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binding to a builtin name fails cryptically #510
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Sorry, that's definitely a head scratcher. We should probably throw a warning for cases like this.
I believe it's part of the Console API (
console.dir): https://developer.chrome.com/devtools/docs/console-api#consoledirobject'dir' specifies directionality ('rtl' or 'auto') for HTMLElement:
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement.dirOn Tue, May 20, 2014 at 9:17 AM, Eric Bidelman notifications@github.comwrote:
Sorry, that's definitely a head scratcher. We should probably throw a
warning for cases like this.I believe it's part of the Console API (console.dir):
https://developer.chrome.com/devtools/docs/console-api#consoledirobject—
Reply to this email directly or view it on GitHubhttps://github.com//issues/510#issuecomment-43647828
.Edit: removed. I may be wrong.
Removed previous comment, I probably misdiagnosed the issue.
Not TemplateBinding, rather polymer-expressions.
Thanks for the quick triage.
Closing since the root cause (googlearchive/polymer-expressions#33) has been fixed.
Example:
<template repeat="{{dir in [1, 2, 3]}}">{{dir}}</template> => 333
I scratched my head on this one for a very long time before I realized that dir() is some kind of special value, at least in Chrome.
Apologies for the imprecision, I don't know the status of "dir" in Javascript, i.e. is it just in Chrome, is it a builtin? Nevertheless, it exhibits this really unfortunate behavior.
Is is possible to detect such uses, or to make them work as intended?
http://jsbin.com/polojite/1/edit