Turn on noImplicitAny in the TS config

[sindresorhus]

When sindresorhus/is#9 is done.

[sindresorhus]

We can do this now.

[sindresorhus]

Current blockers:

source/index.ts(34,37): error TS7017: Element implicitly has an 'any' type because type 'Predicate<any>' has no index signature.

34  for (const {validator, message} of predicate[validatorSymbol]) {
                                       ~~~~~~~~~~~~~~~~~~~~~~~~~~


source/lib/operators/not.ts(16,3): error TS7017: Element implicitly has an 'any' type because type 'Predicate<any>' has no index signature.

16  	predicate[validatorSymbol].push(validator);
    	~~~~~~~~~~~~~~~~~~~~~~~~~~


source/lib/predicates/array.ts(1,26): error TS7016: Could not find a declaration file for module 'lodash.isequal'. '/Users/sindresorhus/dev/todo/ow/node_modules/lodash.isequal/index.js' implicitly has an 'any' type.
  Try `npm install @types/lodash.isequal` if it exists or add a new declaration (.d.ts) file containing `declare module 'lodash.isequal';`

1 import * as isEqual from 'lodash.isequal';
                           ~~~~~~~~~~~~~~~~


source/lib/predicates/predicate.ts(24,24): error TS7017: Element implicitly has an 'any' type because type 'typeof is' has no index signature.

24  		validator: value => is[type](value)
    		                    ~~~~~~~~


source/lib/predicates/string.ts(1,27): error TS7016: Could not find a declaration file for module 'vali-date'. '/Users/sindresorhus/dev/todo/ow/node_modules/vali-date/index.js' implicitly has an 'any' type.
  Try `npm install @types/vali-date` if it exists or add a new declaration (.d.ts) file containing `declare module 'vali-date';`

1 import * as valiDate from 'vali-date';