console: allow Object.prototype fields as labels #563
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LGTM! |
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| // Verify that Object.prototype properties can be used as labels | ||
| assert.doesNotThrow(function () { | ||
| console.time('__proto__'); |
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did this actually throw?
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No. It returns NaN like I noted in the commit log :-/. Will update the test.
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@vkurchatkin updated the test. PTAL |
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LGTM |
| if (!time) { | ||
| throw new Error('No such label: ' + label); | ||
| } | ||
| var duration = Date.now() - time; | ||
| let duration = Date.now() - time; |
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I'm generally -0 on replacing var with let unless there's a distinct need for block-scoping.
Edit: This is a non-blocking nit. It would make me feel better if these remained vars, though.
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@chrisdickinson changed the |
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I'll just leave it here: http://www.reddit.com/r/javascript/comments/1sgsmj/let_var_die/ |
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If we are going to switch, I think it most reasonable to only change lines that we are already editing. |
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@vkurchatkin I'm in the camp of being as restrictive as possible, which I think |
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The test should still fail for console._times = Object.create(null);
console.time('__proto__'); // => console._times.__proto__ = Date.now();
console.timeEnd('__proto__'); // throws
console._times.__proto__ === null; // true |
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@pluma seems to work fine with the latest iojs code. |
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@cjihrig Interesting. Is this related to the newer version of V8 being used? |
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@pluma that would be my guess - I see the same behavior in the Chrome console. |
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Hm, odd. I guess the semantics of |
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Is anyone opposed to this landing? Another alternative would be to use a |
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+1 for landing, and also +1 for experimenting with |
Console.prototype.timeEnd() returns NaN if the timer label corresponds to a property on Object.prototype. This commit uses a Map to construct the _times object.
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@rvagg updated to use a |
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love it! |
| @@ -21,7 +21,7 @@ function Console(stdout, stderr) { | |||
| Object.defineProperty(this, '_stdout', prop); | |||
| prop.value = stderr; | |||
| Object.defineProperty(this, '_stderr', prop); | |||
| prop.value = {}; | |||
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It might be better (perf-wise) to just replace this with { __proto__: null } or Object.create(null)
Console.prototype.timeEnd() returns NaN if the timer label corresponds to a property on Object.prototype. This commit uses a Map to construct the _times object. Fixes: nodejs/node-v0.x-archive#9069 PR-URL: #563 Reviewed-By: Vladimir Kurchatkin <[email protected]> Reviewed-By: Chris Dickinson <[email protected]> Reviewed-By: Rod Vagg <[email protected]>
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Landed in 3cbb5cd |
Console.prototype.timeEnd()returnsNaNif the timer label corresponds to a property onObject.prototype. This commit usesObject.create(null)to construct the_timesobject. See nodejs/node-v0.x-archive#9069