issue-1 - Added babel runtime to dependencies in order to return prom…

…ises when the nev does not support them. Added ability to decrypt multiple env vars at once using kms

.babelrc

@@ -1,5 +1,8 @@
 {
     "presets": [
         "es2015"
+    ],
+    "plugins": [
+        "transform-runtime"
     ]
 }

package.json

@@ -22,7 +22,9 @@
   },
   "author": "Aaron Williams <a@aceew.me>",
   "license": "ISC",
-  "dependencies": {},
+  "dependencies": {
+    "babel-runtime": "^6.6.1"
+  },
   "devDependencies": {
     "ava": "^0.17.0",
     "aws-sdk": "^2.7.22",

src/index.js

@@ -53,6 +53,31 @@ export default class LambdaEnvVars {
       .then(result => this.setEncryptedVariable(variableName, result));
   }
 
+  /**
+   * Decrypts a list of environment variables and returns them in an object where the keys are the
+   * env variable keys and the names are the decrypted values.
+   *
+   * @param {string[]} variableNames
+   * An array of environment variable keys to decrypt.
+   *
+   * @return {Promise}
+   * A promise that resolves an object containing the decrypted values where the keys are the items
+   * specified in the params variableNames.
+   */
+  getCustomDecryptedValueList(variableNames = []) {
+    const decryptedVariablesObject = {};
+
+    const decryptedValuePromiseList = variableNames.map(envVar => (
+      this.getCustomDecryptedValue(envVar)
+        .then((decryptedValue) => {
+          decryptedVariablesObject[envVar] = decryptedValue;
+        })
+    ));
+
+    return Promise.all(decryptedValuePromiseList)
+      .then(() => decryptedVariablesObject);
+  }
+
   /**
    * Sets the environment variable to the decryptedVariable object so it is cached per container.
    *

test/index.js

@@ -92,3 +92,28 @@ test('Setting a decrypted variable', (t) => {
   const result = lambdaEnvVars.setEncryptedVariable(variableKey, value);
   t.is(result, value);
 });
+
+test('Decrypting list of env vars returns a promise that resolves the values', (t) => {
+  const keys = ['keyName1', 'keyName2'];
+  keys.forEach((keyName) => {
+    lambdaEnvVars.process.env[keyName] = 'Some value';
+  });
+
+  return lambdaEnvVars.getCustomDecryptedValueList(keys)
+    .then((resultObject) => {
+      t.is(typeof resultObject, 'object');
+
+      keys.forEach((keyName) => {
+        t.is(resultObject[keyName], decryptedValueStub);
+        delete lambdaEnvVars.process.env[keyName];
+      });
+    });
+});
+
+test('Decrypting list of env vars when an empty array is specified, returns empty object', t => (
+  lambdaEnvVars.getCustomDecryptedValueList()
+    .then((result) => {
+      t.is(typeof result, 'object');
+      t.is(Object.keys(result).length, 0);
+    })
+));

yarn.lock

@@ -880,6 +880,13 @@ babel-runtime@^6.0.0, babel-runtime@^6.11.6, babel-runtime@^6.18.0, babel-runtim
     core-js "^2.4.0"
     regenerator-runtime "^0.10.0"
 
+babel-runtime@^6.6.1:
+  version "6.22.0"
+  resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.22.0.tgz#1cf8b4ac67c77a4ddb0db2ae1f74de52ac4ca611"
+  dependencies:
+    core-js "^2.4.0"
+    regenerator-runtime "^0.10.0"
+
 babel-template@^6.14.0, babel-template@^6.15.0, babel-template@^6.16.0, babel-template@^6.7.0, babel-template@^6.8.0:
   version "6.16.0"
   resolved "https://registry.yarnpkg.com/babel-template/-/babel-template-6.16.0.tgz#e149dd1a9f03a35f817ddbc4d0481988e7ebc8ca"