fix: import with .js extension (#18)

* fix: import with .js extension

ES modules with relative imports must include extensions. `.js` is the
extension of the output of `.ts`, so apparently this is the way.

For more detail see
https://www.typescriptlang.org/docs/handbook/esm-node.html

* docs: fix transform code in example

README.md

@@ -103,7 +103,7 @@ avoidOverlap.run(
         const selected = select(node);
         const [x, y] = selected
           .attr('transform')
-          .match(/([0-9]+)/g)
+          .match(/([0-9\-\.]+)/g)
           .map((d) => +d);
 
         select(node).attr('transform', `translate(${x + dx}, ${y + dy})`);

src/index.ts

@@ -1,6 +1,6 @@
 import RBush from 'rbush';
 import uniqWith from 'lodash/uniqWith.js';
-import { defaultDebugFunc } from './debug';
+import { defaultDebugFunc } from './debug.js';
 
 export interface Bounds {
   x: number;