Merge pull request #6618 from chrootsu/lodash-initial

lodash: signatures of the method _.initial have been changed

lodash/lodash-tests.ts

@@ -681,14 +681,30 @@ module TestIndexOf {
 }
 
 //_.initial
-{
-    let testInitalArray: TResult[];
-    let testInitalList: _.List<TResult>;
-    let result: TResult[];
-    result = _.initial<TResult>(testInitalArray);
-    result = _.initial<TResult>(testInitalList);
-    result = _(testInitalArray).initial().value();
-    result = _(testInitalList).initial<TResult>().value();
+module TestInitial {
+    let array: TResult[];
+    let list: _.List<TResult>;
+
+    {
+        let result: TResult[];
+
+        result = _.initial<TResult>(array);
+        result = _.initial<TResult>(list);
+    }
+
+    {
+        let result: _.LoDashImplicitArrayWrapper<TResult>;
+
+        result = _(array).initial();
+        result = _(list).initial<TResult>();
+    }
+
+    {
+        let result: _.LoDashExplicitArrayWrapper<TResult>;
+
+        result = _(array).chain().initial();
+        result = _(list).chain().initial<TResult>();
+    }
 }
 
 // _.intersection

lodash/lodash.d.ts

@@ -1230,7 +1230,7 @@ declare module _ {
          * @param array The array to query.
          * @return Returns the slice of array.
          */
-        initial<T>(array: T[]|List<T>): T[];
+        initial<T>(array: List<T>): T[];
     }
 
     interface LoDashImplicitArrayWrapper<T> {
@@ -1244,7 +1244,21 @@ declare module _ {
         /**
          * @see _.initial
          */
-        initial<TResult>(): LoDashImplicitArrayWrapper<TResult>;
+        initial<T>(): LoDashImplicitArrayWrapper<T>;
+    }
+
+    interface LoDashExplicitArrayWrapper<T> {
+        /**
+         * @see _.initial
+         */
+        initial(): LoDashExplicitArrayWrapper<T>;
+    }
+
+    interface LoDashExplicitObjectWrapper<T> {
+        /**
+         * @see _.initial
+         */
+        initial<T>(): LoDashExplicitArrayWrapper<T>;
     }
 
     //_.intersection