Add types for confi/types

- Adds the folder test-d/ to contain the types
- we are using tsd to check the types
- Added a test:types script to package.json
- Apparently we need a root index.d.ts for tsd to work
  tsdjs/tsd#32 (comment)

package.json

@@ -75,6 +75,7 @@
     "yup": "^0.27.0"
   },
   "scripts": {
+    "test:types": "yarn run tsd",
     "start": "react-scripts start",
     "build": "react-scripts build",
     "test": "TZ=UTC react-scripts test --env=jest-environment-jsdom-sixteen",
@@ -84,6 +85,9 @@
     "test:coverage": "set CI=true && react-scripts test --coverage",
     "coveralls": "set CI=true && yarn test --runInBand --verbose --coverage=true --forceExit --detectOpenHandles && cat ./coverage/lcov.info | coveralls"
   },
+  "tsd": {
+    "directory": "src/test-d"
+  },
   "jest": {
     "collectCoverageFrom": [
       "src/**/*.{ts,tsx}",

src/test-d/types.test.ts

@@ -0,0 +1,48 @@
+import * as React from 'react';
+import { expectAssignable, expectType } from 'tsd';
+import {
+  adminLayerColorsType,
+  ADMN0_PCODE,
+  EmptyObject,
+  FlexComponent,
+  GREEN_THRESHOLD,
+  JurisdictionTypes,
+  ORANGE_THRESHOLD,
+  YELLOW_THRESHOLD,
+} from '../configs/types';
+
+expectType<EmptyObject>({});
+
+expectType<GREEN_THRESHOLD>(0.9);
+expectType<YELLOW_THRESHOLD>(0.2);
+expectType<ORANGE_THRESHOLD>(0.8);
+
+expectAssignable<ADMN0_PCODE>('TH');
+expectAssignable<ADMN0_PCODE>('ZM');
+expectAssignable<ADMN0_PCODE>('ra Zambia');
+expectAssignable<ADMN0_PCODE>('NA');
+expectAssignable<ADMN0_PCODE>('BW');
+expectAssignable<ADMN0_PCODE>('Chadiza');
+expectAssignable<ADMN0_PCODE>('Sinda');
+expectAssignable<ADMN0_PCODE>('Katete');
+expectAssignable<ADMN0_PCODE>('Siavonga');
+expectAssignable<ADMN0_PCODE>('Lop Buri');
+expectAssignable<ADMN0_PCODE>('Oddar Meanchey Province');
+expectAssignable<ADMN0_PCODE>('Lusaka');
+
+expectAssignable<adminLayerColorsType>('black');
+expectAssignable<adminLayerColorsType>('red');
+expectAssignable<adminLayerColorsType>('orange');
+expectAssignable<adminLayerColorsType>('yellow');
+expectAssignable<adminLayerColorsType>('green');
+
+expectAssignable<JurisdictionTypes>('administrative');
+expectAssignable<JurisdictionTypes>('operational');
+
+class SampleComponent extends React.Component<{}> {
+  public render() {
+    return null;
+  }
+}
+
+expectAssignable<FlexComponent<{}>>(SampleComponent);

tsconfig.json

@@ -15,5 +15,5 @@
     "noEmit": true,
     "jsx": "preserve"
   },
-  "include": ["src"]
-}
+  "include": ["src", "index.d.ts"]
+}