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util: set super_ property to non-enumerable #23107

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util: set super_ property to non-enumerable #23107

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BridgeAR
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Using util.inherits() adds a super_ property to the constructor
and inspecting that constructor is going to show that property even
though it's not useful for the user.

Therefore the property is now set as non-enumerable and such entries
are not visible by default when using console.log() or
util.inspect().

This significantly reduces the amount of data shown when inspecting streams.

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • tests and/or benchmarks are included
  • documentation is changed or added
  • commit message follows commit guidelines

@BridgeAR
util: set super_ property to non-enumerable
b39109b 
Using `util.inherits()` adds a `super_` property to the constructor
and inspecting that constructor is going to show that property even
though it's not useful for the user.

Therefore the property is now set as non-enumerable and such entries
are not visible by default when using `console.log()` or
`util.inspect()`.
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@BridgeAR build started: https://ci.nodejs.org/blue/organizations/jenkins/node-test-pull-request-lite-pipeline/detail/node-test-pull-request-lite-pipeline/1030/pipeline

@nodejs-github-bot nodejs-github-bot added the util Issues and PRs related to the built-in util module. label Sep 26, 2018
@BridgeAR BridgeAR added the semver-major PRs that contain breaking changes and should be released in the next major version. label Sep 26, 2018
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@nodejs/tsc PTAL

@BridgeAR BridgeAR added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Sep 26, 2018
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CI https://ci.nodejs.org/job/node-test-pull-request/17458/

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Rebuild arm: https://ci.nodejs.org/job/node-test-commit-arm-fanned/3808/
Rebuild commit-linux https://ci.nodejs.org/job/node-test-commit-linux/21890/

mcollina
mcollina reviewed Sep 27, 2018
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Can you please show the output before/after this PR?

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Before:

> net
{ _createServerHandle: [Function: createServerHandle],
  _normalizeArgs: [Function: normalizeArgs],
  _setSimultaneousAccepts: [Function: _setSimultaneousAccepts],
  connect: [Function: connect],
  createConnection: [Function: connect],
  createServer: [Function: createServer],
  isIP: [Function: isIP],
  isIPv4: [Function: isIPv4],
  isIPv6: [Function: isIPv6],
  Server:
   { [Function: Server]
     super_:
      { [Function: EventEmitter]
        EventEmitter: [Circular],
        usingDomains: true,
        defaultMaxListeners: [Getter/Setter],
        init: [Function],
        listenerCount: [Function] } },
  Socket:
   { [Function: Socket] super_: { [Function: Duplex] super_: [Function] } },
  Stream:
   { [Function: Socket] super_: { [Function: Duplex] super_: [Function] } } }

After:

> net
{ _createServerHandle: [Function: createServerHandle],
  _normalizeArgs: [Function: normalizeArgs],
  _setSimultaneousAccepts: [Function: _setSimultaneousAccepts],
  connect: [Function: connect],
  createConnection: [Function: connect],
  createServer: [Function: createServer],
  isIP: [Function: isIP],
  isIPv4: [Function: isIPv4],
  isIPv6: [Function: isIPv6],
  Server: [Function: Server],
  Socket: [Function: Socket],
  Stream: [Function: Socket] }

mcollina
mcollina approved these changes Sep 27, 2018
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LGTM.

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BridgeAR commented Sep 27, 2018 •
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Rebuild arm again https://ci.nodejs.org/job/node-test-commit-arm-fanned/3811/ 🚫
Rebuild commit-linux again https://ci.nodejs.org/job/node-test-commit-linux/21893/ ✔️

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BridgeAR commented Sep 28, 2018 •
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I can not start arm-fanned again, so here's a complete rebuild:

CI https://ci.nodejs.org/job/node-test-pull-request/17493/ ✔️

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BridgeAR commented Oct 1, 2018

Landed in 5e6940d.

@BridgeAR BridgeAR closed this Oct 1, 2018
BridgeAR added a commit to BridgeAR/node that referenced this pull request Oct 1, 2018
@BridgeAR
util: set super_ property to non-enumerable
5e6940d 
Using `util.inherits()` adds a `super_` property to the constructor
and inspecting that constructor is going to show that property even
though it's not useful for the user.

Therefore the property is now set as non-enumerable and such entries
are not visible by default when using `console.log()` or
`util.inspect()`.

PR-URL: nodejs#23107
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Jeremiah Senkpiel <[email protected]>
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: James M Snell <[email protected]>
@BridgeAR BridgeAR deleted the hide-super branch January 20, 2020 11:42
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@targos targos targos approved these changes

@Fishrock123 Fishrock123 Fishrock123 approved these changes

@addaleax addaleax addaleax approved these changes

@jasnell jasnell jasnell approved these changes

@mcollina mcollina mcollina approved these changes

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@BridgeAR @nodejs-github-bot @mcollina @jasnell @addaleax @Fishrock123 @targos