TypeScript conversion so we have accurately generated types for consumers #398

Job	Run time
[email protected]	1m 30s
[email protected]	1m 26s
Lint	35s
[email protected]	1m 39s
[email protected]	1m 26s
typescript@next	1m 32s
Floating Dependencies (ubuntu-latest, chrome)	48s
Floating Dependencies (ubuntu-latest, firefox)	41s
Tests (ubuntu-latest, chrome, 16)	53s
Tests (ubuntu-latest, chrome, 18)	38s
Tests (ubuntu-latest, firefox, 16)	1m 4s
Tests (ubuntu-latest, firefox, 18)	1m 6s
Docs app	36s
Tests - ember-lts-3.28	1m 7s
Tests - ember-lts-4.4	1m 1s
Tests - ember-lts-4.12	1m 7s
Tests - ember-release	1m 10s
Tests - ember-beta	1m 1s
Tests - ember-classic	1m 20s
Tests - embroider-safe	20m 14s
Tests - embroider-optimized	20m 15s
Tests - ember-canary	1m 1s
	1h 2m 10s

Provide feedback