playwright/docs/src/test-api/class-testerror.md
Dmitry Gozman c68f57d2d0
docs: mark optional properties/arguments explicitly with "?" (#13369)
Previously, we were guessing whether something is optional from the
comment (looking for stuff like "defaults to" or "optional").

To remove this error-prone technique, every optional property or
argument (but not option) is explicitly marked with "?".
2022-04-06 19:02:10 -07:00

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# class: TestError
* langs: js
Information about an error thrown during test execution.
## property: TestError.message
- type: ?<[string]>
Error message. Set when [Error] (or its subclass) has been thrown.
## property: TestError.stack
- type: ?<[string]>
Error stack. Set when [Error] (or its subclass) has been thrown.
## property: TestError.value
- type: ?<[string]>
The value that was thrown. Set when anything except the [Error] (or its subclass) has been thrown.