fix: resolve missing output when using --json

[dariodevito]

Summary

Fixes #4758

Adds support for --json when using with netlify deploy --trigger.

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Just to call out, I had intended to add an integration test in ./tests/integration/210.command.deploy.test.js along the lines of below. However, because the test site isn't built from/linked to a git codebase, the --trigger option (which calls createSiteBuild) returns a 404 (doesn't have a codebase to build from).

I think it would make sense for a Netlify developer to specify the repo this should be linked to (and by extension add tests for --trigger. (I'm guessing that is why it hasn't been covered before now)

  test.serial('should return valid json when both --trigger and --json are passed', async (t) => {
    await withSiteBuilder('site-with-public-folder', async (builder) => {
      const content = '<h1>⊂◉‿◉つ</h1>'
      builder
        .withContentFile({
          path: 'public/index.html',
          content,
        })
        .withNetlifyToml({
          config: {
            build: { publish: 'public' },
          },
        })

      await builder.buildAsync()

      const output = await callCli(['deploy', '--trigger', '--json'], {
        cwd: builder.directory,
        env: { NETLIFY_SITE_ID: t.context.siteId },
      })

      JSON.parse(output)
    })
  })

[danez]

Thanks for creating the PR.

We will check the test case you mentioned.

[danez]

lgtm
thanks again, I created a separate issue for the test.

[danez]

thanks for ordering 😘