fix ENAMETOOLONG

lib/images.ts

@@ -1,11 +1,13 @@
 import probe from 'probe-image-size'
 import { getCache, setCache } from '@lib/cache'
 
-import { createReadStream, createWriteStream, existsSync, mkdirSync } from 'fs'
+import { createReadStream, createWriteStream, existsSync } from 'fs'
 import { join } from 'path'
 import { processEnv } from '@lib/processEnv'
 import { promisify } from 'util'
 
+import { sha1 } from 'crypto-hash'
+
 const streamPipeline = promisify(require('stream').pipeline)
 
 /**
@@ -27,6 +29,13 @@ const maxRetries = 50
 const read_timeout = 3000 // ms
 const response_timeout = 3000 // ms
 
+const calcHash = async (input: ArrayBuffer | string) => await sha1(input)
+
+const genCacheKey = async (url: string, noCache?: boolean) => {
+  if (noCache) return null
+  return await calcHash(url)
+}
+
 export interface Dimensions {
   width: number
   height: number
@@ -35,7 +44,7 @@ export interface Dimensions {
 export const imageDimensions = async (url: string | undefined | null, noCache?: boolean): Promise<Dimensions | null> => {
   if (!url) return null
 
-  const cacheKey = (!noCache && encodeURIComponent(url)) || null
+  const cacheKey = await genCacheKey(url, noCache)
   const cached = getCache<Dimensions>(cacheKey)
   if (cached) return cached
 
@@ -81,7 +90,7 @@ export const imageDimensions = async (url: string | undefined | null, noCache?:
 export const imageDimensionsFromFile = async (file: string, noCache?: boolean) => {
   if (!file) return null
 
-  const cacheKey = (!noCache && encodeURIComponent(file)) || null
+  const cacheKey = await genCacheKey(file, noCache)
   const cached = getCache<Dimensions>(cacheKey)
   if (cached) return cached
 

package.json

@@ -42,6 +42,7 @@
     "@tryghost/content-api": "^1.5.1",
     "@types/refractor": "^3.0.0",
     "cheerio": "^1.0.0-rc.5",
+    "crypto-hash": "^1.3.0",
     "dayjs": "^1.10.4",
     "disqus-react": "^1.0.11",
     "email-validator": "^2.0.4",

yarn.lock

@@ -1169,6 +1169,11 @@ crypto-browserify@3.12.0, crypto-browserify@^3.11.0:
     randombytes "^2.0.0"
     randomfill "^1.0.3"
 
+crypto-hash@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/crypto-hash/-/crypto-hash-1.3.0.tgz#b402cb08f4529e9f4f09346c3e275942f845e247"
+  integrity sha512-lyAZ0EMyjDkVvz8WOeVnuCPvKVBXcMv1l5SVqO1yC7PzTwrD/pPje/BIRbWhMoPe436U+Y2nD7f5bFx0kt+Sbg==
+
 css-blank-pseudo@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/css-blank-pseudo/-/css-blank-pseudo-0.1.4.tgz#dfdefd3254bf8a82027993674ccf35483bfcb3c5"