Get certs (#24)

Exposes getCerts to use them with a web framework different from Express.js.
v4.3.0. Resolve #20. Update dependencies.

Author: daquinoaldo

README.md

@@ -64,8 +64,7 @@ npm i -s https-localhost
 ```
 Then put in your `index.js` file:
 ```javascript
-const httpsLocalhost = require("https-localhost")
-const app = httpsLocalhost()
+const app = require("https-localhost")()
 // app is an express app, do what you usually do with express
 app.listen(port)
 ```
@@ -76,6 +75,14 @@ app.listen(port)
 **Tip:** consider installing it as a dev dependency: this is not a production tool!  
 `npm i --save-dev https-localhost`
 
+#### Use with a web framework different from Express.js
+```javascript
+const httpsLocalhost = require("https-localhost")()
+// const app = ...
+// const port = 443
+const certs = await httpsLocalhost.getCerts()
+const server = https.createServer(certs, app).listen(port)
+```
 
 ## Production
 This tool has a production version that activates **HTTP/2**, **compression** and **minify**.

index.js

@@ -16,6 +16,9 @@ const createServer = () => {
   // create a server with express
   const app = express()
 
+  // add getCerts to app
+  app.getCerts = getCerts
+
   // override the default express listen method to use our server
   app.listen = async function(port = process.env.PORT ||
   /* istanbul ignore next: cannot be tested on Travis */ 443) {

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "https-localhost",
-  "version": "4.2.1",
+  "version": "4.3.0",
   "description": "HTTPS server running on localhost",
   "main": "index.js",
   "scripts": {
@@ -52,7 +52,7 @@
   },
   "devDependencies": {
     "coveralls": "^3.0.6",
-    "eslint": "^6.2.2",
+    "eslint": "^6.3.0",
     "eslint-config-standard": "^14.1.0",
     "eslint-plugin-import": "^2.18.2",
     "eslint-plugin-node": "^9.2.0",
@@ -61,6 +61,6 @@
     "mocha": "^6.2.0",
     "nyc": "^14.1.1",
     "pkg": "^4.4.0",
-    "sinon": "^7.4.1"
+    "sinon": "^7.4.2"
   }
 }

package.json

@@ -116,6 +116,16 @@ describe("Testing certs", function() {
       done()
     })()
   })
+
+  it("provides the certificate", function(done) {
+    // inner async function
+    (async() => {
+      const appCerts = await app.getCerts()
+      const realCerts = await certs.getCerts()
+      assert.deepStrictEqual(appCerts, realCerts)
+      done()
+    })()
+  })
 })
 
 // TESTS MODULE
@@ -283,7 +293,10 @@ describe("Testing redirect", () => {
 })
 
 // OTHER TESTS
-describe("Testing additional features", () => {
+describe("Testing additional features", function() {
+  // timeout 10 secs, since sometimes 3 secs are not sufficient
+  this.timeout(10000)
+
   it("is ready for production", function(done) {
     (async() => {
       // set NODE_ENV to production