chore: require just functions needed from lodash (#865)

License: MIT
Signed-off-by: Alan Shaw <alan.shaw@protocol.ai>

Author: Alan Shaw

src/files/stat.js

@@ -1,7 +1,8 @@
 'use strict'
 
 const promisify = require('promisify-es6')
-const _ = require('lodash')
+const mapKeys = require('lodash/mapKeys')
+const kebabCase = require('lodash/kebabCase')
 
 const transform = function (data, callback) {
   callback(null, {
@@ -23,7 +24,7 @@ module.exports = (send) => {
       opts = {}
     }
 
-    opts = _.mapKeys(opts, (v, k) => _.kebabCase(k))
+    opts = mapKeys(opts, (v, k) => kebabCase(k))
 
     send.andTransform({
       path: 'files/stat',

src/pin/ls.js

@@ -1,7 +1,7 @@
 'use strict'
 
 const promisify = require('promisify-es6')
-const _ = require('lodash')
+const keys = require('lodash/keys')
 
 module.exports = (send) => {
   return promisify((hash, opts, callback) => {
@@ -28,7 +28,7 @@ module.exports = (send) => {
       if (err) {
         return callback(err)
       }
-      callback(null, _.keys(res.Keys).map(hash => (
+      callback(null, keys(res.Keys).map(hash => (
         { hash, type: res.Keys[hash].Type }
       )))
     })