build: add and use cross-env dep

package.json

@@ -27,6 +27,7 @@
     "@typescript-eslint/parser": "^4.29.0",
     "chai": "^4.3.4",
     "commitizen": "^4.2.4",
+    "cross-env": "^7.0.3",
     "cz-conventional-changelog": "^3.3.0",
     "dotenv": "^10.0.0",
     "eslint": "^7.32.0",
@@ -77,6 +78,6 @@
     "prettier": "prettier --config ./.prettierrc --write \"**/*.{js,json,md,sol,ts}\"",
     "prettier:check": "prettier --check --config ./.prettierrc \"**/*.{js,json,md,sol,ts}\"",
     "test": "hardhat test",
-    "typechain": "TS_NODE_TRANSPILE_ONLY hardhat typechain"
+    "typechain": "cross-env TS_NODE_TRANSPILE_ONLY=true hardhat typechain"
   }
 }

yarn.lock

@@ -1146,6 +1146,7 @@ __metadata:
     "@typescript-eslint/parser": ^4.29.0
     chai: ^4.3.4
     commitizen: ^4.2.4
+    cross-env: ^7.0.3
     cz-conventional-changelog: ^3.3.0
     dotenv: ^10.0.0
     eslint: ^7.32.0
@@ -4372,6 +4373,18 @@ __metadata:
   languageName: node
   linkType: hard
 
+"cross-env@npm:^7.0.3":
+  version: 7.0.3
+  resolution: "cross-env@npm:7.0.3"
+  dependencies:
+    cross-spawn: ^7.0.1
+  bin:
+    cross-env: src/bin/cross-env.js
+    cross-env-shell: src/bin/cross-env-shell.js
+  checksum: af4fa4dab3ddf6c25ed5e0c95ef53ea363aceb41741e22b7eae83a12cc10cb2416e3aba29c95f2f2c3a1aa918d3444fe92fab318a8ba761e8d52ae88388496cc
+  languageName: node
+  linkType: hard
+
 "cross-fetch@npm:^2.1.0, cross-fetch@npm:^2.1.1":
   version: 2.2.3
   resolution: "cross-fetch@npm:2.2.3"
@@ -4395,7 +4408,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"cross-spawn@npm:^7.0.2, cross-spawn@npm:^7.0.3":
+"cross-spawn@npm:^7.0.1, cross-spawn@npm:^7.0.2, cross-spawn@npm:^7.0.3":
   version: 7.0.3
   resolution: "cross-spawn@npm:7.0.3"
   dependencies: