fix: reduce bundle size (#28)

.gitignore

@@ -41,3 +41,4 @@ test/test-data/go-ipfs-repo/LOG.old
 
 # while testing npm5
 package-lock.json
+yarn.lock

package.json

@@ -44,21 +44,23 @@
   "dependencies": {
     "async": "^2.6.1",
     "interface-datastore": "~0.6.0",
-    "libp2p-crypto": "~0.15.0",
-    "lodash": "^4.17.11",
-    "pull-stream": "^3.6.9",
+    "libp2p-crypto": "~0.16.0",
+    "merge-options": "^1.0.1",
+    "node-forge": "~0.7.6",
+    "pull-stream": "^3.6.8",
     "sanitize-filename": "^1.6.1"
   },
   "devDependencies": {
-    "aegir": "^18.0.2",
+    "aegir": "^18.0.3",
     "chai": "^4.2.0",
-    "chai-string": "^1.5.0",
+    "chai-string": "^1.4.0",
     "datastore-fs": "~0.7.0",
     "datastore-level": "~0.10.0",
     "dirty-chai": "^2.0.1",
     "level-js": "^4.0.0",
     "mocha": "^5.2.0",
-    "peer-id": "~0.12.1",
+    "multihashes": "~0.4.14",
+    "peer-id": "~0.12.2",
     "rimraf": "^2.6.3"
   },
   "contributors": [

src/cms.js

@@ -1,7 +1,12 @@
 'use strict'
 
-const async = require('async')
-const forge = require('node-forge')
+const setImmediate = require('async/setImmediate')
+const series = require('async/series')
+const detect = require('async/detect')
+const waterfall = require('async/waterfall')
+require('node-forge/lib/pkcs7')
+require('node-forge/lib/pbe')
+const forge = require('node-forge/lib/forge')
 const util = require('./util')
 
 /**
@@ -39,13 +44,13 @@ class CMS {
    */
   encrypt (name, plain, callback) {
     const self = this
-    const done = (err, result) => async.setImmediate(() => callback(err, result))
+    const done = (err, result) => setImmediate(() => callback(err, result))
 
     if (!Buffer.isBuffer(plain)) {
       return done(new Error('Plain data must be a Buffer'))
     }
 
-    async.series([
+    series([
       (cb) => self.keychain.findKeyByName(name, cb),
       (cb) => self.keychain._getPrivateKey(name, cb)
     ], (err, results) => {
@@ -85,7 +90,7 @@ class CMS {
    * @returns {undefined}
    */
   decrypt (cmsData, callback) {
-    const done = (err, result) => async.setImmediate(() => callback(err, result))
+    const done = (err, result) => setImmediate(() => callback(err, result))
 
     if (!Buffer.isBuffer(cmsData)) {
       return done(new Error('CMS data is required'))
@@ -112,7 +117,7 @@ class CMS {
           keyId: r.issuer.find(a => a.shortName === 'CN').value
         }
       })
-    async.detect(
+    detect(
       recipients,
       (r, cb) => self.keychain.findKeyById(r.keyId, (err, info) => cb(null, !err && info)),
       (err, r) => {
@@ -124,7 +129,7 @@ class CMS {
           return done(err)
         }
 
-        async.waterfall([
+        waterfall([
           (cb) => self.keychain.findKeyById(r.keyId, cb),
           (key, cb) => self.keychain._getPrivateKey(key.name, cb)
         ], (err, pem) => {

src/keychain.js

@@ -2,12 +2,11 @@
 'use strict'
 
 const sanitize = require('sanitize-filename')
-const deepmerge = require('lodash/merge')
+const mergeOptions = require('merge-options')
 const crypto = require('libp2p-crypto')
 const DS = require('interface-datastore')
-const pull = require('pull-stream')
-const isString = require('lodash/isString')
-const isSafeInteger = require('lodash/isSafeInteger')
+const collect = require('pull-stream/sinks/collect')
+const pull = require('pull-stream/pull')
 const CMS = require('./cms')
 
 const keyPrefix = '/pkcs8/'
@@ -32,7 +31,7 @@ const defaultOptions = {
 
 function validateKeyName (name) {
   if (!name) return false
-  if (!isString(name)) return false
+  if (typeof name !== 'string') return false
   return name === sanitize(name.trim())
 }
 
@@ -107,8 +106,7 @@ class Keychain {
     }
     this.store = store
 
-    const opts = {}
-    deepmerge(opts, defaultOptions, options)
+    const opts = mergeOptions(defaultOptions, options)
 
     // Enforce NIST SP 800-132
     if (!opts.passPhrase || opts.passPhrase.length < 20) {
@@ -186,11 +184,11 @@ class Keychain {
       return _error(callback, `Invalid key name '${name}'`)
     }
 
-    if (!isString(type)) {
+    if (typeof type !== 'string') {
       return _error(callback, `Invalid key type '${type}'`)
     }
 
-    if (!isSafeInteger(size)) {
+    if (!Number.isSafeInteger(size)) {
       return _error(callback, `Invalid key size '${size}'`)
     }
 
@@ -246,7 +244,7 @@ class Keychain {
     }
     pull(
       self.store.query(query),
-      pull.collect((err, res) => {
+      collect((err, res) => {
         if (err) return _error(callback, err)
 
         const info = res.map(r => JSON.parse(r.value))

src/util.js

@@ -1,6 +1,7 @@
 'use strict'
 
-const forge = require('node-forge')
+require('node-forge/lib/x509')
+const forge = require('node-forge/lib/forge')
 const pki = forge.pki
 exports = module.exports
 

test/browser.js

@@ -1,22 +1,22 @@
 /* eslint-env mocha */
 'use strict'
 
-const async = require('async')
+const series = require('async/series')
 const LevelStore = require('datastore-level')
 
 describe('browser', () => {
   const datastore1 = new LevelStore('test-keystore-1', { db: require('level-js') })
   const datastore2 = new LevelStore('test-keystore-2', { db: require('level-js') })
 
   before((done) => {
-    async.series([
+    series([
       (cb) => datastore1.open(cb),
       (cb) => datastore2.open(cb)
     ], done)
   })
 
   after((done) => {
-    async.series([
+    series([
       (cb) => datastore1.close(cb),
       (cb) => datastore2.close(cb)
     ], done)

test/node.js

@@ -4,7 +4,7 @@
 const os = require('os')
 const path = require('path')
 const rimraf = require('rimraf')
-const async = require('async')
+const series = require('async/series')
 const FsStore = require('datastore-fs')
 
 describe('node', () => {
@@ -14,14 +14,14 @@ describe('node', () => {
   const datastore2 = new FsStore(store2)
 
   before((done) => {
-    async.series([
+    series([
       (cb) => datastore1.open(cb),
       (cb) => datastore2.open(cb)
     ], done)
   })
 
   after((done) => {
-    async.series([
+    series([
       (cb) => datastore1.close(cb),
       (cb) => datastore2.close(cb),
       (cb) => rimraf(store1, cb),