assert: accept undefined as message input #22696
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So far it was difficult to tell what the actual error was about if there was only the user error. To overcome this, the user message and the auto-generated message will now be visible at the same time.
This is important to allow any input value to be visible to the users in case the message is used to highlight the failing passed through input. E.g., `assert(/abc/.test(input), input)` should highlight, that `input` is set to `undefined`.
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Trott
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Sep 5, 2018
| --> | ||
| * `options` {Object} | ||
| * `message` {string} If provided, the error message is going to be set to this | ||
| value. | ||
| * `message` {any} If provided, it is going to be appended to auto-generated |
Trott
reviewed
Sep 5, 2018
| * `userMessage` {any} Contains the actual passed through message by the user. | ||
| It will not be set in case the user does not provide a error message. | ||
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| All error messages thrown by the `assert` module are auto-generated. If the user |
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This sentence is confusing to me. I don't think auto-generated is a clear term and should probably be avoided.
@nodejs/documentation
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Closing for now. I'll open a new PR when I get to it. |
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This is a follow up PR for #22695 but this is currently blocked by #22694. I'll remove the first commit as soon as #22695 lands.
This is important to allow any input value to be visible to the users
in case the message is used to highlight the failing passed through
input.
E.g.,
assert(/abc/.test(input), input)should highlight, thatinputis set to
undefined.Refs: #22695, #22694
Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passes