Merge pull request #20 from Kikobeats/footprint

feat: reduce library footprint

Author: Kikobeats

Diff for: README.md

@@ -149,7 +149,13 @@ If you don't provide one, this be used as fallback for avoid keep things into ca
 Type: `boolean`<br>
 Default: `false`
 
-Enable compress/decmpress data using brotli compression format.
+Enable compress/decompress data using brotli compression format.
+
+If you enable it, you need to an additional `iltorb` package:
+
+```bash
+npm install iltorb
+```
 
 ##### revalidate
 

Diff for: index.js

@@ -1,5 +1,6 @@
 'use strict'
 
+const createCompress = require('compress-brotli')
 const { resolve: urlResolve } = require('url')
 const normalizeUrl = require('normalize-url')
 const { parse } = require('querystring')
@@ -9,9 +10,7 @@ const assert = require('assert')
 const { URL } = require('url')
 const Keyv = require('keyv')
 
-const { decompress: brotliDecompress, compress: brotliCompress } = require('iltorb')
-
-const getEtag = data => computeEtag(typeof data === 'string' ? data : JSON.stringify(data))
+const getEtag = data => computeEtag(JSON.stringify(data))
 
 const getKey = url => {
   const { origin } = new URL(url)
@@ -45,7 +44,7 @@ const createSetHeaders = ({ revalidate }) => {
 
 module.exports = ({
   cache = new Keyv({ namespace: 'ssr' }),
-  compress = false,
+  compress: enableCompression = false,
   get,
   send,
   revalidate = ttl => ttl / 24,
@@ -58,6 +57,8 @@ module.exports = ({
     revalidate: typeof revalidate === 'function' ? revalidate : () => revalidate
   })
 
+  const { compress, decompress } = createCompress({ enable: enableCompression })
+
   return async ({ req, res, ...opts }) => {
     const hasForce = Boolean(req.query ? req.query.force : parse(req.url.split('?')[1]).force)
     const url = urlResolve('http://localhost', req.url)
@@ -67,8 +68,7 @@ module.exports = ({
     const hasData = cachedData !== undefined
     const isHit = !hasForce && hasData
 
-    const cachedResult =
-      compress && hasData ? JSON.parse(await brotliDecompress(cachedData)) : cachedData
+    const cachedResult = await decompress(cachedData)
 
     const { etag: cachedEtag, ttl = defaultTtl, createdAt = Date.now(), data, ...props } = isHit
       ? cachedResult
@@ -87,7 +87,7 @@ module.exports = ({
 
     if (!isHit) {
       const payload = { etag, createdAt, ttl, data, ...props }
-      const value = compress ? await brotliCompress(Buffer.from(JSON.stringify(payload))) : payload
+      const value = await compress(payload)
       await cache.set(key, value, ttl)
     }
 

Diff for: package.json

@@ -28,8 +28,8 @@
     "ssr"
   ],
   "dependencies": {
+    "compress-brotli": "~1.0.1",
     "etag": "~1.8.1",
-    "iltorb": "~2.4.2",
     "keyv": "~3.1.0",
     "normalize-url": "~4.3.0",
     "pretty-ms": "~4.0.0"
@@ -46,6 +46,7 @@
     "git-dirty": "latest",
     "got": "latest",
     "husky": "latest",
+    "iltorb": "latest",
     "lint-staged": "latest",
     "micro": "latest",
     "npm-check-updates": "latest",