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fix msg precendence when sending a merging object with msg and err #1654

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merged 1 commit into from
Feb 22, 2023
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fix msg precendence when sending a merging object with msg and err #1654

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2 changes: 1 addition & 1 deletion lib/proto.js
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Original file line number Diff line number Diff line change
Expand Up @@ -193,7 +193,7 @@ function write (_obj, msg, num) {
}
} else {
obj = _obj
if (msg === undefined && _obj[errorKey]) {
if (msg === undefined && _obj.msg === undefined && _obj[errorKey]) {
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Hi all, should this be _obj[messageKey] (instead of _obj.msg) since that msg key is configurable?

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@joelmukuthu I think that may be true. Can you write a test that proves it and submit a PR to fix?

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Done: #1746. I did two separate git pushes to try and trigger the failing test on CI but it didn't work as approval is needed. Hopefully you'll be able to trigger CI on the first commit!

msg = _obj[errorKey].message
}
}
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20 changes: 20 additions & 0 deletions test/error.test.js
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Expand Up @@ -356,3 +356,23 @@ test('correctly adds msg on error when nestedKey is used', async ({ same }) => {
msg: 'msg message'
})
})

test('msg should take precedence over error message on mergingObject', async ({ same }) => {
const err = new Error('myerror')
const stream = sink()
const instance = pino(stream)
instance.error({ msg: 'my message', err })
const result = await once(stream, 'data')
delete result.time
same(result, {
pid,
hostname,
level: 50,
err: {
type: 'Error',
stack: err.stack,
message: err.message
},
msg: 'my message'
})
})