feat: export er layout (#52)

Author: Yanyan-Wang

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@antv/layout",
-  "version": "0.1.19-beta.5",
+  "version": "0.1.19",
   "description": "graph layout algorithm",
   "main": "lib/index.js",
   "module": "es/index.js",

src/layout/index.ts

@@ -12,6 +12,7 @@ import { FruchtermanGPULayout } from "./gpu/fruchterman";
 import { GForceGPULayout } from "./gpu/gForce";
 import { ComboForceLayout } from "./comboForce";
 import { ForceAtlas2Layout } from "./forceAtlas2";
+import { ERLayout } from './er';
 
 import { Layout, Layouts } from "./layout";
 
@@ -33,6 +34,7 @@ export {
   GForceGPULayout,
   ComboForceLayout,
   ForceAtlas2Layout,
+  ERLayout
 };
 
 // types file

src/layout/layout.ts

@@ -15,6 +15,7 @@ import { FruchtermanGPULayout } from "./gpu/fruchterman";
 import { GForceGPULayout } from "./gpu/gForce";
 import { ComboForceLayout } from "./comboForce";
 import { ForceAtlas2Layout } from "./forceAtlas2";
+import { ERLayout } from "./er";
 export class Layout {
   public readonly layoutInstance: Base;
 
@@ -66,4 +67,5 @@ export const Layouts: { [key: string]: any } = {
   random: RandomLayout,
   'gForce-gpu': GForceGPULayout,
   'fruchterman-gpu': FruchtermanGPULayout,
+  er: ERLayout,
 };

src/layout/types.ts

@@ -367,5 +367,6 @@ export namespace ILayout {
     | GForceLayoutOptions
     | GForceGPULayoutOptions
     | ComboForceLayoutOptions
-    | ForceAtlas2LayoutOptions;
+    | ForceAtlas2LayoutOptions
+    | ERLayoutOptions;
 }