Fix coordinateConverter typos and add to types (gagan-bansal#36)

README.md

@@ -143,7 +143,7 @@ Here are all options available for initializing the instance.
 * **mapExtentFromGeojson:** boolean, if true `mapExtent` is calculated from GeoJSON data that is passed in `.convert` function.
 
 * **fitTo:** 'width' | 'height' Fit output SVG map to width or height. If nothing is provided, the program tries to fit the data within width or height so that full mapExtent is visible in viewport.
-* **coordinateCoverter:** 'function' to convert input GeoJSON coordinates while converting to SVG. This function should take coordinates of a point `[x,y]` and returns transformed point `[x, y]`.
+* **coordinateConverter:** 'function' to convert input GeoJSON coordinates while converting to SVG. This function should take coordinates of a point `[x,y]` and returns transformed point `[x, y]`.
 * **pointAsCircle:** true | false, default is false. For point GeoJSON return circle element for option:
     ``` { "pointAsCircel": true } ```
     output SVG string would be:

src/index.d.ts

@@ -66,6 +66,9 @@ declare module 'geojson2svg' {
     /** Fit ouput svg map to width or height. */
     fitTo?: 'width' | 'height'
 
+    /** Convert input GeoJSON coordinates while converting to SVG. This function should take coordinates of a point [x,y] and returns transformed point [x, y] */
+    coordinateConverter?: (point: [number, number]) => [number, number],
+
     /** a number, precision of output svg coordinates. */
     precision?: number
 

src/index.js

@@ -16,7 +16,7 @@ var GeoJSON2SVG = function(options = {}) {
   this.options = options;
   this.viewportSize = options.viewportSize ||
     {width: 256, height: 256};
-  if (options.coordinateCoverter
+  if (options.coordinateConverter
     && typeof options.coordinateConverter != 'function')
   {
     throw new Error('"coordinateConverter" option should be function');