Add support to omit params on all token exchange methods (omit)

lib/client/auth-code.js

@@ -42,7 +42,7 @@ module.exports = (config) => {
    *                                     that represents the application privileges
    * @return {Promise}
    */
-  async function getToken(params) {
+  async function getToken(params = {}) {
     const baseParams = {
       grant_type: 'authorization_code',
     };

lib/client/client.js

@@ -16,7 +16,7 @@ module.exports = (config) => {
    *                                     that represents the application privileges
    * @return {Promise}
    */
-  async function getToken(params) {
+  async function getToken(params = {}) {
     const baseParams = {
       grant_type: 'client_credentials',
     };

lib/client/password.js

@@ -18,7 +18,7 @@ module.exports = (config) => {
    *                                     that represents the application privileges
    * @return {Promise}
    */
-  async function getToken(params) {
+  async function getToken(params = {}) {
     const baseParams = {
       grant_type: 'password',
     };

package.json

@@ -44,13 +44,13 @@
     "credentials"
   ],
   "dependencies": {
-    "@hapi/joi": "^16.1.5",
+    "@hapi/joi": "^16.1.7",
     "@hapi/wreck": "^15.1.0",
     "date-fns": "^2.4.1",
     "debug": "^4.1.1"
   },
   "devDependencies": {
-    "@hapi/boom": "^7.4.11",
+    "@hapi/boom": "^8.0.1",
     "ava": "^2.4.0",
     "chance": "^1.1.0",
     "chance-access-token": "^1.0.1",
@@ -59,7 +59,7 @@
     "eslint-config-airbnb-base": "^14.0.0",
     "eslint-plugin-import": "^2.9.0",
     "lodash": "^4.17.15",
-    "nock": "^11.3.5",
+    "nock": "^11.3.6",
     "nyc": "^14.1.1"
   },
   "license": "Apache-2.0"

test/auth-code.js

@@ -396,6 +396,24 @@ test.serial('@getToken => resolves to an access token with a custom grant type',
   t.deepEqual(token, getAccessToken());
 });
 
+test.serial('@getToken => resolves to an access token with no params', async (t) => {
+  const expectedRequestParams = {
+    grant_type: 'authorization_code',
+  };
+
+  const scopeOptions = getHeaderCredentialsScopeOptions();
+  const server = createAuthorizationServer('https://authorization-server.org:443');
+  const scope = server.tokenSuccess(scopeOptions, expectedRequestParams);
+
+  const config = createModuleConfig();
+  const oauth2 = oauth2Module.create(config);
+
+  const token = await oauth2.authorizationCode.getToken();
+
+  scope.done();
+  t.deepEqual(token, getAccessToken());
+});
+
 test.serial('@getToken => rejects the operation when a non json response is received', async (t) => {
   const expectedRequestParams = {
     grant_type: 'authorization_code',

test/client.js

@@ -235,6 +235,24 @@ test.serial('@getToken => resolves to an access token with a custom grant type',
   t.deepEqual(token, getAccessToken());
 });
 
+test.serial('@getToken => resolves to an access token with no params', async (t) => {
+  const expectedRequestParams = {
+    grant_type: 'client_credentials',
+  };
+
+  const scopeOptions = getHeaderCredentialsScopeOptions();
+  const server = createAuthorizationServer('https://authorization-server.org:443');
+  const scope = server.tokenSuccess(scopeOptions, expectedRequestParams);
+
+  const config = createModuleConfig();
+  const oauth2 = oauth2Module.create(config);
+
+  const token = await oauth2.clientCredentials.getToken();
+
+  scope.done();
+  t.deepEqual(token, getAccessToken());
+});
+
 test.serial('@getToken => rejects the operation when a non json response is received', async (t) => {
   const expectedRequestParams = {
     grant_type: 'client_credentials',

test/password.js

@@ -254,6 +254,24 @@ test.serial('@getToken => resolves to an access token with a custom grant type',
   t.deepEqual(token, getAccessToken());
 });
 
+test.serial('@getToken => resolves to an access token with no params', async (t) => {
+  const tokenRequestParams = {
+    grant_type: 'password',
+  };
+
+  const scopeOptions = getHeaderCredentialsScopeOptions();
+  const server = createAuthorizationServer('https://authorization-server.org:443');
+  const scope = server.tokenSuccess(scopeOptions, tokenRequestParams);
+
+  const config = createModuleConfig();
+  const oauth2 = oauth2Module.create(config);
+
+  const token = await oauth2.ownerPassword.getToken();
+
+  scope.done();
+  t.deepEqual(token, getAccessToken());
+});
+
 test.serial('@getToken => rejects the operation when a non json response is received', async (t) => {
   const tokenRequestParams = {
     grant_type: 'password',