feat: add HMR test suit

test/hmr.js

@@ -0,0 +1,73 @@
+// This is a manual playground for HMR Regexes
+const chalk = require('chalk')
+
+const HMRRegex = '(?!.*(__webpack_hmr|hot-update))'
+
+const CSNPublicPath = 'https://cdn.com'
+
+const regexes = {
+  // Regex for cacheFirst
+  cacheFirst: new RegExp(`/_nuxt/${HMRRegex}`),
+  cacheFirstCDN: new RegExp(`${CSNPublicPath}/${HMRRegex}`),
+
+  // Regex for networkFist
+  networkFirst: new RegExp(`^/${HMRRegex}`)
+}
+
+const lists = {
+  // URLs should be matched with cacheFirst
+  cacheFirst: [
+    '/_nuxt/foo.js',
+    '/_nuxt/foo/bar.json',
+    '/_nuxt/_bar/baz.134.png',
+    '/_nuxt/123.jpg?x=123'
+  ],
+
+  // CDN URLs
+  cdn: [
+    `${CSNPublicPath}/_nuxt/123.foo.js`,
+    `${CSNPublicPath}/bar/bar/123.js`
+  ],
+
+  // URLs should be matched with networkFirst
+  networkFirst: [
+    '/',
+    '/test.txt',
+    '/boo',
+    '/_foo/bar/baz',
+    '/foo/bar/baz/a.txt?y=123'
+  ],
+
+  // Webpack HMR URLs
+  webpack: [
+    '/__webpack_hmr',
+    '/__webpack_hmr/',
+    '/__webpack_hmr/client/chunk.json',
+    '/__webpack_hmr/client/chunk.123.json?a=123',
+    '/hot-update.json',
+    '/abc123def.hot-update.json',
+    '/_nuxt/hot-update.json',
+    '/_nuxt/abc123edf.hot-update.json',
+    '/_nuxt/foo/hot-hot-update.json',
+    '/_nuxt/foo/abc123def.hot-hot-update.json'
+  ]
+}
+
+const log = (msg, ok) => {
+  console.log(chalk[ok ? 'green' : 'red'](`${ok ? '✓' : '✕'} ${msg}`))
+}
+
+const allShouldMatch = (regexName, listName) => lists[listName].forEach(item => {
+  log(`${regexName} should match ${item}`, regexes[regexName].test(item))
+})
+
+const allShouldNotMatch = (regexName, listName) => lists[listName].forEach(item => {
+  log(`${regexName} should not match ${item}`, !regexes[regexName].test(item))
+})
+
+allShouldMatch('cacheFirst', 'cacheFirst')
+allShouldMatch('cacheFirstCDN', 'cdn')
+allShouldNotMatch('cacheFirst', 'webpack')
+
+allShouldMatch('networkFirst', 'networkFirst')
+allShouldNotMatch('networkFirst', 'webpack')