feat(icon): expose options.cacheDir

Author: pi0

docs/content/en/icon.md

@@ -59,3 +59,9 @@ purpose: 'maskable'
 ```
 
 More detail of "purpose": [https://w3c.github.io/manifest/#purpose-member](https://w3c.github.io/manifest/#purpose-member)
+
+
+**cacheDir**
+- Default: `{rootDir}/node_modules/.cache/icon`
+
+Cache dir for generated icons

lib/icon/module.js

@@ -1,5 +1,6 @@
 const path = require('path')
 const { fork } = require('child_process')
+const { join } = require('path')
 const fs = require('fs-extra')
 const hasha = require('hasha')
 const { joinUrl, getRouteParams, sizeName } = require('../utils')
@@ -36,6 +37,7 @@ async function run (pwa, _emitAssets) {
     fileName: 'icon.png',
     source: null,
     purpose: ['any', 'maskable'],
+    cacheDir: join(this.nuxt.options.rootDir, 'node_modules/.cache/pwa/icon'),
 
     targetDir: 'icons',
 
@@ -45,7 +47,6 @@ async function run (pwa, _emitAssets) {
     publicPath,
 
     _iconHash: null,
-    _cacheDir: null,
     _assets: null,
     _manifestIcons: null,
     _iosSplash: null
@@ -132,11 +133,6 @@ async function generateIcons (options) {
     options.iconHash = await hasha.fromFile(options.source).then(h => h.substring(0, 6))
   }
 
-  // Resize cache dir
-  if (!options.cacheDir) {
-    options.cacheDir = path.join(__dirname, '.cache', options.iconHash)
-  }
-
   // Icons to be emited by webpack
   options._assets = []
 
@@ -192,7 +188,7 @@ function emitAssets (options) {
           compiler.hooks.emit.tapPromise('nuxt-pwa-icon', async (compilation) => {
             await resizePromise
             await Promise.all(options._assets.map(async ({ name, target }) => {
-              const srcFileName = path.join(options._cacheDir, `${name}.png`)
+              const srcFileName = path.join(options.cacheDir, `${name}.png`)
               const src = await fs.readFile(srcFileName)
               compilation.assets[target] = { source: () => src, size: () => src.length }
             }))
@@ -207,20 +203,20 @@ async function resizeIcons (options) {
   const resizeOpts = JSON.stringify({
     version,
     input: options.source,
-    distDir: options._cacheDir,
+    distDir: options.cacheDir,
     sizes: [
       ...options.sizes,
       ...options.iosSizes
     ]
   })
 
-  const integrityFile = path.join(options._cacheDir, '.' + hasha(resizeOpts).substr(0, 8))
+  const integrityFile = path.join(options.cacheDir, '.' + hasha(resizeOpts).substr(0, 8))
 
   if (await fs.exists(integrityFile)) {
     return
   }
-  await fs.remove(options._cacheDir)
-  await fs.mkdirp(options._cacheDir)
+  await fs.remove(options.cacheDir)
+  await fs.mkdirp(options.cacheDir)
 
   await new Promise((resolve, reject) => {
     const child = fork(require.resolve('./resize'), [resizeOpts])