fix: signature fixes

Author: farfromrefug

src/charting/data/BaseDataSet.ts

@@ -7,6 +7,7 @@ import { GradientColor } from '../model/GradientColor';
 import { Color } from '@nativescript/core/color/color';
 import { Utils } from '../utils/Utils';
 import { Rounding } from './DataSet';
+import { IValueFormatter } from 'nativescript-chart/formatter/IValueFormatter';
 
 /**
  * Created by Philipp Jahoda on 21/10/15.
@@ -74,7 +75,7 @@ export abstract class BaseDataSet<T extends Entry> implements IDataSet<T> {
     /**
      * custom formatter that is used instead of the auto-formatter if set
      */
-    protected mValueFormatter: ValueFormatter;
+    protected mValueFormatter: IValueFormatter;
 
     /**
      * the typeface used for the value text
@@ -270,7 +271,7 @@ export abstract class BaseDataSet<T extends Entry> implements IDataSet<T> {
         return this.mHighlightEnabled;
     }
 
-    public setValueFormatter(f) {
+    public setValueFormatter(f: IValueFormatter) {
         if (f == null) return;
         else this.mValueFormatter = f;
     }

src/charting/data/ChartData.ts

@@ -2,6 +2,7 @@ import { IDataSet } from '../interfaces/datasets/IDataSet';
 import { Entry } from './Entry';
 import { AxisDependency } from '../components/YAxis';
 import { Highlight } from '../highlight/Highlight';
+import { IValueFormatter } from 'nativescript-chart/formatter/IValueFormatter';
 
 export abstract class ChartData<U extends Entry, T extends IDataSet<U>> {
     /**
@@ -587,7 +588,7 @@ export abstract class ChartData<U extends Entry, T extends IDataSet<U>> {
      *
      * @param f
      */
-    public setValueFormatter(f) {
+    public setValueFormatter(f: IValueFormatter) {
         if (f == null) return;
         else {
             for (let set of this.mDataSets) {

src/charting/interfaces/datasets/IDataSet.ts

@@ -8,6 +8,7 @@ import { LegendForm } from '../../components/Legend';
 import { DashPathEffect } from 'nativescript-canvas';
 import { Color } from '@nativescript/core/color/color';
 import { Font } from '@nativescript/core/ui/styling/font';
+import { IValueFormatter } from 'nativescript-chart/formatter/IValueFormatter';
 
 /**
  * Created by Philipp Jahoda on 21/10/15.
@@ -320,14 +321,14 @@ export interface IDataSet<T extends Entry> {
      *
      * @param f
      */
-    setValueFormatter(f: ValueFormatter);
+    setValueFormatter(f: IValueFormatter);
 
     /**
      * Returns the formatter used for drawing the values inside the chart.
      *
      * @return
      */
-    getValueFormatter(): ValueFormatter;
+    getValueFormatter(): IValueFormatter;
 
     /**
      * Returns true if the valueFormatter object of this DataSet is null.

src/charting/utils/Utils.ts

@@ -4,6 +4,7 @@ import { ValueFormatter } from '../formatter/ValueFormatter';
 import { DefaultValueFormatter } from '../formatter/DefaultValueFormatter';
 import { profile } from '@nativescript/core/profiling/profiling';
 import { isAndroid } from '@nativescript/core/platform';
+import { IValueFormatter } from 'nativescript-chart/formatter/IValueFormatter';
 
 export type FloatArray = Float32Array | Float64Array;
 export let FloatConstructor: typeof Float32Array | typeof Float64Array;
@@ -157,7 +158,7 @@ export namespace Utils {
      */
     const POW_10 = [1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000];
 
-    let mDefaultValueFormatter: ValueFormatter = generateDefaultValueFormatter();
+    let mDefaultValueFormatter: IValueFormatter = generateDefaultValueFormatter();
 
     export function generateDefaultValueFormatter() {
         return new DefaultValueFormatter(1);