add changes from v0.3

bin/genServiceWorker.js

@@ -0,0 +1,29 @@
+const path = require('path')
+const fs = require('fs-extra')
+const terser = require('terser')
+const swPrecache = require('sw-precache')
+const outputPath = path.resolve('public/sw.js')
+
+async function main() {
+  let sw = await fs.readFile(path.resolve('src/client/util/offlineFallback.js'))
+  sw = sw.toString()
+
+  sw += await swPrecache.generate({
+    cacheId: 'mykb-cache',
+    stripPrefixMulti: {
+      [path.resolve('public/')]: '',
+      [path.resolve('.next/static/')]: '/_next/static',
+    },
+    staticFileGlobs: ['public/!(sw.js)', '.next/static/**/*'].map(p =>
+      path.resolve(p)
+    ),
+  })
+  const precacheRegex = /var precacheConfig.*]];/
+  const precacheConfig = sw.match(precacheRegex)
+  sw = sw.replace(precacheRegex, '')
+  sw = precacheConfig[0] + sw
+  sw = terser.minify(sw).code
+
+  await fs.outputFile(outputPath, sw)
+}
+main()