Issue found in node_modules/@angular/material/core/option/optgroup.d.ts: Line 17: Class '_MatOptgroupBase' does not correctly implement interface 'CanDisable'. The property 'disabled' is missing in type '_MatOptgroupBase', which is required in type 'CanDisable'.
17 export declare class _MatOptgroupBase extends _MatOptgroupMixinBase implements CanDisable {
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Found in node_modules/@angular/material/core/common-behaviors/disabled.d.ts: Line 12,
Property 'disabled' as a boolean has been declared here.
Error in node_modules/@angular/material/button/button.d.ts:
Line 22: Class 'MatButton' does not properly implement the interface 'CanColor'.
The type 'MatButton' lacks properties such as color and defaultColor, which are required in type 'CanColor'.
22 export declare class MatButton extends _MatButtonMixinBase implements AfterViewInit, OnDestroy, CanDisable, CanColor, CanDisableRipple, FocusableOption {
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Another error in line 22 of node_modules/@angular/material/button/button.d.ts:
The Class 'MatButton' fails to fully implement the interface 'CanDisable'.
The property 'disabled' is missing in type 'MatButton', but it is mandatory according to 'CanDisable' interface.</p>