feat: Add deprecation notice for passing just an ID in. (#98)

* feat: Add deprecation notice for passing just an ID in.

fixes #97

lib/swapi-node.js

@@ -1,7 +1,7 @@
 'use strict';
 
 const request = require('request');
-const util = require('./util');
+const { deprecate, capitaliseFirstLetter } = require('./util');
 
 const BASE_URL = 'https://swapi.dev/api/';
 
@@ -35,7 +35,7 @@ function sendRequest (options) {
 
       Object.keys(jsonBody).forEach(value => {
         if (typeof jsonBody[value] !== 'function') {
-          jsonBody['get' + util.capitaliseFirstLetter(value)] = (() => {
+          jsonBody['get' + capitaliseFirstLetter(value)] = (() => {
             return () => {
               if (!Array.isArray(jsonBody[value])) {
                 if (jsonBody[value].includes(BASE_URL)) {
@@ -81,6 +81,8 @@ function parseOptions (options = {}) {
     return options;
   }
 
+  deprecate('Passing just an ID is deprecated.  Use object form { id }');
+
   return {
     id: options
   };

lib/util.js

@@ -1,7 +1,14 @@
 'use strict';
 
+function deprecate (message) {
+  console.log(`DEPRECATION NOTICE: ${message}`);
+}
+
+function capitaliseFirstLetter (string) {
+  return string.charAt(0).toUpperCase() + string.slice(1);
+}
+
 module.exports = {
-  capitaliseFirstLetter (string) {
-    return string.charAt(0).toUpperCase() + string.slice(1);
-  }
+  deprecate,
+  capitaliseFirstLetter
 };