Enable strict mode

Author: vweevers

client.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const levelup = require('levelup')
 const encode = require('encoding-down')
 const leveldown = require('./leveldown')

index.js

@@ -1,2 +1,4 @@
+'use strict'
+
 exports.server = require('./server')
 exports.client = require('./client')

leveldown.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const duplexify = require('duplexify')
 const abstract = require('abstract-leveldown')
 const util = require('util')

matchdown.js

@@ -1,3 +1,5 @@
+'use strict'
+
 module.exports = function matchdown (db, type) {
   // Skip layers that we handle ourselves
   if (type === 'levelup') return false

server.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const lpstream = require('length-prefixed-stream')
 const eos = require('end-of-stream')
 const duplexify = require('duplexify')

streams.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const pbs = require('pbs')
 const fs = require('fs')
 const path = require('path')