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[RFC] Lodash flow better arguments (#9492)

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* Add a lot of generic variants of _.flow

* lodash: write test for `_.flow` overloads
This commit is contained in:
Artur Eshenbrener
2016-06-08 19:16:02 +09:00
committed by Masahiro Wakame
parent 66999f382f
commit 3b32b57713
2 changed files with 44 additions and 0 deletions
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lodash/lodash-tests.ts
+15
View File
@@ -5724,6 +5724,21 @@ namespace TestFlip {
namespace TestFlow {
let Fn1: (n: number) => number;
let Fn2: (m: number, n: number) => number;
let Fn3: (a: number) => string;
let Fn4: (a: string) => number;
{
// type infer test
let result: (m: number, n: number) => number;
result = _.flow(Fn2, Fn1);
result = _.flow(Fn2, Fn1, Fn1);
result = _.flow(Fn2, Fn1, Fn1, Fn1);
result = _.flow(Fn2, Fn1, Fn1, Fn1, Fn1);
result = _.flow(Fn2, Fn1, Fn1, Fn1, Fn1, Fn1);
result = _.flow(Fn2, Fn1, Fn1, Fn1, Fn1, Fn1, Fn1);
result = _.flow(Fn2, Fn1, Fn3, Fn4);
}
{
let result: (m: number, n: number) => number;
lodash/lodash.d.ts
Vendored
+29
View File
@@ -10253,6 +10253,35 @@ declare module _ {
* @param funcs Functions to invoke.
* @return Returns the new function.
*/
// 1-argument first function
flow<A1, R1, R2>(f1: (a1: A1) => R1, f2: (a: R1) => R2): (a1: A1) => R2;
flow<A1, R1, R2, R3>(f1: (a1: A1) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3): (a1: A1) => R3;
flow<A1, R1, R2, R3, R4>(f1: (a1: A1) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4): (a1: A1) => R4;
flow<A1, R1, R2, R3, R4, R5>(f1: (a1: A1) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4, f5: (a: R4) => R5): (a1: A1) => R5;
flow<A1, R1, R2, R3, R4, R5, R6>(f1: (a1: A1) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4, f5: (a: R4) => R5, f6: (a: R5) => R6): (a1: A1) => R6;
flow<A1, R1, R2, R3, R4, R5, R6, R7>(f1: (a1: A1) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4, f5: (a: R4) => R5, f6: (a: R5) => R6, f7: (a: R6) => R7): (a1: A1) => R7;
// 2-argument first function
flow<A1, A2, R1, R2>(f1: (a1: A1, a2: A2) => R1, f2: (a: R1) => R2): (a1: A1, a2: A2) => R2;
flow<A1, A2, R1, R2, R3>(f1: (a1: A1, a2: A2) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3): (a1: A1, a2: A2) => R3;
flow<A1, A2, R1, R2, R3, R4>(f1: (a1: A1, a2: A2) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4): (a1: A1, a2: A2) => R4;
flow<A1, A2, R1, R2, R3, R4, R5>(f1: (a1: A1, a2: A2) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4, f5: (a: R4) => R5): (a1: A1, a2: A2) => R5;
flow<A1, A2, R1, R2, R3, R4, R5, R6>(f1: (a1: A1, a2: A2) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4, f5: (a: R4) => R5, f6: (a: R5) => R6): (a1: A1, a2: A2) => R6;
flow<A1, A2, R1, R2, R3, R4, R5, R6, R7>(f1: (a1: A1, a2: A2) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4, f5: (a: R4) => R5, f6: (a: R5) => R6, f7: (a: R6) => R7): (a1: A1, a2: A2) => R7;
// 3-argument first function
flow<A1, A2, A3, R1, R2>(f1: (a1: A1, a2: A2, a3: A3) => R1, f2: (a: R1) => R2): (a1: A1, a2: A2, a3: A3) => R2;
flow<A1, A2, A3, R1, R2, R3>(f1: (a1: A1, a2: A2, a3: A3) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3): (a1: A1, a2: A2, a3: A3) => R3;
flow<A1, A2, A3, R1, R2, R3, R4>(f1: (a1: A1, a2: A2, a3: A3) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4): (a1: A1, a2: A2, a3: A3) => R4;
flow<A1, A2, A3, R1, R2, R3, R4, R5>(f1: (a1: A1, a2: A2, a3: A3) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4, f5: (a: R4) => R5): (a1: A1, a2: A2, a3: A3) => R5;
flow<A1, A2, A3, R1, R2, R3, R4, R5, R6>(f1: (a1: A1, a2: A2, a3: A3) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4, f5: (a: R4) => R5, f6: (a: R5) => R6): (a1: A1, a2: A2, a3: A3) => R6;
flow<A1, A2, A3, R1, R2, R3, R4, R5, R6, R7>(f1: (a1: A1, a2: A2, a3: A3) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4, f5: (a: R4) => R5, f6: (a: R5) => R6, f7: (a: R6) => R7): (a1: A1, a2: A2, a3: A3) => R7;
// 4-argument first function
flow<A1, A2, A3, A4, R1, R2>(f1: (a1: A1, a2: A2, a3: A3, a4: A4) => R1, f2: (a: R1) => R2): (a1: A1, a2: A2, a3: A3, a4: A4) => R2;
flow<A1, A2, A3, A4, R1, R2, R3>(f1: (a1: A1, a2: A2, a3: A3, a4: A4) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3): (a1: A1, a2: A2, a3: A3, a4: A4) => R3;
flow<A1, A2, A3, A4, R1, R2, R3, R4>(f1: (a1: A1, a2: A2, a3: A3, a4: A4) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4): (a1: A1, a2: A2, a3: A3, a4: A4) => R4;
flow<A1, A2, A3, A4, R1, R2, R3, R4, R5>(f1: (a1: A1, a2: A2, a3: A3, a4: A4) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4, f5: (a: R4) => R5): (a1: A1, a2: A2, a3: A3, a4: A4) => R5;
flow<A1, A2, A3, A4, R1, R2, R3, R4, R5, R6>(f1: (a1: A1, a2: A2, a3: A3, a4: A4) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4, f5: (a: R4) => R5, f6: (a: R5) => R6): (a1: A1, a2: A2, a3: A3, a4: A4) => R6;
flow<A1, A2, A3, A4, R1, R2, R3, R4, R5, R6, R7>(f1: (a1: A1, a2: A2, a3: A3, a4: A4) => R1, f2: (a: R1) => R2, f3: (a: R2) => R3, f4: (a: R3) => R4, f5: (a: R4) => R5, f6: (a: R5) => R6, f7: (a: R6) => R7): (a1: A1, a2: A2, a3: A3, a4: A4) => R7;
// generic function
flow<TResult extends Function>(...funcs: Function[]): TResult;
}