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Fixed some typings with the chain syntax

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This commit is contained in:
T.J. Lawrence
2014-01-19 23:48:11 -07:00
parent 7bbf3c44bc
commit 80dd267cc2
2 changed files with 53 additions and 30 deletions
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36
underscore/underscore-tests.ts
View File

@@ -283,24 +283,28 @@ _(['test', 'test']).pick(['test2', 'test2']);
//////////////// Chain Tests
function chain_tests() {
// https://typescript.codeplex.com/workitem/1960
var list:number[] = _.chain<number>([1, 2, 3, 4, 5, 6, 7, 8])
.filter(n => n % 2 == 0)
.map(n => n * n)
.value<number[]>();
_([1, 2, 3, 4])
.chain()
.filter((num: number) => {
return num % 2 == 0;
}).tap(alert)
.map((num: number) => {
return num * num;
})
var numArray: number[] = _.chain([1, 2, 3, 4, 5, 6, 7, 8])
.filter(num => num % 2 == 0)
.map(num => num * num)
.value();
_.chain([1, 2, 3, 200])
.filter(function (num: number) { return num % 2 == 0; })
var strArray: string[] = _([1, 2, 3, 4])
.chain()
.filter(num => num % 2 == 0)
.tap(alert)
.map(function (num: number) { return num * num })
.map(num => "string" + num)
.value();
var n : number = _.chain([1, 2, 3, 200])
.filter(num => num % 2 == 0)
.tap(alert)
.map(num => num * num)
.max()
.value();
var t2 : number = _([1, 2, 3]).chain()
.map(num=> [num, num + 1])
.flatten()
.find(num => num % 2 == 0)
.value();
}

47
underscore/underscore.d.ts vendored
View File

@@ -1364,7 +1364,8 @@ interface UnderscoreStatic {
* @param obj Object to chain.
* @return Wrapped `obj`.
**/
chain<T>(obj: any): _Chain<T>;
chain<T>(obj: T[]): _Chain<T>;
chain<T extends {}>(obj: T): _Chain<T>;
/**
* Extracts the value of a wrapped object.
@@ -2194,13 +2195,25 @@ interface _Chain<T> {
* Wrapped type `any[]`.
* @see _.map
**/
map<TResult>(iterator: _.ListIterator<T, TResult>, context?: any): _Chain<T>;
map<TArray>(iterator: (value: T, index: number, list: T[]) => TArray[], context?: any): _ChainOfArrays<TArray>;
//Not sure why this won't work, might be a TypeScript error? map<TArray>(iterator: _.ListIterator<T, TArray[]>, context?: any): _ChainOfArrays<TArray>;
/**
* Wrapped type `any[]`.
* @see _.map
**/
map<TResult>(iterator: _.ListIterator<T, TResult>, context?: any): _Chain<TResult>;
/**
* Wrapped type `any[]`.
* @see _.map
**/
map<TResult>(iterator: _.ObjectIterator<T, TResult>, context?: any): _Chain<T>;
map<TArray>(iterator: (element: T, key: string, list: any) => TArray[], context?: any): _ChainOfArrays<TArray>;
//Not sure why this won't work, might be a TypeScript error? //map<TArray>(iterator: _.ObjectIterator<T, TArray[]>, context?: any): _ChainOfArrays<TArray>;
/**
* Wrapped type `any[]`.
* @see _.map
**/
map<TResult>(iterator: _.ObjectIterator<T, TResult>, context?: any): _Chain<TResult>;
/**
* @see _.map
@@ -2243,7 +2256,7 @@ interface _Chain<T> {
* Wrapped type `any[]`.
* @see _.find
**/
find(iterator: _.ListIterator<T, boolean>, context?: any): _Chain<T>;
find(iterator: _.ListIterator<T, boolean>, context?: any): _ChainSingle<T>;
/**
* @see _.find
@@ -2271,7 +2284,7 @@ interface _Chain<T> {
* Wrapped type `any[]`.
* @see _.findWhere
**/
findWhere<U extends {}>(properties: U): _Chain<T>;
findWhere<U extends {}>(properties: U): _ChainSingle<T>;
/**
* Wrapped type `any[]`.
@@ -2323,43 +2336,43 @@ interface _Chain<T> {
* Wrapped type `any[]`.
* @see _.pluck
**/
pluck(propertyName: string): _Chain<T>;
pluck(propertyName: string): _Chain<any>;
/**
* Wrapped type `number[]`.
* @see _.max
**/
max(): _Chain<T>;
max(): _ChainSingle<T>;
/**
* Wrapped type `any[]`.
* @see _.max
**/
max(iterator: _.ListIterator<T, number>, context?: any): _Chain<T>;
max(iterator: _.ListIterator<T, number>, context?: any): _ChainSingle<T>;
/**
* Wrapped type `any[]`.
* @see _.max
**/
max(iterator?: _.ListIterator<T, any>, context?: any): _Chain<T>;
max(iterator?: _.ListIterator<T, any>, context?: any): _ChainSingle<T>;
/**
* Wrapped type `number[]`.
* @see _.min
**/
min(): _Chain<T>;
min(): _ChainSingle<T>;
/**
* Wrapped type `any[]`.
* @see _.min
**/
min(iterator: _.ListIterator<T, number>, context?: any): _Chain<T>;
min(iterator: _.ListIterator<T, number>, context?: any): _ChainSingle<T>;
/**
* Wrapped type `any[]`.
* @see _.min
**/
min(iterator?: _.ListIterator<T, any>, context?: any): _Chain<T>;
min(iterator?: _.ListIterator<T, any>, context?: any): _ChainSingle<T>;
/**
* Wrapped type `any[]`.
@@ -2518,7 +2531,7 @@ interface _Chain<T> {
* Wrapped type `any`.
* @see _.flatten
**/
flatten(shallow?: boolean): _Chain<T>;
flatten(shallow?: boolean): _Chain<any>;
/**
* Wrapped type `any[]`.
@@ -2947,7 +2960,13 @@ interface _Chain<T> {
* Wrapped type `any`.
* @see _.value
**/
value<TResult>(): TResult;
value<TResult>(): T[];
}
interface _ChainSingle<T> {
value(): T;
}
interface _ChainOfArrays<T> extends _Chain<T[]> {
flatten(): _Chain<T>;
}
declare var _: UnderscoreStatic;