What happened?

I first identified the problem when I called octokit.rest.apps.getInstallation, and expected it to return a single Installation instance as per the declared return type.

What I discovered was that the return value breached the return-type contract and instead contained an array of all installations for the app, as per octokit.rest.apps.listInstallations. This then caused a runtime failure due to the conflic between the declared return type and the actual return type.

Further investigation by way of the https://github.com/octokit/plugin-request-log.js plugin confirms that the wrong endpoint is being called.

Versions

octokit.js 4.0.2
@octokit/plugin-rest-endpoint-methods 13.2.6

Relevant log output

No response

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