feat: generate typings (#473)

* feat: generate typings

* fix: do not change type of init

* chore: remove source map from repo

* chore: remove not needed type cast

* fix: rebuild package-lock.json with npm 6

* chore: reset CHANGELOG.md to master

.gitignore

@@ -3,9 +3,10 @@
 /.idea
 /mochawesome-report
 /.DS_Store
-/dist/cf-extension-api.js
-/dist/cf-extension-api.js.map
-typings.d.ts
+/dist
+!/dist/cf-extension.css
+!/dist/README.md
+!/dist/WARNING.txt
 /test/cypress/reports
 /test/cypress/videos
 /test/cypress/screenshots

lib/index.ts

@@ -1,9 +1,13 @@
 import createInitializer from './initialize'
 import createAPI from './api'
-import locations from './locations'
+import { KnownSDK } from './types'
 
-// `export = {}` to allow direct CommonJS `require()` instead of `require().default`
-export = {
-  init: createInitializer(window, createAPI),
-  locations,
-}
+export * from './types'
+export { default as locations } from './locations'
+
+type Init = <T extends KnownSDK = KnownSDK>(
+  initCallback: (sdk: T) => any,
+  options?: { supressIframeWarning?: boolean }
+) => void
+
+export const init = createInitializer(window, createAPI) as Init

lib/initialize.ts

@@ -40,8 +40,7 @@ Learn more about local development with the ui-extension-sdk here:
 
         let customApi
         if (typeof makeCustomApi === 'function') {
-          // Reason for the typecast: https://github.com/microsoft/TypeScript/issues/14889
-          customApi = (makeCustomApi as any)(channel, params)
+          customApi = makeCustomApi(channel, params)
         }
 
         // Handle pending incoming messages.