$ npm install kripken/ammo.js

package-lock.json

@@ -4,6 +4,10 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "ammo.js": {
+      "version": "github:kripken/ammo.js#a4bec933859e452acd2c18e4152ac2a6a95e806f",
+      "from": "github:kripken/ammo.js"
+    },
     "jq-web": {
       "version": "0.5.1",
       "resolved": "https://registry.npmjs.org/jq-web/-/jq-web-0.5.1.tgz",

package.json

@@ -10,6 +10,7 @@
   "author": "NagayamaRyoga <nagayama15@sec.is.kit.ac.jp>",
   "license": "GPL-3.0",
   "dependencies": {
+    "ammo.js": "github:kripken/ammo.js",
     "jq-web": "^0.5.1"
   }
 }