Fix strict mode errors from typings (#563)

* Fix strict mode errors from typings

* Remove comments

Author: kurkle

types/index.d.ts

@@ -47,4 +47,4 @@ export function pan(chart: Chart, amount: PanAmount, scales?: Scale[], mode?: Up
 export function zoom(chart: Chart, amount: ZoomAmount, mode?: UpdateMode): void;
 export function zoomScale(chart: Chart, scaleId: string, range: ScaleRange, mode?: UpdateMode): void;
 export function resetZoom(chart: Chart, mode?: UpdateMode): void;
-export function getZoomLevel(chart): number;
+export function getZoomLevel(chart: Chart): number;

types/options.d.ts

@@ -169,10 +169,7 @@ export interface ScaleLimits {
 }
 
 export interface LimitOptions {
-  // Default horizontal and vertical scale limits
-  x?: ScaleLimits;
-  y?: ScaleLimits;
-  // Optional additional scale limits, indexed by the scale's ID (key)
+  // Scale limits, indexed by the scale's ID (key) or by axis (x/y)
   [axisId: string]: ScaleLimits;
 }
 

types/tests/exports.ts

@@ -25,6 +25,11 @@ const chart = new Chart('id', {
             min: 1,
             max: 2,
             minRange: 1
+          },
+          y2: {
+            min: 10,
+            max: 20,
+            minRange: 5
           }
         },
         pan: {

types/tests/tsconfig.json

@@ -3,6 +3,7 @@
     "target": "ES6",
     "moduleResolution": "Node",
     "alwaysStrict": true,
+    "strict": true,
     "noEmit": true
   },
   "include": [