ramda: Add R.pathSatisfies

types/ramda/index.d.ts

@@ -5,6 +5,7 @@
 //                 Liam Goodacre <https://github.com/LiamGoodacre>
 //                 Matt Dziuban <https://github.com/mrdziuban>
 //                 Stephen King <https://github.com/sbking>
+//                 Alejandro Fernandez Haro <https://github.com/afharo>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.2
 
@@ -1195,6 +1196,13 @@ declare namespace R {
         pathOr<T>(d: T, p: Path): (obj: any) => T|any;
         pathOr<T>(d: T): CurriedFunction2<Path, any, T|any>;
 
+        /**
+         * Returns true if the specified object property satisfies the given predicate; false otherwise.
+         */
+        pathSatisfies<T,U>(pred: (val: T) => boolean, path: Path, obj: U): boolean;
+        pathSatisfies<T,U>(pred: (val: T) => boolean, path: Path): (obj: U) => boolean;
+        pathSatisfies<T,U>(pred: (val: T) => boolean): CurriedFunction2<Path, U, boolean>;
+
         /**
          * Returns a partial copy of an object containing only the keys specified.  If the key does not exist, the
          * property is ignored.

types/ramda/ramda-tests.ts

@@ -1294,6 +1294,12 @@ class Rectangle {
     R.pathOr(orValue, testPath, {c: {b: 2}}); //=> "N/A"
 }
 
+() => {
+    const a: boolean = R.pathSatisfies(x => x > 0, ['x'], {x: 1, y: 2}); //=> true
+    const b: boolean = R.pathSatisfies(x => x > 0, ['x'])({x: 1, y: 2}); //=> true
+    const c: boolean = R.pathSatisfies(x => x > 0)(['x'])({x: 1, y: 2}); //=> true
+}
+
 () => {
     var isPositive = function(n: number) {
         return n > 0;