export-api-def doesn't work with loopback-boot@3

[ffflabs]

Description/Steps to reproduce

Use the generator to scaffold a new application. Then export the api definition:

npm i -g loopback-cli
lb app experiment
cd experiment
lb export-api-def

It works! At this point, the dependencies list loopback-boot@2.6.5

If you upgrade to loopback-boot@3, like it's shown in loopback-getting-started

Running lb export-api-def yields an empty definition:

Link to reproduction sandbox

Uh... should I provide access to my linux environment? ❓

Expected result

It should export at least the same information than before. I was hoping for it to actually output more info.

Additional information

$  node -e 'console.log(process.platform, process.arch, process.versions.node)'

linux x64 8.16.0

Before:

$  npm ls --prod --depth 0 | grep loopback

├── loopback@3.25.1
├── loopback-boot@2.28.0
├── loopback-component-explorer@6.4.0

After:

$  npm ls --prod --depth 0 | grep loopback

├── loopback@3.25.1
├── loopback-boot@3.3.0
├── loopback-component-explorer@6.4.0

[mrbatista]

@amenadiel I have open PR strongloop/generator-loopback#411 to resolve this issue.