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app_vue/node_modules/@vue/cli-service/lib/util/prepareURLs.js

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+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file at
+ * https://github.com/facebookincubator/create-react-app/blob/master/LICENSE
+ */
+
+const url = require('url')
+const { chalk } = require('@vue/cli-shared-utils')
+const address = require('address')
+const defaultGateway = require('default-gateway')
+
+module.exports = function prepareUrls (protocol, host, port, pathname = '/') {
+  const formatUrl = hostname =>
+    url.format({
+      protocol,
+      hostname,
+      port,
+      pathname
+    })
+  const prettyPrintUrl = hostname =>
+    url.format({
+      protocol,
+      hostname,
+      port: chalk.bold(port),
+      pathname
+    })
+
+  const isUnspecifiedHost = host === '0.0.0.0' || host === '::'
+  let prettyHost, lanUrlForConfig
+  let lanUrlForTerminal = chalk.gray('unavailable')
+  if (isUnspecifiedHost) {
+    prettyHost = 'localhost'
+    try {
+      // This can only return an IPv4 address
+      const result = defaultGateway.v4.sync()
+      lanUrlForConfig = address.ip(result && result.interface)
+      if (lanUrlForConfig) {
+        // Check if the address is a private ip
+        // https://en.wikipedia.org/wiki/Private_network#Private_IPv4_address_spaces
+        if (
+          /^10[.]|^172[.](1[6-9]|2[0-9]|3[0-1])[.]|^192[.]168[.]/.test(
+            lanUrlForConfig
+          )
+        ) {
+          // Address is private, format it for later use
+          lanUrlForTerminal = prettyPrintUrl(lanUrlForConfig)
+        } else {
+          // Address is not private, so we will discard it
+          lanUrlForConfig = undefined
+        }
+      }
+    } catch (_e) {
+      // ignored
+    }
+  } else {
+    prettyHost = host
+    lanUrlForConfig = host
+    lanUrlForTerminal = prettyPrintUrl(lanUrlForConfig)
+  }
+  const localUrlForTerminal = prettyPrintUrl(prettyHost)
+  const localUrlForBrowser = formatUrl(prettyHost)
+  return {
+    lanUrlForConfig,
+    lanUrlForTerminal,
+    localUrlForTerminal,
+    localUrlForBrowser
+  }
+}