node resolution for bundling

package-lock.json

@@ -72,6 +72,15 @@
       "integrity": "sha512-eWQGP3qtxwL8FGneRrC5DwrJLGN4/dH1clNTuLfN81HCrxVtxRjygDTUoZJ5ASlDEeo0ppYFQjQIlXhtXpOn6g==",
       "dev": true
     },
+    "@types/resolve": {
+      "version": "0.0.8",
+      "resolved": "https://registry.npmjs.org/@types/resolve/-/resolve-0.0.8.tgz",
+      "integrity": "sha512-auApPaJf3NPfe18hSoJkp8EbZzer2ISk7o8mCC3M9he/a04+gbMF97NkpD2S8riMGvm4BMRI59/SZQSaLTKpsQ==",
+      "dev": true,
+      "requires": {
+        "@types/node": "*"
+      }
+    },
     "acorn": {
       "version": "7.1.1",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.1.tgz",
@@ -118,6 +127,12 @@
       "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==",
       "dev": true
     },
+    "builtin-modules": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-3.1.0.tgz",
+      "integrity": "sha512-k0KL0aWZuBt2lrxrcASWDfwOLMnodeQjodT/1SxEQAXsHANgo6ZC/VEaSEHCXt7aSTZ4/4H5LKa+tBXmW7Vtvw==",
+      "dev": true
+    },
     "chalk": {
       "version": "2.4.2",
       "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
@@ -228,6 +243,12 @@
       "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
       "dev": true
     },
+    "is-module": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/is-module/-/is-module-1.0.0.tgz",
+      "integrity": "sha1-Mlj7afeMFNW4FdZkM2tM/7ZEFZE=",
+      "dev": true
+    },
     "jest-worker": {
       "version": "24.9.0",
       "resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-24.9.0.tgz",
@@ -355,6 +376,19 @@
         "acorn": "^7.1.0"
       }
     },
+    "rollup-plugin-node-resolve": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.2.0.tgz",
+      "integrity": "sha512-jUlyaDXts7TW2CqQ4GaO5VJ4PwwaV8VUGA7+km3n6k6xtOEacf61u0VXwN80phY/evMcaS+9eIeJ9MOyDxt5Zw==",
+      "dev": true,
+      "requires": {
+        "@types/resolve": "0.0.8",
+        "builtin-modules": "^3.1.0",
+        "is-module": "^1.0.0",
+        "resolve": "^1.11.1",
+        "rollup-pluginutils": "^2.8.1"
+      }
+    },
     "rollup-plugin-terser": {
       "version": "5.3.0",
       "resolved": "https://registry.npmjs.org/rollup-plugin-terser/-/rollup-plugin-terser-5.3.0.tgz",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "roughjs",
-  "version": "4.1.4",
+  "version": "4.2.0",
   "description": "Create graphics using HTML Canvas or SVG with a hand-drawn, sketchy, appearance.",
   "main": "bundled/rough.cjs.js",
   "module": "bin/rough.js",
@@ -32,6 +32,7 @@
   "devDependencies": {
     "@rollup/plugin-typescript": "^2.1.0",
     "rollup": "^1.32.1",
+    "rollup-plugin-node-resolve": "^5.2.0",
     "rollup-plugin-terser": "^5.3.0",
     "tslint": "^5.20.1",
     "typescript": "^3.8.3"
@@ -41,4 +42,4 @@
     "points-on-curve": "^0.1.0",
     "points-on-path": "^0.1.0"
   }
-}
+}

rollup.config.js

@@ -1,3 +1,4 @@
+import resolve from 'rollup-plugin-node-resolve';
 import { terser } from "rollup-plugin-terser";
 import typescript from '@rollup/plugin-typescript';
 
@@ -11,7 +12,7 @@ export default [
       format: 'iife',
       name: 'rough'
     },
-    plugins: [terser()]
+    plugins: [resolve(), terser()]
   },
   {
     input,
@@ -19,7 +20,7 @@ export default [
       file: 'bundled/rough.esm.js',
       format: 'esm'
     },
-    plugins: [terser()]
+    plugins: [resolve(), terser()]
   },
   {
     input: 'src/rough.ts',
@@ -27,6 +28,6 @@ export default [
       file: 'bundled/rough.cjs.js',
       format: 'cjs'
     },
-    plugins: [typescript({ target: "es5" }), terser()]
+    plugins: [resolve(), typescript({ target: "es5" }), terser()]
   }
 ];