SyntaxError: export declarations may only appear at top level of a module

[rcyber]

Hi all!

I'm newbie in custom visuals development so sorry for a stupid question may be.

I follow this instruction for creating a new custom visual.

I created the new project using the same way as instruction says. It works fine.

Well, I installed d3 library and added typings using command:

npm install @types/[email protected] --save-dev

My little project understands type d3 after that. But it does not work now.

I did a little research and saw the following message in browser console:

As I see the script crashes because export command appears at NOT top level of module.

I will be grateful for any help.

Thanks in advance,

Alexander.

[v-viig · Accepted solution]

What version of d3 did you install?

Power BI Visuals Tools support d3v3 only.

We'd recommend to install d3v3:

npm i [email protected] @types/[email protected]

Ignat Vilesov,

Software Engineer

Microsoft Power BI Custom Visuals

[email protected]

[rcyber]

Hello Ignat!

Thank you so much! It works.

I think it will be good to update this section of tutorial on Github.

It contains an example of d3 version 4.9.1 installation.

Thank you once again!

Regards,

Alexander.

[v-viig]

Hi Alexander,

Thank you for the feedback.

We're working on improving our documentation.

Ignat Vilesov,

Software Engineer

Microsoft Power BI Custom Visuals

[email protected]