npm WARN babel-plugin-transform-vue-jsx@3.5.0 requires...

When I run 
```meteor npm i```
I get
```npm WARN babel-plugin-transform-vue-jsx@3.5.0 requires a peer of babel-helper-vue-jsx-merge-props@^2.0.0 but none was installed.```

Resolved by
``` meteor npm install --save babel-helper-vue-jsx-merge-props```