fixed typescript definitions and added tests

.gitignore

@@ -35,6 +35,7 @@ node_modules
 # Build output
 lib
 !src/lib
+ts-output
 
 # IDE files
 .idea/

package.json

@@ -14,7 +14,10 @@
     "request": "^2.88.0"
   },
   "devDependencies": {
+    "@types/chai": "^4.1.7",
     "@types/express-jwt": "0.0.42",
+    "@types/mocha": "^5.2.7",
+    "@types/nock": "^10.0.3",
     "babel-cli": "^6.9.0",
     "babel-core": "^6.9.0",
     "babel-eslint": "^6.0.4",
@@ -32,13 +35,18 @@
     "passport": "^0.4.0",
     "passport-jwt": "^4.0.0",
     "rimraf": "^2.6.3",
-    "supertest": "^3.4.2"
+    "supertest": "^3.4.2",
+    "ts-node": "^8.2.0",
+    "typescript": "^3.5.1"
   },
   "scripts": {
     "clean": "rimraf lib/",
+    "clean:ts": "rimraf ts-output/",
     "compile": "babel -d lib/ src/",
     "prepublish": "npm run clean && npm run compile",
-    "test": "NODE_ENV=test mocha --require babel-core/register --exit --timeout 5000 $(find ./tests -name *.tests.js)",
+    "test:ts": "npm run clean:ts && tsc && NODE_ENV=test mocha --require babel-core/register --exit --timeout 5000 $(find ./ts-output -name *.tests.js)",
+    "test:js": "NODE_ENV=test mocha --require babel-core/register --exit --timeout 5000 $(find ./tests -name *.tests.js)",
+    "test": "npm run test:js && npm run test:ts",
     "test-watch": "NODE_ENV=test mocha --require babel-core/register --exit --timeout 5000 $(find ./tests -name *.tests.js) --watch",
     "release": "git tag $npm_package_version && git push && git push --tags && npm publish"
   },

tests/ts-definitions.tests.ts

@@ -0,0 +1,43 @@
+import nock from 'nock';
+import * as jwksRsaType from 'jwks-rsa';
+import {expect} from 'chai';
+const jwksRsa: typeof jwksRsaType = require('../src');
+
+describe('typescript definition', () => {
+  const jwksHost = 'http://my-authz-server';
+
+  const givenPublicCertOnAuthzServer = (kid: string, cert: string) => {
+    nock(jwksHost)
+    .get('/.well-known/jwks.json')
+    .reply(200, {
+      keys: [
+        {
+          alg: 'RS256',
+          kty: 'RSA',
+          use: 'sig',
+          x5c: [cert],
+          kid
+        }
+      ]
+    });
+  }
+
+  describe('hapiJwt2KeyAsync', () => {
+    it('should return a secret provider function', async () => {
+      givenPublicCertOnAuthzServer('someKeyId', 'pk1');
+
+      const secretProvider = jwksRsa.hapiJwt2KeyAsync({
+        jwksUri: `${jwksHost}/.well-known/jwks.json`
+      });
+      const { key } = await secretProvider({
+        header: {
+          'typ': 'JWT',
+          'alg': 'RS256',
+          'kid': 'someKeyId'
+        }
+      });
+
+      expect(key).to.contain('pk1');
+    });
+  });
+});

tsconfig.json

@@ -0,0 +1,24 @@
+{
+  "compileOnSave": false,
+  "compilerOptions": {
+    "forceConsistentCasingInFileNames": true,
+    "baseUrl": ".",
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "noEmit": false,
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitAny": true,
+    "noImplicitReturns": true,
+    "noImplicitThis": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "strictNullChecks": true,
+    "esModuleInterop": true,
+    "target": "es5",
+    "outDir": "ts-output"
+  },
+  "include": [
+    "index.d.ts",
+    "tests/**/*.tests.ts"
+  ]
+}