <IStoogesCombined[]>_(stoogesCombined).where({ 'age': 40 }).value();
result = <IStoogesCombined[]>_(stoogesCombined).where({ 'quotes': ['Poifect!'] }).value();

/********
 * Date *
 ********/

result = <number>_.now();

/*************
 * Functions *
 *************/
var saves = ['profile', 'settings'];
var asyncSave = (obj: any) => obj.done();
var done: Function;

done = _.after(saves.length, function () {
    console.log('Done saving!');
});

_.forEach(saves, function (type) {
    asyncSave({ 'type': type, 'complete': done });
});

done = _(saves.length).after(function () {
    console.log('Done saving!');
}).value();

_.forEach(saves, function (type) {
    asyncSave({ 'type': type, 'complete': done });
});

// _.ary
result = <number[]>['6', '8', '10'].map(_.ary<(s: string) => number>(parseInt, 1));
result = <number[]>['6', '8', '10'].map(_(parseInt).ary<(s: string) => number>(1).value());

// _.backflow
var testBackflowSquareFn = (n: number) => n * n;
var testBackflowAddFn = (n: number, m: number) => n + m;
result = <number>_.backflow<(n: number, m: number) => number>(testBackflowSquareFn, testBackflowAddFn)(1, 2);
result = <number>_(testBackflowSquareFn).backflow<(n: number, m: number) => number>(testBackflowAddFn).value()(1, 2);

// _.before
var testBeforeFn = ((n: number) => () => ++n)(0);
var testBeforeResultFn = <() => number>_.before<() => number>(3, testBeforeFn);
result = <number>testBeforeResultFn();
// → 1
result = <number>testBeforeResultFn();
// → 2
result = <number>testBeforeResultFn();
// → 2
var testBeforeFn = ((n: number) => () => ++n)(0);
var testBeforeResultFn = <() => number>_(3).before<() => number>(testBeforeFn);
result = <number>testBeforeResultFn();
// → 1
result = <number>testBeforeResultFn();
// → 2
result = <number>testBeforeResultFn();
// → 2

var funcBind = function(greeting: string, punctuation: string) { return greeting + ' ' + this.user + punctuation; };
var funcBound1: (punctuation: string) => any = _.bind(funcBind, { 'name': 'moe' }, 'hi');
funcBound1('!');

var funcBound2: (punctuation: string) => any = _(funcBind).bind({ 'name': 'moe' }, 'hi').value();
funcBound2('!');

var addTwoNumbers = function (x: number, y: number) { return x + y };
var plusTwo = _.bind(addTwoNumbers, null, 2);
plusTwo(100);

var view = {
    'label': 'docs',
    'onClick': function () { console.log('clicked ' + this.label); }
};

view = _.bindAll(view);
jQuery('#docs').on('click', view.onClick);

view = _(view).bindAll().value();
jQuery('#docs').on('click', view.onClick);

var objectBindKey = {
    'name': 'moe',
    'greet': function (greeting: string) {
        return greeting + ' ' + this.name;
    }
};

var funcBindKey: Function = _.bindKey(objectBindKey, 'greet', 'hi');
funcBindKey();

objectBindKey.greet = function (greeting) {
    return greeting + ', ' + this.name + '!';
};

funcBindKey();

funcBindKey = _(objectBindKey).bindKey('greet', 'hi').value();
funcBindKey();

// _.compose
var testComposeSquareFn = (n: number) => n * n;
var testComposeAddFn = (n: number, m: number) => n + m;
result = <number>_.compose<(n: number, m: number) => number>(testComposeSquareFn, testComposeAddFn)(1, 2);
result = <number>_(testComposeSquareFn).compose<(n: number, m: number) => number>(testComposeAddFn).value()(1, 2);

var createCallbackObj: { [index: string]: string; } = { name: 'Joe' };
result = <() => any>_.createCallback('name');
result = <() => boolean>_.createCallback(createCallbackObj);
result = <_.LoDashObjectWrapper<() => any>>_('name').createCallback();
result = <_.LoDashObjectWrapper<() => boolean>>_(createCallbackObj).createCallback();

// _.curry
var testCurryFn = (a: number, b: number, c: number) => [a, b, c];
interface TestCurryResultFn {
    (...args: number[]): number[] | TestCurryResultFn;
}
result = <number[]>_.curry<TestCurryResultFn>(testCurryFn)(1, 2, 3);
result = <TestCurryResultFn>_.curry<TestCurryResultFn>(testCurryFn)(1);
result = <number[]>_(testCurryFn).curry<TestCurryResultFn>().value()(1, 2, 3);
result = <TestCurryResultFn>_(testCurryFn).curry<TestCurryResultFn>().value()(1);

// _.curryRight
var testCurryRightFn = (a: number, b: number, c: number) => [a, b, c];
interface TestCurryRightResultFn {
    (...args: number[]): number[] | TestCurryRightResultFn;
}
result = <number[]>_.curryRight<TestCurryRightResultFn>(testCurryRightFn)(1, 2, 3);
result = <TestCurryRightResultFn>_.curryRight<TestCurryRightResultFn>(testCurryRightFn)(1);
result = <number[]>_(testCurryRightFn).curryRight<TestCurryRightResultFn>().value()(1, 2, 3);
result = <TestCurryRightResultFn>_(testCurryRightFn).curryRight<TestCurryRightResultFn>().value()(1);

declare var source: any;
result = <Function>_.debounce(function () { }, 150);

jQuery('#postbox').on('click', <Function>_.debounce(function () { }, 300, {
    'leading': true,
    'trailing': false
}));

source.addEventListener('message', <Function>_.debounce(function () { }, 250, {
    'maxWait': 1000
}), false);

result = <_.LoDashObjectWrapper<Function>>_(function () { }).debounce(150);

jQuery('#postbox').on('click', <_.LoDashObjectWrapper<Function>>_(function () { }).debounce(300, {
    'leading': true,
    'trailing': false
}));

source.addEventListener('message', <_.LoDashObjectWrapper<Function>>_(function () { }).debounce(250, {
    'maxWait': 1000
}), false);

var returnedDebounce = _.throttle(function (a: any) { return a * 5; }, 5);
returnedThrottled(4);

result = <number>_.defer(function () { console.log('deferred'); });
result = <_.LoDashWrapper<number>>_(function () { console.log('deferred'); }).defer();

var log = _.bind(console.log, console);
result = <number>_.delay(log, 1000, 'logged later');
result = <_.LoDashWrapper<number>>_(log).delay(1000, 'logged later');

// _.flow
var testFlowSquareFn = (n: number) => n * n;
var testFlowAddFn = (n: number, m: number) => n + m;
result = <number>_.flow<(n: number, m: number) => number>(testFlowAddFn, testFlowSquareFn)(1, 2);
result = <number>_(testFlowAddFn).flow<(n: number, m: number) => number>(testFlowSquareFn).value()(1, 2);

// _.flowRight
var testFlowRightSquareFn = (n: number) => n * n;
var testFlowRightAddFn = (n: number, m: number) => n + m;
result = <number>_.flowRight<(n: number, m: number) => number>(testFlowRightSquareFn, testFlowRightAddFn)(1, 2);
result = <number>_(testFlowRightSquareFn).flowRight<(n: number, m: number) => number>(testFlowRightAddFn).value()(1, 2);

// _.memoize
var testMemoizedFunction: _.MemoizedFunction;
result = <_.MapCache>testMemoizedFunction.cache;
interface TestMemoizedResultFn extends _.MemoizedFunction {
    (...args: any[]): any;
}
var testMemoizeFn: (...args: any[]) => any;
var testMemoizeResolverFn: (...args: any[]) => any;
result = <TestMemoizedResultFn>_.memoize<TestMemoizedResultFn>(testMemoizeFn);
result = <TestMemoizedResultFn>_.memoize<TestMemoizedResultFn>(testMemoizeFn, testMemoizeResolverFn);
result = <TestMemoizedResultFn>(_(testMemoizeFn).memoize<TestMemoizedResultFn>().value());
result = <TestMemoizedResultFn>(_(testMemoizeFn).memoize<TestMemoizedResultFn>(testMemoizeResolverFn).value());

var returnedMemoize = _.throttle(function (a: any) { return a * 5; }, 5);
returnedMemoize(4);

// _.modArgs
function modArgsFn1(n: number): string {return n.toString()}
function modArgsFn2(n: boolean): string {return n.toString()}
interface ModArgsFunc {
    (x: string, y: string): string[];
}
interface ModArgsResult {
    (x: number, y: boolean): string[]
}
result = <ModArgsResult>_.modArgs<ModArgsFunc, ModArgsResult>((x: string, y: string) => [x, y], modArgsFn1, modArgsFn2);
result = <string[]>result(1, true);

result = <ModArgsResult>_.modArgs<ModArgsFunc, ModArgsResult>((x: string, y: string) => [x, y], [modArgsFn1, modArgsFn2]);
result = <string[]>result(1, true);

result = <ModArgsResult>_<ModArgsFunc>((x: string, y: string) => [x, y]).modArgs<ModArgsResult>(modArgsFn1, modArgsFn2).value();
result = <string[]>result(1, true);

result = <ModArgsResult>_<ModArgsFunc>((x: string, y: string) => [x, y]).modArgs<ModArgsResult>([modArgsFn1, modArgsFn2]).value();
result = <string[]>result(1, true);

// _.negate
interface TestNegatePredicate {
    (a1: number, a2: number): boolean;
}
interface TestNegateResult {
    (a1: number, a2: number): boolean;
}
var testNegatePredicate = (a1: number, a2: number) => a1 > a2;
result = <TestNegateResult>_.negate<TestNegatePredicate>(testNegatePredicate);
result = <TestNegateResult>_.negate<TestNegatePredicate, TestNegateResult>(testNegatePredicate);
result = <TestNegateResult>_(testNegatePredicate).negate().value();
result = <TestNegateResult>_(testNegatePredicate).negate<TestNegateResult>().value();

// _.once
result = <() => void>_.once<() => void>(function () {});
result = <() => void>(_(function () {}).once().value());

var returnedOnce = _.throttle(function (a: any) { return a * 5; }, 5);
returnedOnce(4);

var greetPartial = function (greeting: string, name: string) { return greeting + ' ' + name; };
var hi = <Function>_.partial(greetPartial, 'hi');
hi('moe');

var defaultsDeep = <Function>_.partialRight(_.merge, _.defaults);

var optionsPartialRight = {
    'variable': 'data',
    'imports': { 'jq': $ }
};

defaultsDeep(optionsPartialRight, _.templateSettings);

//_.rearg
var testReargFn = (a: string, b: string, c: string) => [a, b, c];
interface TestReargResultFn {
    (b: string, c: string, a: string): string[];
}
result = <string[]>(_.rearg<TestReargResultFn>(testReargFn, 2, 0, 1))('b', 'c', 'a');
result = <string[]>(_.rearg<TestReargResultFn>(testReargFn, [2, 0, 1]))('b', 'c', 'a');
result = <string[]>(_(testReargFn).rearg<TestReargResultFn>(2, 0, 1).value())('b', 'c', 'a');
result = <string[]>(_(testReargFn).rearg<TestReargResultFn>([2, 0, 1]).value())('b', 'c', 'a');

//_.restParam
var testRestParamFn = (a: string, b: string, c: number[]) => a + ' ' + b + ' ' + c.join(' ');
interface testRestParamFunc {
    (a: string, b: string, c: number[]): string;
}
interface testRestParamResult {
    (a: string, b: string, ...c: number[]): string;
}
result = <string>(_.restParam<testRestParamResult, testRestParamFunc>(testRestParamFn, 2))('a', 'b', 1, 2, 3);
result = <string>(_.restParam<testRestParamResult>(testRestParamFn, 2))('a', 'b', 1, 2, 3);
result = <string>(_(testRestParamFn).restParam<testRestParamResult>(2).value())('a', 'b', 1, 2, 3);

//_.spread
var testSpreadFn = (who: string, what: string) => who + ' says ' + what;
interface TestSpreadResultFn {
    (args: string[]): string;
}
result = <string>(_.spread<TestSpreadResultFn>(testSpreadFn))(['fred', 'hello']);
result = <string>(_(testSpreadFn).spread<TestSpreadResultFn>().value())(['fred', 'hello']);

var throttled = _.throttle(function () { }, 100);
jQuery(window).on('scroll', throttled);

jQuery('.interactive').on('click', _.throttle(function () { }, 300000, {
    'trailing': false
}));

var returnedThrottled = _.throttle(function (a: any) { return a * 5; }, 5);
returnedThrottled(4);

var helloWrap = function (name: string) { return 'hello ' + name; };
var helloWrap2 = _.wrap(helloWrap, function (func) {
    return 'before, ' + func('moe') + ', after';
});
helloWrap2();

/********
 * Lang *
 ********/

// _.clone
interface TestCloneCustomizerFn {
    (value: any): any;
}
var testCloneCustomizerFn: TestCloneCustomizerFn;
{
    let result: number;
    result = _.clone<number>(42);
    result = _.clone<number>(42, false);
    result = _.clone<number>(42, false, testCloneCustomizerFn);
    result = _.clone<number>(42, false, testCloneCustomizerFn, any);
    result = _.clone<number>(42, testCloneCustomizerFn);
    result = _.clone<number>(42, testCloneCustomizerFn, any);
    result = _(42).clone();
    result = _(42).clone(false);
    result = _(42).clone(false, testCloneCustomizerFn);
    result = _(42).clone(false, testCloneCustomizerFn, any);
    result = _(42).clone(testCloneCustomizerFn);
    result = _(42).clone(testCloneCustomizerFn, any);
}
{
    let result: string[];
    result = _.clone<string[]>([]);
    result = _.clone<string[]>([], false);
    result = _.clone<string[]>([], false, testCloneCustomizerFn);
    result = _.clone<string[]>([], false, testCloneCustomizerFn, any);
    result = _.clone<string[]>([], testCloneCustomizerFn);
    result = _.clone<string[]>([], testCloneCustomizerFn, any);
    result = _<string>([]).clone();
    result = _<string>([]).clone(false);
    result = _<string>([]).clone(false, testCloneCustomizerFn);
    result = _<string>([]).clone(false, testCloneCustomizerFn, any);
    result = _<string>([]).clone(testCloneCustomizerFn);
    result = _<string>([]).clone(testCloneCustomizerFn, any);
}
{
    let result: {a: {b: number;}};
    result = _.clone<{a: {b: number;}}>({a: {b: 2}});
    result = _.clone<{a: {b: number;}}>({a: {b: 2}}, false);
    result = _.clone<{a: {b: number;}}>({a: {b: 2}}, false, testCloneCustomizerFn);
    result = _.clone<{a: {b: number;}}>({a: {b: 2}}, false, testCloneCustomizerFn, any);
    result = _.clone<{a: {b: number;}}>({a: {b: 2}}, testCloneCustomizerFn);
    result = _.clone<{a: {b: number;}}>({a: {b: 2}}, testCloneCustomizerFn, any);
    result = _({a: {b: 2}}).clone();
    result = _({a: {b: 2}}).clone(false);
    result = _({a: {b: 2}}).clone(false, testCloneCustomizerFn);
    result = _({a: {b: 2}}).clone(false, testCloneCustomizerFn, any);
    result = _({a: {b: 2}}).clone(testCloneCustomizerFn);
    result = _({a: {b: 2}}).clone(testCloneCustomizerFn, any);
}

// _.cloneDeep
interface TestCloneDeepCustomizerFn {
    (value: any): any;
}
var testCloneDeepCustomizerFn: TestCloneDeepCustomizerFn;
{
    let result: number;
    result = _.cloneDeep<number>(42);
    result = _.cloneDeep<number>(42, testCloneDeepCustomizerFn);
    result = _.cloneDeep<number>(42, testCloneDeepCustomizerFn, any);
    result = _(42).cloneDeep();
    result = _(42).cloneDeep(testCloneDeepCustomizerFn);
    result = _(42).cloneDeep(testCloneDeepCustomizerFn, any);
}
{
    let result: string[];
    result = _.cloneDeep<string[]>([]);
    result = _.cloneDeep<string[]>([], testCloneDeepCustomizerFn);
    result = _.cloneDeep<string[]>([], testCloneDeepCustomizerFn, any);
    result = _<string>([]).cloneDeep();
    result = _<string>([]).cloneDeep(testCloneDeepCustomizerFn);
    result = _<string>([]).cloneDeep(testCloneDeepCustomizerFn, any);
}
{
    let result: {a: {b: number;}};
    result = _.cloneDeep<{a: {b: number;}}>({a: {b: 2}});
    result = _.cloneDeep<{a: {b: number;}}>({a: {b: 2}}, testCloneDeepCustomizerFn);
    result = _.cloneDeep<{a: {b: number;}}>({a: {b: 2}}, testCloneDeepCustomizerFn, any);
    result = _({a: {b: 2}}).cloneDeep();
    result = _({a: {b: 2}}).cloneDeep(testCloneDeepCustomizerFn);
    result = _({a: {b: 2}}).cloneDeep(testCloneDeepCustomizerFn, any);
}

// _.gt
result = <boolean>_.gt(1, 2);
result = <boolean>_(1).gt(2);
result = <boolean>_([]).gt(2);
result = <boolean>_({}).gt(2);

// _.gte
result = <boolean>_.gte(1, 2);
result = <boolean>_(1).gte(2);
result = <boolean>_([]).gte(2);
result = <boolean>_({}).gte(2);

// _.isArguments
result = <boolean>_.isArguments(any);
result = <boolean>_(1).isArguments();
result = <boolean>_<any>([]).isArguments();
result = <boolean>_({}).isArguments();

// _.isArray
result = <boolean>_.isArray(any);
result = <boolean>_(1).isArray();
result = <boolean>_<any>([]).isArray();
result = <boolean>_({}).isArray();

// _.isBoolean
result = <boolean>_.isBoolean(any);
result = <boolean>_(1).isBoolean();
result = <boolean>_<any>([]).isBoolean();
result = <boolean>_({}).isBoolean();

// _.isDate
result = <boolean>_.isDate(any);
result = <boolean>_(42).isDate();
result = <boolean>_<any>([]).isDate();
result = <boolean>_({}).isDate();

// _.isElement
result = <boolean>_.isElement(any);
result = <boolean>_(42).isElement();
result = <boolean>_<any>([]).isElement();
result = <boolean>_({}).isElement();

// _.isEmpty
result = <boolean>_.isEmpty([1, 2, 3]);
result = <boolean>_.isEmpty({});
result = <boolean>_.isEmpty('');
result = <boolean>_([1, 2, 3]).isEmpty();
result = <boolean>_({}).isEmpty();
result = <boolean>_('').isEmpty();

// _.isError
result = <boolean>_.isError(any);
result = <boolean>_(1).isError();
result = <boolean>_<any>([]).isError();
result = <boolean>_({}).isError();

// _.isFinite
result = <boolean>_.isFinite(any);
result = <boolean>_(1).isFinite();
result = <boolean>_<any>([]).isFinite();
result = <boolean>_({}).isFinite();

// _.isFunction
result = <boolean>_.isFunction(any);
result = <boolean>_(1).isFunction();
result = <boolean>_<any>([]).isFunction();
result = <boolean>_({}).isFunction();

// _.isMatch
var testIsMatchCustiomizerFn: (value: any, other: any, indexOrKey: number|string) => boolean;
result = <boolean>_.isMatch({}, {});
result = <boolean>_.isMatch({}, {}, testIsMatchCustiomizerFn);
result = <boolean>_.isMatch({}, {}, testIsMatchCustiomizerFn, {});
result = <boolean>_({}).isMatch({});
result = <boolean>_({}).isMatch({}, testIsMatchCustiomizerFn);
result = <boolean>_({}).isMatch({}, testIsMatchCustiomizerFn, {});

// _.isNaN
result = <boolean>_.isNaN(NaN);
result = <boolean>_.isNaN(new Number(NaN));
result = <boolean>_.isNaN(undefined);
result = <boolean>_(NaN).isNaN();
result = <boolean>_(new Number(NaN)).isNaN();
result = <boolean>_(undefined).isNaN();

// _.isNative
result = <boolean>_.isNative(Array.prototype.push);
result = <boolean>_(Array.prototype.push).isNative();

// _.isNull
result = <boolean>_.isNull(any);
result = <boolean>_(1).isNull();
result = <boolean>_<any>([]).isNull();
result = <boolean>_({}).isNull();

// _.isNumber
result = <boolean>_.isNumber(any);
result = <boolean>_(1).isNumber();
result = <boolean>_<any>([]).isNumber();
result = <boolean>_({}).isNumber();

// _.isObject
result = <boolean>_.isObject(any);
result = <boolean>_(1).isObject();
result = <boolean>_<any>([]).isObject();
result = <boolean>_({}).isObject();

// _.isPlainObject
result = <boolean>_.isPlainObject(any);
result = <boolean>_(1).isPlainObject();
result = <boolean>_<any>([]).isPlainObject();
result = <boolean>_({}).isPlainObject();

// _.isRegExp
result = <boolean>_.isRegExp(any);
result = <boolean>_(1).isRegExp();
result = <boolean>_<any>([]).isRegExp();
result = <boolean>_({}).isRegExp();

// _.isString
result = <boolean>_.isString(any);
result = <boolean>_(1).isString();
result = <boolean>_<any>([]).isString();
result = <boolean>_({}).isString();

// _.isTypedArray
result = <boolean>_.isTypedArray([]);
result = <boolean>_([]).isTypedArray();

// _.isUndefined
result = <boolean>_.isUndefined(any);
result = <boolean>_(1).isUndefined();
result = <boolean>_<any>([]).isUndefined();
result = <boolean>_({}).isUndefined();

// _.lt
result = <boolean>_.lt(1, 2);
result = <boolean>_(1).lt(2);
result = <boolean>_([]).lt(2);
result = <boolean>_({}).lt(2);

// _.lte
result = <boolean>_.lte(1, 2);
result = <boolean>_(1).lte(2);
result = <boolean>_([]).lte(2);
result = <boolean>_({}).lte(2);

// _.toPlainObject
result = <Object>_.toPlainObject();
result = <Object>_.toPlainObject(true);
result = <Object>_.toPlainObject(1);
result = <Object>_.toPlainObject('a');
result = <Object>_.toPlainObject([]);
result = <Object>_.toPlainObject({});
result = <Object>_(true).toPlainObject();
result = <Object>_(1).toPlainObject();
result = <Object>_('a').toPlainObject();
result = <Object>_([1]).toPlainObject();
result = <Object>_<string>([]).toPlainObject();
result = <Object>_({}).toPlainObject();

/********
 * Math *
 ********/

// _.add
result = <number>_.add(1, 1);
result = <number>_(1).add(1);

/**********
 * Number *
 **********/

// _.inRange
result = <boolean>_.inRange(3, 2, 4);
result = <boolean>_.inRange(4, 8);
result = <boolean>_(3).inRange(2, 4);
result = <boolean>_(4).inRange(8);

/*********
* Object *
**********/
interface NameAge {
    name: string;
    age: number;
}
result = <NameAge>_.assign({ 'name': 'moe' }, { 'age': 40 });
result = <NameAge>_.assign({ 'name': 'moe' }, { 'age': 40 }, function (a, b) {
    return typeof a == 'undefined' ? b : a;
});

result = <_.LoDashObjectWrapper<NameAge>>_({ 'name': 'moe' }).assign({ 'age': 40 });
result = <_.LoDashObjectWrapper<NameAge>>_({ 'name': 'moe' }).assign({ 'age': 40 }, function (a, b) {
    return typeof a == 'undefined' ? b : a;
});

result = <NameAge>_.extend({ 'name': 'moe' }, { 'age': 40 });
result = <NameAge>_.extend({ 'name': 'moe' }, { 'age': 40 }, function (a, b) {
    return typeof a == 'undefined' ? b : a;
});

result = <_.LoDashObjectWrapper<NameAge>>_({ 'name': 'moe' }).extend({ 'age': 40 });
result = <_.LoDashObjectWrapper<NameAge>>_({ 'name': 'moe' }).extend({ 'age': 40 }, function (a, b) {
    return typeof a == 'undefined' ? b : a;
});

// _.create
interface TestCreateProto {
    a: number;
}
interface TestCreateProps {
    b: string;
}
interface TestCreateTResult extends TestCreateProto, TestCreateProps {}
var testCreateProto: TestCreateProto;
var testCreateProps: TestCreateProps;
result = <{}>_.create(testCreateProto);
result = <{}>_.create(testCreateProto, testCreateProps);
result = <TestCreateProto>_.create<TestCreateProto>(testCreateProto);
result = <TestCreateTResult>_.create<TestCreateTResult>(testCreateProto, testCreateProps);
result = <{}>_(testCreateProto).create().value();
result = <{}>_(testCreateProto).create(testCreateProps).value();
result = <TestCreateProto>_(testCreateProto).create<TestCreateProto>().value();
result = <TestCreateTResult>_(testCreateProto).create<TestCreateTResult>(testCreateProps).value();

interface Food {
    name: string;
    type: string;
}
var foodDefaults = { 'name': 'apple' };
result = <Food>_.defaults(foodDefaults, { 'name': 'banana', 'type': 'fruit' });
result = <_.LoDashObjectWrapper<Food>>_(foodDefaults).defaults({ 'name': 'banana', 'type': 'fruit' });

//_.defaultsDeep
interface DefaultsDeepResult {
    user: {
        name: string;
        age: number;
    }
}
var TestDefaultsDeepObject = {'user': {'name': 'barney'}};
var TestDefaultsDeepSource = {'user': {'name': 'fred', 'age': 36}};
result = <DefaultsDeepResult>_.defaultsDeep(TestDefaultsDeepObject, TestDefaultsDeepSource);
result = <DefaultsDeepResult>_(TestDefaultsDeepObject).defaultsDeep<DefaultsDeepResult>(TestDefaultsDeepSource).value();

result = <string>_.findKey({ 'a': 1, 'b': 2, 'c': 3, 'd': 4 }, function (num) {
    return num % 2 == 0;
});

result = <string>_.findLastKey({ 'a': 1, 'b': 2, 'c': 3, 'd': 4 }, function (num) {
    return num % 2 == 1;
});

result = <Dog>_.forIn(new Dog('Dagny'), function (value, key) {
    console.log(key);
});

result = <_.LoDashObjectWrapper<Dog>>_(new Dog('Dagny')).forIn(function (value, key) {
    console.log(key);
});

result = <Dog>_.forInRight(new Dog('Dagny'), function (value, key) {
    console.log(key);
});

result = <_.LoDashObjectWrapper<Dog>>_(new Dog('Dagny')).forInRight(function (value, key) {
    console.log(key);
});

interface ZeroOne {
    0: string;
    1: string;
    one: string;
}

result = <ZeroOne>_.forOwn(<ZeroOne>{ '0': 'zero', '1': 'one', 'one': '2' }, function (num, key) {
    console.log(key);
});

result = <_.LoDashObjectWrapper<ZeroOne>>_({ '0': 'zero', '1': 'one', 'length': 2 }).forOwn(function (num, key) {
    console.log(key);
});

result = <any>_.forOwnRight({ '0': 'zero', '1': 'one', 'length': 2 }, function (num, key) {
    console.log(key);
});

result = <_.LoDashObjectWrapper<ZeroOne>>_({ '0': 'zero', '1': 'one', 'length': 2 }).forOwnRight(function (num, key) {
    console.log(key);
});

result = <string[]>_.functions(_);
result = <string[]>_.methods(_);

result = <_.LoDashArrayWrapper<string>>_(_).functions();
result = <_.LoDashArrayWrapper<string>>_(_).methods();

// _.get
result = <number>_.get<number>({ 'a': [{ 'b': { 'c': 3 } }] }, 'a[0].b.c');

{
    let result: TResult;
    result = _.get<TResult>({}, '');
    result = _.get<TResult>({}, 42);
    result = _.get<TResult>({}, true);
    result = _.get<TResult>({}, ['', 42, true]);
    result = _({}).get<TResult>('');
    result = _({}).get<TResult>(42);
    result = _({}).get<TResult>(true);
    result = _({}).get<TResult>(['', 42, true]);
}

// _.has
result = <boolean>_.has({}, '');
result = <boolean>_.has({}, 42);
result = <boolean>_.has({}, true);
result = <boolean>_.has({}, ['', 42, true]);
result = <boolean>_({}).has('');
result = <boolean>_({}).has(42);
result = <boolean>_({}).has(true);
result = <boolean>_({}).has(['', 42, true]);

interface FirstSecond {
    first: string;
    second: string;
}
result = <FirstSecond>_.invert({ 'first': 'moe', 'second': 'larry' });

// _.isEqual (alias: _.eq)
result = <boolean>_.isEqual(1, 1);
result = <boolean>_(1).isEqual(1);
result = <boolean>_.eq(1, 1);
result = <boolean>_(1).eq(1);

var testEqObject = { 'user': 'fred' };
var testEqOtherObject = { 'user': 'fred' };
result = <boolean>_.isEqual(testEqObject, testEqOtherObject);
result = <boolean>_(testEqObject).isEqual(testEqOtherObject);
result = <boolean>_.eq(testEqObject, testEqOtherObject);
result = <boolean>_(testEqObject).eq(testEqOtherObject);

var testEqArray = ['hello', 'goodbye'];
var testEqOtherArray = ['hi', 'goodbye'];
var testEqCustomizerFn = (value: any, other: any): boolean => {
    if (_.every([value, other], RegExp.prototype.test, /^h(?:i|ello)$/)) {
        return true;
    }
};
result = <boolean>_.isEqual(testEqArray, testEqOtherArray, testEqCustomizerFn);
result = <boolean>_(testEqArray).isEqual(testEqOtherArray, testEqCustomizerFn);
result = <boolean>_.eq(testEqArray, testEqOtherArray, testEqCustomizerFn);
result = <boolean>_(testEqArray).eq(testEqOtherArray, testEqCustomizerFn);

class Stooge {
    constructor(
        public name: string,
        public age: number
        ) { }
}

result = <string[]>_.keys({ 'one': 1, 'two': 2, 'three': 3 });
result = <string[]>_({ 'one': 1, 'two': 2, 'three': 3 }).keys().value();

result = <string[]>_.keysIn({ 'one': 1, 'two': 2, 'three': 3 });
result = <string[]>_({ 'one': 1, 'two': 2, 'three': 3 }).keysIn().value();

var mergeNames = {
    'stooges': [
        { 'name': 'moe' },
        { 'name': 'larry' }
    ]
};

var mergeAges = {
    'stooges': [
        { 'age': 40 },
        { 'age': 50 }
    ]
};

result = <NameAge>_.merge(mergeNames, mergeAges);

var mergeFood = {
    'fruits': ['apple'],
    'vegetables': ['beet']
};

var mergeOtherFood: { [index: string]: string[] } = {
    'fruits': ['banana'],
    'vegetables': ['carrot']
};

interface FruitVeg {
    [index: string]: string[];
    fruits: string[];
    vegetables: string[]
};

result = <FruitVeg[]>_.merge(<FruitVeg>mergeFood, <FruitVeg>mergeOtherFood, function (a: any, b: any) {
    return _.isArray(a) ? a.concat(b) : undefined;
});

interface HasName {
    name: string;
}
result = <HasName>_.omit({ 'name': 'moe', 'age': 40 }, 'age');
result = <HasName>_.omit({ 'name': 'moe', 'age': 40 }, ['age']);
result = <HasName>_.omit({ 'name': 'moe', 'age': 40 }, function (value) {
    return typeof value == 'number';
});
result = <HasName>_({ 'name': 'moe', 'age': 40 }).omit('age').value();
result = <HasName>_({ 'name': 'moe', 'age': 40 }).omit(['age']).value();
result = <HasName>_({ 'name': 'moe', 'age': 40 }).omit(function (value) {
    return typeof value == 'number';
}).value();

result = <any[][]>_.pairs({ 'moe': 30, 'larry': 40 });
result = <any[][]>_({ 'moe': 30, 'larry': 40 }).pairs().value();

// _.pick
interface TestPickFn {
    (element: any, key: string, collection: any): boolean;
}
{
    let testPickFn: TestPickFn;
    let result: TResult;
    result = _.pick<TResult, Object>({}, 0, '1', true, [2], ['3'], [true], [4, '5', true]);
    result = _.pick<TResult, Object>({}, testPickFn);
    result = _.pick<TResult, Object>({}, testPickFn, any);
    result = _({}).pick<TResult>(0, '1', true, [2], ['3'], [true], [4, '5', true]).value();
    result = _({}).pick<TResult>(testPickFn).value();
    result = _({}).pick<TResult>(testPickFn, any).value();
}

// _.set
result = <{ a: { b: { c: number; }}[]}>_.set({ 'a': [{ 'b': { 'c': 3 } }] }, 'a[0].b.c', 4);
result = <{ a: { b: { c: number; }}[]}>_({ 'a': [{ 'b': { 'c': 3 } }] }).set('a[0].b.c', 4).value();

result = <number[]>_.transform([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], function (r: number[], num: number) {
    num *= num;
    if (num % 2) {
        return r.push(num) < 3;
    }
});
// → [1, 9, 25]

result = <{ a: number; b: number; c: number; }>_.transform(<{ [index: string]: number; }>{ 'a': 1, 'b': 2, 'c': 3 }, function (r: any, num: number, key: string) {
    r[key] = num * 3;
});

// _.values
class TestValues {
    public a = 1;
    public b = 2;
    public c: string;
}
TestValues.prototype.c = 'a';
result = <number[]>_.values<number>(new TestValues());
// → [1, 2] (iteration order is not guaranteed)
result = <number[]>_(new TestValues()).values<number>().value();
// → [1, 2] (iteration order is not guaranteed)

// _.valueIn
class TestValueIn {
    public a = 1;
    public b = 2;
    public c: number;
}
TestValueIn.prototype.c = 3;
result = <number[]>_.valuesIn<number>(new TestValueIn());
// → [1, 2, 3]
result = <number[]>_(new TestValueIn()).valuesIn<number>().value();
// → [1, 2, 3]

/**********
* Utility *
***********/

// _.attempt
interface TestAttemptFn {
    (): TResult;
}
var testAttempFn: TestAttemptFn;
result = <TResult|Error>_.attempt<TResult>(testAttempFn);
result = <TResult|Error>_(testAttempFn).attempt<TResult>();

var lodash = <typeof _>_.noConflict();

result = <number>_.random(0, 5);
result = <number>_.random(5);
result = <number>_.random(5, true);
result = <number>_.random(1.2, 5.2);
result = <number>_.random(0, 5, true);

// _.noop
result = <void>_.noop();
result = <void>_.noop(1);
result = <void>_.noop('a', 1);
result = <void>_.noop(true, 'a', 1);
result = <void>_('a').noop(true, 'a', 1);
result = <void>_([1]).noop(true, 'a', 1);
result = <void>_<string>([]).noop(true, 'a', 1);
result = <void>_({}).noop(true, 'a', 1);
result = <void>_(any).noop(true, 'a', 1);

var object = {
    'cheese': 'crumpets',
    'one': 1,
    'nested': {
        'two': 2
    },
    'stuff': function () {
        return 'nonsense';
    }
};

result = <string>_.result(object, 'cheese');
result = <string>_.result(object, 'stuff');
result = _.result<number>(object, 'one');
result = _.result<number>(object, ['nested', 'two'] );

var tempObject = {};
result = <typeof _>_.runInContext(tempObject);

// _.property
interface TestPropertyObject {
    a: {
        b: number;
    }
}
var testPropertyObject: TestPropertyObject;
result = <number>_.property<TestPropertyObject, number>('a.b')(testPropertyObject);
result = <number>_.property<TestPropertyObject, number>(['a', 'b'])(testPropertyObject);
result = <number>(_('a.b').property<TestPropertyObject, number>().value())(testPropertyObject);
result = <number>(_(['a', 'b']).property<TestPropertyObject, number>().value())(testPropertyObject);

// _.propertyOf
interface TestPropertyOfObject {
    a: {
        b: number[];
    }
}
var testPropertyOfObject: TestPropertyOfObject;
result = <(path: string|string[]) => any>_.propertyOf({});
result = <(path: string|string[]) => any>_.propertyOf<TestPropertyOfObject>(testPropertyOfObject);
result = <(path: string|string[]) => any>_({}).propertyOf().value();

// _.range
result = <number[]>_.range(10);
result = <number[]>_.range(1, 11);
result = <number[]>_.range(0, 30, 5);
result = <number[]>_(10).range().value();
result = <number[]>_(1).range(11).value();
result = <number[]>_(0).range(30, 5).value();

class Mage {
    public castSpell(n: number) {
        return n;
    }

    public cast(n: number) {
        return n;
    }
}

/*********
* String
*********/

// _.camelCase
result = <string>_.camelCase('Foo Bar');
result = <string>_('Foo Bar').camelCase();

// _.capitalize
result = <string>_.capitalize('fred');
result = <string>_('fred').capitalize();

// _.deburr
result = <string>_.deburr('déjà vu');
result = <string>_('déjà vu').deburr();

// _.endsWith
result = <boolean>_.endsWith('abc', 'c');
result = <boolean>_.endsWith('abc', 'c', 1);
result = <boolean>_('abc').endsWith('c');
result = <boolean>_('abc').endsWith('c', 1);

// _.escape
result = <string>_.escape('fred, barney, & pebbles');
result = <string>_('fred, barney, & pebbles').escape();

// _.escapeRegExp
result = <string>_.escapeRegExp('[lodash](https://lodash.com/)');
result = <string>_('[lodash](https://lodash.com/)').escapeRegExp();

// _.kebabCase
result = <string>_.kebabCase('Foo Bar');
result = <string>_('Foo Bar').kebabCase();

// _.pad
result = <string>_.pad('abd');
result = <string>_.pad('abc', 8);
result = <string>_.pad('abc', 8, '_-');
result = <string>_('abc').pad();
result = <string>_('abc').pad(8);
result = <string>_('abc').pad(8, '_-');

// _.padLeft
result = <string>_.padLeft('abc');
result = <string>_.padLeft('abc', 6);
result = <string>_.padLeft('abc', 6, '_-');
result = <string>_('abc').padLeft();
result = <string>_('abc').padLeft(6);
result = <string>_('abc').padLeft(6, '_-');

// _.padRight
result = <string>_.padRight('abc');
result = <string>_.padRight('abc', 6);
result = <string>_.padRight('abc', 6, '_-');
result = <string>_('abc').padRight();
result = <string>_('abc').padRight(6);
result = <string>_('abc').padRight(6, '_-');

// _.parseInt
result = <number>_.parseInt('08');
result = <number>_.parseInt('08', 10);
result = <number>_('08').parseInt();
result = <number>_('08').parseInt(10);

// _.repeat
result = <string>_.repeat('*', 3);
result = <string>_('*').repeat(3);

// _.snakeCase
result = <string>_.snakeCase('Foo Bar');
result = <string>_('Foo Bar').snakeCase();

// _.startCase
result = <string>_.startCase('--foo-bar');
result = <string>_('--foo-bar').startCase();

// _.startsWith
result = <boolean>_.startsWith('abc', 'a');
result = <boolean>_.startsWith('abc', 'a', 1);
result = <boolean>_('abc').startsWith('a');
result = <boolean>_('abc').startsWith('a', 1);

// _.template
interface TestTemplateOptions {
    escape?: RegExp;
    evaluate?: RegExp;
    imports?: _.Dictionary<any>;
    interpolate?: RegExp;
    variable?: string;
}
interface TestTemplateExecutor {
    (obj?: Object): string;
    source: string;
}
{
    let testTemplateOptions: TestTemplateOptions
    let result: TestTemplateExecutor;
    result = _.template('');
    result = _.template('', testTemplateOptions);
    result = _('').template();
    result = _('').template(testTemplateOptions);
}

// _.trim
result = <string>_.trim();
result = <string>_.trim('  abc  ');
result = <string>_.trim('-_-abc-_-', '_-');
result = <string>_('-_-abc-_-').trim();
result = <string>_('-_-abc-_-').trim('_-');

// _.trimLeft
result = <string>_.trimLeft();
result = <string>_.trimLeft('  abc  ');
result = <string>_.trimLeft('-_-abc-_-', '_-');
result = <string>_('-_-abc-_-').trimLeft();
result = <string>_('-_-abc-_-').trimLeft('_-');

// _.trimRight
result = <string>_.trimRight();
result = <string>_.trimRight('  abc  ');
result = <string>_.trimRight('-_-abc-_-', '_-');
result = <string>_('-_-abc-_-').trimRight();
result = <string>_('-_-abc-_-').trimRight('_-');

// _.trunc
result = <string>_.trunc('hi-diddly-ho there, neighborino');
result = <string>_.trunc('hi-diddly-ho there, neighborino', 24);
result = <string>_.trunc('hi-diddly-ho there, neighborino', { 'length': 24, 'separator': ' ' });
result = <string>_.trunc('hi-diddly-ho there, neighborino', { 'length': 24, 'separator': /,? +/ });
result = <string>_.trunc('hi-diddly-ho there, neighborino', { 'omission': ' […]' });
result = <string>_('hi-diddly-ho there, neighborino').trunc();
result = <string>_('hi-diddly-ho there, neighborino').trunc(24);
result = <string>_('hi-diddly-ho there, neighborino').trunc({ 'length': 24, 'separator': ' ' });
result = <string>_('hi-diddly-ho there, neighborino').trunc({ 'length': 24, 'separator': /,? +/ });
result = <string>_('hi-diddly-ho there, neighborino').trunc({ 'omission': ' […]' });

// _.unescape
result = <string>_.unescape('fred, barney, &amp; pebbles');
result = <string>_('fred, barney, &amp; pebbles').unescape();

// _.words
result = <string[]>_.words('fred, barney, & pebbles');
result = <string[]>_.words('fred, barney, & pebbles', /[^, ]+/g);
result = <string[]>_('fred, barney, & pebbles').words();
result = <string[]>_('fred, barney, & pebbles').words(/[^, ]+/g);

/**********
* Utilities *
***********/

// _.constant
result = <() => number>_.constant<number>(1);
result = <() => string>_.constant<string>('a');
result = <() => boolean>_.constant<boolean>(true);
result = <() => any[]>_.constant<any[]>([]);
result = <() => {}>_.constant<{}>({});
result = <() => number>_(1).constant<number>();
result = <() => string>_('a').constant<string>();
result = <() => boolean>_(true).constant<boolean>();
result = <() => any[]>_(['a']).constant<any[]>();
result = <() => {}>_({}).constant<{}>();

// _.identity
{
    let testIdentityValue: TResult;
    let result: TResult;
    result = _.identity<TResult>(testIdentityValue);
    result = _(testIdentityValue).identity();
}
{
    let result: number;
    result = _(42).identity();
}
{
    let result: boolean[];
    result = _<boolean>([]).identity();
}

// _.method
class TestMethod {
    a = {
        b: (a1: number, a2: number) => a1 + a2
    }
}
var TestMethodObject = new TestMethod();
result = <number>(_.method<number>('a.b', 1, 2))(TestMethodObject);
result = <number>(_.method<number>(['a', 'b'], 1, 2))(TestMethodObject);
result = <number>(_('a.b').method<number>(1, 2).value())(TestMethodObject);
result = <number>(_(['a', 'b']).method<number>(1, 2).value())(TestMethodObject);

// _.methodOf
class TestMethodOf {
    a = [
        (a1: number, a2: number) => a1 + a2
    ];
}
var TestMethodOfObject = new TestMethodOf();
result = <number>(_.methodOf<number>(TestMethodOfObject, 1, 2))('a[0]');
result = <number>(_.methodOf<number>(TestMethodOfObject, 1, 2))(['a', '0']);
result = <number>(_(TestMethodOfObject).methodOf<number>(1, 2).value())('a[0]');
result = <number>(_(TestMethodOfObject).methodOf<number>(1, 2).value())(['a', '0']);

// _.mixin
{
    let testMixinSource: _.Dictionary<Function>;
    let testMixinOptions: {chain?: boolean;}
    let result: TResult;
    result = _.mixin<TResult, Object>({}, testMixinSource);
    result = _.mixin<TResult, Object>({}, testMixinSource, testMixinOptions);
    result = _.mixin<TResult>(testMixinSource);
    result = _.mixin<TResult>(testMixinSource, testMixinOptions);
    result = _({}).mixin<TResult>(testMixinSource).value();
    result = _({}).mixin<TResult>(testMixinSource, testMixinOptions).value();
    result = _(testMixinSource).mixin<TResult>().value();
    result = _(testMixinSource).mixin<TResult>(testMixinOptions).value();
}

// _.uniqueId
result = <string>_.uniqueId();
result = <string>_.uniqueId('');
result = <string>_('').uniqueId();

result = <string>_.VERSION;
result = <_.Support>_.support;
result = <_.TemplateSettings>_.templateSettings;

// _.times
{
    let result: number[];
    result = _.times(42);
    result = _(42).times().value();
}
{
    let testTimesFn: (num: number) => TResult;
    let result: TResult[];
    result = _.times(42, testTimesFn);
    result = _.times(42, testTimesFn, any);
    result = _(42).times(testTimesFn).value();
    result = _(42).times(testTimesFn, any).value();
}