diff --git a/nodejs/yarn.lock b/nodejs/yarn.lock
new file mode 100644
index 0000000..9ef8ae0
--- /dev/null
+++ b/nodejs/yarn.lock
@@ -0,0 +1,48 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@types/node@^14.0.13":
+  version "14.0.13"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.0.13.tgz#ee1128e881b874c371374c1f72201893616417c9"
+  integrity sha512-rouEWBImiRaSJsVA+ITTFM6ZxibuAlTuNOCyxVbwreu6k6+ujs7DfnU9o+PShFhET78pMBl3eH+AGSI5eOTkPA==
+
+blake2b-wasm@^1.1.0:
+  version "1.1.7"
+  resolved "https://registry.yarnpkg.com/blake2b-wasm/-/blake2b-wasm-1.1.7.tgz#e4d075da10068e5d4c3ec1fb9accc4d186c55d81"
+  integrity sha512-oFIHvXhlz/DUgF0kq5B1CqxIDjIJwh9iDeUUGQUcvgiGz7Wdw03McEO7CfLBy7QKGdsydcMCgO9jFNBAFCtFcA==
+  dependencies:
+    nanoassert "^1.0.0"
+
+blake2b@^2.1.3:
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/blake2b/-/blake2b-2.1.3.tgz#f5388be424768e7c6327025dad0c3c6d83351bca"
+  integrity sha512-pkDss4xFVbMb4270aCyGD3qLv92314Et+FsKzilCLxDz5DuZ2/1g3w4nmBbu6nKApPspnjG7JcwTjGZnduB1yg==
+  dependencies:
+    blake2b-wasm "^1.1.0"
+    nanoassert "^1.0.0"
+
+core-js@^3.6.5:
+  version "3.6.5"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.6.5.tgz#7395dc273af37fb2e50e9bd3d9fe841285231d1a"
+  integrity sha512-vZVEEwZoIsI+vPEuoF9Iqf5H7/M3eeQqWlQnYa8FSKKePuYTf5MWnxb5SDAzCa60b3JBRS5g9b+Dq7b1y/RCrA==
+
+ip@^1.1.5:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/ip/-/ip-1.1.5.tgz#bdded70114290828c0a039e72ef25f5aaec4354a"
+  integrity sha1-vd7XARQpCCjAoDnnLvJfWq7ENUo=
+
+nanoassert@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/nanoassert/-/nanoassert-1.1.0.tgz#4f3152e09540fde28c76f44b19bbcd1d5a42478d"
+  integrity sha1-TzFS4JVA/eKMdvRLGbvNHVpCR40=
+
+tweetnacl@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-1.0.3.tgz#ac0af71680458d8a6378d0d0d050ab1407d35596"
+  integrity sha512-6rt+RN7aOi1nGMyC4Xa5DdYiukl2UWCbcJft7YhxReBGQD7OAM8Pbxw6YMo4r2diNEA8FEmu32YOn9rhaiE5yw==
+
+typescript@^3.9.5:
+  version "3.9.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.5.tgz#586f0dba300cde8be52dd1ac4f7e1009c1b13f36"
+  integrity sha512-hSAifV3k+i6lEoCJ2k6R2Z/rp/H3+8sdmcn5NrS3/3kE7+RyZXm9aqvxWqjEXHAd8b0pShatpcdMTvEdvAJltQ==