stream: fix Writable subclass instanceof checks
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2a4b068 introduced a regression in where checking `instanceof` would fail for `Writable` subclasses inside the subclass constructor, i.e. before `Writable()` was called. Also, calling `null instanceof Writable` or `undefined instanceof Writable` would fail due to accessing the `_writableState` property of the target object. This fixes these problems. Ref: nodejs#8834 (comment)
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CI: https://ci.nodejs.org/job/node-test-commit/5601/ /cc @nodejs/streams |
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/cc @mcollina |
mcollina
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Oct 14, 2016
| value: function(object) { | ||
| if (realHasInstance.call(this, object)) | ||
| return true; | ||
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how does this affect LazyTransform?
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@mcollina It works fine (otherwise there are failing tests). LazyTransform is only affected by the conditional in the Writable constructor, and that’s left unchanged here,
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can you update the comment below and maybe move it to the constructor then.
Fishrock123
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Oct 14, 2016
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Is this good to land? |
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LGTM |
1 similar comment
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LGTM |
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Landing before the 48h minimum so we can get a non-broken version of v6 out |
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Landed in 7922830 |
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2a4b068 introduced a regression in where checking `instanceof` would fail for `Writable` subclasses inside the subclass constructor, i.e. before `Writable()` was called. Also, calling `null instanceof Writable` or `undefined instanceof Writable` would fail due to accessing the `_writableState` property of the target object. This fixes these problems. PR-URL: #9088 Ref: #8834 (comment) Reviewed-By: Ilkka Myller <[email protected]> Reviewed-By: Jeremiah Senkpiel <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Evan Lucas <[email protected]>
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2a4b068 introduced a regression in where checking `instanceof` would fail for `Writable` subclasses inside the subclass constructor, i.e. before `Writable()` was called. Also, calling `null instanceof Writable` or `undefined instanceof Writable` would fail due to accessing the `_writableState` property of the target object. This fixes these problems. PR-URL: #9088 Ref: #8834 (comment) Reviewed-By: Ilkka Myller <[email protected]> Reviewed-By: Jeremiah Senkpiel <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Evan Lucas <[email protected]>
evanlucas
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2a4b068 introduced a regression in where checking `instanceof` would fail for `Writable` subclasses inside the subclass constructor, i.e. before `Writable()` was called. Also, calling `null instanceof Writable` or `undefined instanceof Writable` would fail due to accessing the `_writableState` property of the target object. This fixes these problems. PR-URL: #9088 Ref: #8834 (comment) Reviewed-By: Ilkka Myller <[email protected]> Reviewed-By: Jeremiah Senkpiel <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Evan Lucas <[email protected]>
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2a4b068 introduced a regression in where checking `instanceof` would fail for `Writable` subclasses inside the subclass constructor, i.e. before `Writable()` was called. Also, calling `null instanceof Writable` or `undefined instanceof Writable` would fail due to accessing the `_writableState` property of the target object. This fixes these problems. PR-URL: #9088 Ref: #8834 (comment) Reviewed-By: Ilkka Myller <[email protected]> Reviewed-By: Jeremiah Senkpiel <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Evan Lucas <[email protected]>
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* build: Fix building with shared zlib. (Bradley T. Hughes) [#9077](nodejs/node#9077) * stream: fix `Writable` subclass instanceof checks (Anna Henningsen) [#9088](nodejs/node#9088) * timers: fix regression with clearImmediate() (Brian White) [#9086](nodejs/node#9086) Signed-off-by: Ilkka Myller <[email protected]>
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* build: Fix building with shared zlib. (Bradley T. Hughes) [#9077](nodejs/node#9077) * stream: fix `Writable` subclass instanceof checks (Anna Henningsen) [#9088](nodejs/node#9088) * timers: fix regression with clearImmediate() (Brian White) [#9086](nodejs/node#9086) Signed-off-by: Ilkka Myller <[email protected]>
This was referenced Nov 30, 2023
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Checklist
make -j8 test(UNIX), orvcbuild test nosign(Windows) passesAffected core subsystem(s)
stream
Description of change
2a4b068 introduced a regression in where checking
instanceofwould fail forWritablesubclasses inside the subclass constructor, i.e. beforeWritable()was called.Also, calling
null instanceof Writableorundefined instanceof Writablewould fail due to accessing the_writableStateproperty of the target object.This fixes these problems.
Ref: #8834 (comment)