If/else block fails inside do expression (T7267)

[babel-bot]

Issue originally made by @kolodny

Bug information

• Babel version: 6.6.5
• Node version: 5.5.0
• npm version: 3.3.12

Options

{ "presets": ["es2015", "stage-0"] }

Input code

const a = do { if (true) while(false) 22 }

Description

Here's a quick way to replicate

cd $(mktemp -d -t tmp)
npm init -y > /dev/null
npm i -D babel-core babel-cli babel-preset-es2015 babel-preset-stage-0 > /dev/null
echo '{ "presets": ["es2015", "stage-0"] }' > .babelrc
echo "const a = do { while(false) 22 }" > works.js
echo "const a = do { if (true) while(false) 22 }" > breaks.js

./node_modules/.bin/babel works.js && echo works
./node_modules/.bin/babel breaks.js

[jridgewell]

Fixed by #5693.

[hzoo]

Weird I thought I invited you already, you want to be a collab so you can close/label/merge and all that?

[jridgewell]

😁

[hzoo]

Let me know if you have more questions about how we do things on here/slack? Dono if you ever check that, also adding to https://github.com/babel/babel/wiki/Maintaining-Babel and contributing.md