Fixes #15178 PR #11499 introduced a way to deal with all-white canvas, but newer Firefox versions set random data instead. This PR detects whether canvas operations are reliable by comparing the results on a hardcoded 2×2 pixels image, and memoizing the result. This should be both more reliable and faster than the previous check. |
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| javascript | ||
| lib | ||
| mailers | ||
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| presenters | ||
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| validators | ||
| views | ||
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