diff --git a/.upm/store.json b/.upm/store.json
new file mode 100644
index 0000000000000000000000000000000000000000..be7f137b38a7418ba18d379e88a8c52c2c57489e
--- /dev/null
+++ b/.upm/store.json
@@ -0,0 +1 @@
+{"version":2,"languages":{"nodejs-yarn":{"specfileHash":"abab35c9ba66256c189aa42c5e29aa02","lockfileHash":"b4fe953f33f9be5c0086b24be0e7aad5"}}}
diff --git a/package.json b/package.json
index c0fb3dafc88ef82c12c4d837abb05f851ac9c037..aa448d8d36cec284db45bc6e3cb6735c4186664f 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,7 @@
     "vite": "^2.8.0"
   },
   "dependencies": {
+    "guess": "^1.0.2",
     "three": "^0.137.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 6e01f823de1ecbdee5f75e8e6f98caf0f95ef5fb..238c4f74517e10d386539c7c9d9f83009eb9baf9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -137,6 +137,11 @@ function-bind@^1.1.1:
   resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
   integrity sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==
 
+guess@^1.0.2:
+  version "1.0.2"
+  resolved "http://mirrors.csdn.net.cn/repository/csdn-npm-mirrors/guess/-/guess-1.0.2.tgz#1297e6be4b51855c958bbf8f2a6e23e2234ce44b"
+  integrity sha512-giSVed+pcC74rOB6QutqV44aAY2cZcuwJLpfLbNQdbb6+l+QWktBawYrSYxZozZq4pvFo+RrJuXMA4kblgcH8A==
+
 has@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/has/-/has-1.0.3.tgz#722d7cbfc1f6aa8241f16dd814e011e1f41e8796"