add pre-commit hook for file size (#2206)

.husky/pre-commit

@@ -2,3 +2,5 @@
 . "$(dirname -- "$0")/_/husky.sh"
 
 yarn run lint-staged
+
+./scripts/lint/check-file-size.sh

scripts/lint/check-file-size.sh

@@ -0,0 +1,13 @@
+#! /bin/bash
+
+# list files staged for commit
+git diff --staged --name-only | \
+while read line; do 
+    # get size in bytes
+    size=$(wc -c "$line" | awk '{print $1}');
+    # verify staged files less than 1MB
+    if [ $((size)) -gt 1048576 ]; then
+        echo -e "\033[93m WARNING: $line greater than 1MB in size. \033[0m"
+        exit 1
+    fi
+done