[Nx 12.3]: Angular 12 and TypeScript 4.2+ support

[NathanWalker]

Latest Nx 12.3 sets up Angular 12 and TypeScript 4.2.

[NathanWalker]

Right now with TS 4.2 the following compilation errors occur:

Error: libs/xplat/utils/src/lib/objects.ts:14:35 - error TS7053: Element implicitly has an 'any' type because expression of type 'string' can't be used to index type 'unknown'.
  No index signature with a parameter of type 'string' was found on type 'unknown'.

14       if (typeof value !== typeof source[key]) {
                                     ~~~~~~~~~~~

Error: libs/xplat/utils/src/lib/objects.ts:16:23 - error TS7053: Element implicitly has an 'any' type because expression of type 'string' can't be used to index type 'unknown'.
  No index signature with a parameter of type 'string' was found on type 'unknown'.

16         result[key] = source[key];
                         ~~~~~~~~~~~

Error: libs/xplat/utils/src/lib/objects.ts:18:40 - error TS7053: Element implicitly has an 'any' type because expression of type 'string' can't be used to index type 'unknown'.
  No index signature with a parameter of type 'string' was found on type 'unknown'.

18         result[key] = deepMerge(value, source[key]);
                                          ~~~~~~~~~~~

Error: libs/xplat/utils/src/lib/objects.ts:20:23 - error TS7053: Element implicitly has an 'any' type because expression of type 'string' can't be used to index type 'unknown'.
  No index signature with a parameter of type 'string' was found on type 'unknown'.

20         result[key] = source[key];
                         ~~~~~~~~~~~

Error: libs/xplat/utils/src/lib/platform.ts:5:13 - error TS7005: Variable 'NSObject' implicitly has an 'any' type.

5 declare var NSObject, NSString, android, java, window;
              ~~~~~~~~

Error: libs/xplat/utils/src/lib/platform.ts:5:23 - error TS7005: Variable 'NSString' implicitly has an 'any' type.

5 declare var NSObject, NSString, android, java, window;
                        ~~~~~~~~

Error: libs/xplat/utils/src/lib/platform.ts:5:33 - error TS7005: Variable 'android' implicitly has an 'any' type.

5 declare var NSObject, NSString, android, java, window;
                                  ~~~~~~~

Error: libs/xplat/utils/src/lib/platform.ts:5:42 - error TS7005: Variable 'java' implicitly has an 'any' type.

5 declare var NSObject, NSString, android, java, window;39m
                                           ~~~~

Error: libs/xplat/utils/src/lib/platform.ts:5:48 - error TS7005: Variable 'window' implicitly has an 'any' type.

5 declare var NSObject, NSString, android, java, window;

[alpha2k-io]

any thoughts on when this would be addressed?