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[BUG] Violation warnings in verbose level chrome dev tools logging

See original GitHub issue

Expected Behavior

Expect Chart.js to not cause logs in dev console

Current Behavior

touchstart and touchend event listeners log verbose level [Violation] messages (see below).

Possible Solution

addEventListener can now take a map {"passive": "true"} see the MDN entry

Steps to Reproduce (for bugs)

Go to the unedited codepen: https://codepen.io/pen?template=JXVYzq
Open chrome dev tools console and set log level to verbose
Refresh page
See verbose log in console: [Violation] Added non-passive event listener to a scroll-blocking 'touchstart' event. Consider marking event handler as 'passive' to make the page more responsive. Chart.bundle.min.js:14

Context

It’s helpful to have verbose logging turned on in development because chrome will warn you when javascript execution locks up the browser. Having Chart.js warnings comingled with application logs reduces signal to noise.

Environment

Chart.js version: tried in 2.0/2.5/2.6
Browser name and version: Chrome OSX Version 58.0.3029.110 (64-bit)

Issue Analytics

State:
Created 6 years ago
Reactions:4
Comments:6 (2 by maintainers)

Top GitHub Comments

2reactions

burkacommented, Aug 31, 2017

When will this be released? It seems like quite a long time between that fix and the release…

0reactions

simonbrunelcommented, Sep 1, 2017

Very soon: #4706

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