fix(invoke): write result as JSON to stdout, errors to stderr#724
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fix(invoke): write result as JSON to stdout, errors to stderr#724
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- JSON.stringify the execution result so it is machine-readable instead of printing [object Object] (#436) - Route the final result to stdout so it can be piped (#592) - Route error output and the post-progress blank line to stderr (#592) Closes #436 Closes #592 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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What
Fixes the output of
serverless invoke stepfto be machine-readable and correctly routed by stream.Why
logger.log(result)passed a raw object to the Serverless CLI logger, which printed[object Object]instead of the actual execution result (Getting [object Object] from invoke stepf #436)The two fixes are combined in one commit as they are inseparable — routing to stdout requires serialising the value first.
Note: #435 (
-nshortcut not mapping to--name) was verified as already fixed by a prior change that addedtype: 'string'to the options definition. Closed separately.Closes #436
Closes #592
Test plan
#invoke(): success writes JSON to stdout, failure writes JSON to stderr withexitCode=1, blank line separator goes to stderrnpm test— 500 passing🤖 Generated with Claude Code