Migration to TS2.0

[agubler]

Dependant on dojo/shim#2

• Upgrade to TS2.0 (beta)
• Add strictNullChecks
• Add noImplicitThis

Fixes #147

[kitsonk]

Maybe we should add a comment here overall... because this is an odd array and has no documentation. Would NaN be appropriate here instead of -1?

[kitsonk]

There are two spaces here... I know, being pedantic.

[kitsonk]

Also for the record, I am currently getting:

src/async/iteration.ts(169,43): error TS2345: Argument of type '(i?: number | undefined) => T | Thenable<T> | undefined' is not assignable to parameter of type '((value?: number | undefined) => T | Thenable<T>) | undefined'.
  Type '(i?: number | undefined) => T | Thenable<T> | undefined' is not assignable to type '(value?: number | undefined) => T | Thenable<T>'.
    Type 'T | Thenable<T> | undefined' is not assignable to type 'T | Thenable<T>'.
      Type 'undefined' is not assignable to type 'T | Thenable<T>'.
src/async/iteration.ts(202,15): error TS2345: Argument of type '(result: { values: T[] | undefined; results: U[] | undefined; } | undefined) => U[] | null | unde...' is not assignable to parameter of type '((value?: { values: T[] | undefined; results: U[] | undefined; } | undefined) => U[] | Thenable<U...'.
  Type '(result: { values: T[] | undefined; results: U[] | undefined; } | undefined) => U[] | null | unde...' is not assignable to type '(value?: { values: T[] | undefined; results: U[] | undefined; } | undefined) => U[] | Thenable<U[]>'.
    Type 'U[] | null | undefined' is not assignable to type 'U[] | Thenable<U[]>'.
      Type 'null' is not assignable to type 'U[] | Thenable<U[]>'.

When doing a grunt on this branch.

[agubler]

@kitsonk if you remove the typings directory it should compile correctly, do you think we should clean the typings dir as part of the dev and dist tasks?

[kitsonk]

Ah, ok, but as far as cleaning typings, see dojo/grunt-dojo2#4 which has been open for a while, because it isn't the first time it has happened... 😭

[kitsonk]

👍

[agubler]

There are some test failure, fixing.

[agubler]

Unit tests failures fixed.