Quiet errors from JSON.sh

Author: jasonkarns

libexec/nodenv-package-json-engine

@@ -39,7 +39,7 @@ extract_version_from_package_json() {
   package_json_path="$1"
   version_regex='\["engines","node"\][[:space:]]*"([^"]*)"'
   # -b -n gives minimal output - see https://github.com/dominictarr/JSON.sh#options
-  [[ $("$JSON_SH" -b -n < "$package_json_path") =~ $version_regex ]]
+  [[ $("$JSON_SH" -b -n < "$package_json_path" 2>/dev/null) =~ $version_regex ]]
   echo "${BASH_REMATCH[1]}"
 }
 

test/nodenv-package-json-engine.bats

@@ -90,3 +90,22 @@ load test_helper
 
   assert_success 'system'
 }
+
+@test 'Does not fail with empty or malformed package.json' {
+  in_example_package
+
+  # empty
+  touch package.json
+  run nodenv version-name
+  assert_success 'system'
+
+  # non json
+  echo "foo" > package.json
+  run nodenv version-name
+  assert_success 'system'
+
+  # malformed
+  echo "{" > package.json
+  run nodenv version-name
+  assert_success 'system'
+}