Fix linting issues and ignore node_modules

Author: Paul Vecchio

.eslintignore

@@ -0,0 +1 @@
+node_modules

src/index.js

@@ -14,4 +14,4 @@ const cli = meow(`
   },
 })
 
-run(cli.input[0], cli.flags.ext)
+run(cli.input[0], cli.flags.ext)

src/lint-diff.js

@@ -32,15 +32,14 @@ import { getChangedLinesFromDiff } from './lib/git'
 const linter = new CLIEngine()
 const formatter = linter.getFormatter()
 
-
 const getChangedFiles = extensions => pipeWith(
   then,
   [
     commitRange => exec('git', ['diff', commitRange, '--name-only', '--diff-filter=ACMR']),
     prop('stdout'),
     split('\n'),
     filter(file => extensions.split(',').some(ext => endsWith(ext, file))),
-    map(path.resolve)
+    map(path.resolve),
   ]
 )
 
@@ -54,7 +53,7 @@ const getChangedFileLineMap = curry((commitRange, filePath) => pipeWith(
     getDiff(commitRange),
     getChangedLinesFromDiff,
     objOf('changedLines'),
-    assoc('filePath', filePath)
+    assoc('filePath', filePath),
   ]
 )(filePath))
 
@@ -139,7 +138,7 @@ const reportResults = pipe(
   ])
 )
 
-const run = (commitRange = 'HEAD', extensions='.js') => Promise.resolve(commitRange)
+const run = (commitRange = 'HEAD', extensions = '.js') => Promise.resolve(commitRange)
   .then(getChangedFiles(extensions))
   .map(getChangedFileLineMap(commitRange))
   .then(applyLinter)