refactor(es modules): modulize utils

src/types/common.d.ts

@@ -0,0 +1 @@
+type UnknownObject = {[key: string]: unknown};

src/types/coordinates.d.ts

@@ -0,0 +1,8 @@
+interface IMapCoordinates {
+  latT: number;
+  latN: number;
+  latS: number;
+  lonT: number;
+  lonW: number;
+  lonE: number;
+}

src/types/modules.d.ts

@@ -0,0 +1,4 @@
+declare module "lineclip" {
+  export function polygon(points: number[][], bbox: number[], result?: number[][]): number[][];
+  export function lineclip(points: number[][], bbox: number[]): number[][];
+}

src/types/overrides.d.ts

@@ -13,6 +13,9 @@ interface Window {
   pack: IPack;
   grig: IGrid;
   d3: typeof d3;
+  graphHeight: number;
+  graphWidth: number;
+  mapCoordinates: IMapCoordinates;
 }
 
 interface Node {

src/types/point.d.ts

@@ -0,0 +1,3 @@
+type TPoint = [number, number];
+
+type TPoints = TPoint[];