feat: update dev dependencies (#46)

BREAKING CHANGE: drops support for Node 6 and Node 8

Since the actual dependencies haven't been changed, it will probably still work for older Node versions, but the test suite won't support them anymore.

.travis.yml

@@ -1,7 +1,7 @@
 language: node_js
 node_js:
-   - "6"
-   - "8"
+   - "10"
+   - "12"
 before_script:
   - npm install coveralls mocha-lcov-reporter
 script: npm run test

cli.js

@@ -66,4 +66,4 @@ if (!program.args.length) {
     .catch(console.error)
 }
 
-updateNotifier({pkg}).notify()
+updateNotifier({ pkg }).notify()

index.js

@@ -56,7 +56,7 @@ class KinesisStreamReader extends Readable {
     const whitelist = ['ShardIteratorType', 'Timestamp', 'StartingSequenceNumber']
     const shardIteratorOptions = Object.keys(this.options)
       .filter((x) => whitelist.indexOf(x) !== -1)
-      .reduce((result, key) => Object.assign(result, {[key]: this.options[key]}), {})
+      .reduce((result, key) => Object.assign(result, { [key]: this.options[key] }), {})
     return getShardId(this.client, this.streamName)
       .then((shardIds) => {
         const shardIterators = shardIds.map((shardId) =>
@@ -91,7 +91,7 @@ class KinesisStreamReader extends Readable {
       data.Records.forEach((x) => {
         let record = this.options.parser(x.Data)
         if (this.options.unzip) {
-            record = zlib.gunzipSync(Buffer.from(record, 'base64')).toString()
+          record = zlib.gunzipSync(Buffer.from(record, 'base64')).toString()
         }
         if (this.options.newLine) {
           record += '\n'