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[M3] Checkbox MaterialStateBorderSide does not lerp correctly #118724
Description
A null operator is thrown in checkbox_theme.dart at this point -
static BorderSide? _lerpSides(BorderSide? a, BorderSide? b, double t) {
if (a == null && b == null) {
return null;
}
return BorderSide.lerp(a!, b!, t);
}
-because BorderSide.lerp immediately asserts that a and b are both non-null.
In M3, a MaterialStateBorderSide value can now be provided to the theme's side property, which causes this assertion to throw.
The _lerpSides method should be modified to return null when a == null || a == null, not &&.
Activity
github-actions commentedon Mar 4, 2023
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