@actions/core 1.2.2 breaks when trying to set a number as output

[dguo]

Describe the bug

My team has code like:

core.setOutput("test_db_migrations", testDbMigrations ? 1 : 0);

This broke with the 1.2.2 release because it expects the output to be a string.

The error is: TypeError: (s || "").replace is not a function and occurs at node_modules/@actions/core/lib/command.js:66:10).

To Reproduce

Try to set a number as output.

Expected behavior

The library could do a .toString(), or I recommend at least updating the README to make it clear that the output value has to be a string.

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Additional context

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[wpscholar]

What if I want to return an object?

[gr2m]

setOutput does not support objects. You can set it to a stringified object, but then have to parse it later

[thboop]

Resolved in #405