Check for undefined in horizontal flyout layout function

[rachel-fenichel]

Check for duplicates

• I have searched for similar issues before opening a new one.

Description

In layout_ in flyout_horizontal.ts we access the block with const block = item.block. The result is nullable, so all later uses of block have to have a non-null assertion

To fix:

• Check whether block is undefined after setting const block = item.block.
• continue if block doesn't exist.
• Remove ! from after the remaining uses of block within the for loop.

To get set up for this issue:

• Run npm install from the root of the repository.
• Run npm run build from the root of the repository.
• Run npm run start to launch the test playground.

[SophieNguyen113]

:>

[TroySigX]

I'd love to work on this

[juhithaVd]

I want to work on this

[rachel-fenichel]

Thanks for your interest! This is being worked on in the blockly-dragon breakout room.

[juhithaVd]

Does that mean any of us can do the issue?

[rachel-fenichel]

Please join the breakout room to see what the status is and who is working on this.

[priya-rjb]

Hi, we are currently in the breakout room and would like to be assigned this code as we made progress. Thanks!