binary

files/index.d.ts

@@ -5474,7 +5474,7 @@ Notes:
 
 */
 // @SINGLE_MARKER
-export function binary<T>(x: T): T;
+export function binary<T extends (...arg: any[]) => any>(fn: T): (...args: any[]) => ReturnType<T>;
 
 /*
 Method: call

rambda.js

@@ -1,6 +1,4 @@
 /// <reference types="./index.d.ts" />
-export * from './src/F.js'
-export * from './src/T.js'
 export * from './src/add.js'
 export * from './src/addIndex.js'
 export * from './src/addIndexRight.js'
@@ -52,6 +50,7 @@ export * from './src/endsWith.js'
 export * from './src/eqProps.js'
 export * from './src/equals.js'
 export * from './src/evolve.js'
+export * from './src/F.js'
 export * from './src/filter.js'
 export * from './src/find.js'
 export * from './src/findIndex.js'
@@ -137,8 +136,8 @@ export * from './src/prop.js'
 export * from './src/propEq.js'
 export * from './src/propIs.js'
 export * from './src/propOr.js'
-export * from './src/propSatisfies.js'
 export * from './src/props.js'
+export * from './src/propSatisfies.js'
 export * from './src/range.js'
 export * from './src/reduce.js'
 export * from './src/reject.js'
@@ -157,6 +156,7 @@ export * from './src/startsWith.js'
 export * from './src/subtract.js'
 export * from './src/sum.js'
 export * from './src/symmetricDifference.js'
+export * from './src/T.js'
 export * from './src/tail.js'
 export * from './src/take.js'
 export * from './src/takeLast.js'

source/binary-spec.ts

@@ -0,0 +1,14 @@
+import {binary} from 'rambda'
+
+describe('R.binary', () => {
+  it('happy', () => {
+    const result = binary(function(x: number, y: number, z) {
+      expect(arguments.length).toBe(2)
+      expect(z).toBeUndefined()
+      expect(x).toBe(10)
+      expect(y).toBe(20)
+      return x + y
+    })(10, 20, 30)
+    result // $ExpectType number
+  })
+})

source/binary.js

@@ -1,7 +1,5 @@
-export function binary(foo, bar) {
-  if (arguments.length === 1){
-    return (_bar) => binary(foo, _bar);
-  }
+export function binary(fn){
+  if (fn.length <= 2) return fn
 
-  return
-}
+  return (a, b) => fn(a, b)
+}

source/binary.spec.js

@@ -1,32 +1,17 @@
-import { binary } from './binary'
-import { binary as binaryRamda } from 'ramda'
+import { binary } from './binary.js'
 
 test('happy', () => {
-  const result = binary()
-  console.log(result)
-})
-
-/*
-var R = require('../source/index.js');
-var eq = require('./shared/eq.js');
-
-
-describe('binary', function() {
-  it('turns multiple-argument function into binary one', function() {
-    R.binary(function(x, y, z) {
-      eq(arguments.length, 2);
-      eq(typeof z, 'undefined');
-    })(10, 20, 30);
-  });
+  const result = binary(function (
+    x, y, z
+  ){
+    expect(arguments).toHaveLength(2)
+    expect(z).toBeUndefined()
+    expect(x).toBe(10)
+    expect(y).toBe(20)
 
-  it('initial arguments are passed through normally', function() {
-    R.binary(function(x, y, z) {
-      eq(x, 10);
-      eq(y, 20);
-      void z;
-    })(10, 20, 30);
-  });
-
-});
-
-*/
+    return x + y
+  })(
+    10, 20, 30
+  )
+  expect(result).toBe(30)
+})