Evade override mistake #6991
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Evade override mistake #6991
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See https://github.com/Agoric/agoric-sdk/blob/master/patches/inquirer%2B%2Brxjs%2B7.5.5.patch The original code used assignment to override the `constructor` property inherited from `Error.prototype`. However, if `Error.prototype` is frozen, as it is under Hardened JS (aka SES) or under the Node frozen intrinsics flag, then this assignment fails due to the JavaScript "override mistake". `enumerable: true` would accurately preserve the behavior of the original assignment, but I'm guessing that was not intentional. For an actual error subclass, this property would not be enumerable, so my PR currently proposes that. But either would work, so let me know if you'd like me to change it.
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Any progress on this? |
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I’m inclined to approve this, on the face of it. However is it possible to add a test for this? |
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Sorry, to clarify: we have plans to change the definition of these classes in upcoming versions, and I want to make sure we don't break anything. |
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Inactive PR... no response and no tests. |
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See https://github.com/Agoric/agoric-sdk/blob/master/patches/inquirer%2B%2Brxjs%2B7.5.5.patch
The original code used assignment to override the
constructorproperty inherited fromError.prototype. However, ifError.prototypeis frozen, as it is under Hardened JS (aka SES) or under the Node frozen intrinsics flag, then this assignment fails due to the JavaScript "override mistake".enumerable: truewould accurately preserve the behavior of the original assignment, but I'm guessing that was not intentional. For an actual error subclass, this property would not be enumerable, so my PR currently proposes that. But either would work, so let me know if you'd like me to change it.Description:
BREAKING CHANGE:
Related issue (if exists):
endojs/endo#576
Agoric/agoric-sdk#5569