refactor(one-app-runner): use semver for app version comparison (#608)

* refactor(one-app-runner): use semver for app version comparison

* refactor(one-app-runner): add NOTE to comment

---------

Co-authored-by: Matthew Mallimo <matthew.c.mallimo@aexp.com>

packages/one-app-runner/__tests__/src/startApp.spec.js

@@ -411,6 +411,19 @@ Array [
       '--dns-result-order=ipv4first --no-experimental-fetch'
     );
   });
+
+  it('adds node flags when one-app version is greater than 5.13.0 and is a prerelease', async () => {
+    expect.assertions(1);
+    const mockSpawn = makeMockSpawn();
+    childProcess.spawn.mockImplementation(mockSpawn);
+    await startApp({
+      moduleMapUrl: 'https://example.com/module-map.json', rootModuleName: 'frank-lloyd-root', appDockerImage: 'one-app:5.14.0-rc1', modulesToServe: ['/path/to/module-a'],
+    });
+    expect(mockSpawn.calls[1].args[mockSpawn.calls[1].args.indexOf('-c') + 1]).toMatch(
+      '--dns-result-order=ipv4first --no-experimental-fetch'
+    );
+  });
+
   it('adds node flags when one-app version is greater than 5.13.0 but only major specified', async () => {
     expect.assertions(1);
     const mockSpawn = makeMockSpawn();

packages/one-app-runner/package.json

@@ -39,6 +39,7 @@
     "get-port": "^5.1.1",
     "node-fetch": "^2.6.1",
     "pkg-up": "^3.1.0",
+    "semver": "^7.6.0",
     "uuid": "^8.3.2",
     "yargs": "^16.2.0"
   },

packages/one-app-runner/src/startApp.js

@@ -17,6 +17,7 @@ const path = require('node:path');
 const fs = require('node:fs');
 const os = require('node:os');
 const Docker = require('dockerode');
+const semver = require('semver');
 
 async function spawnAndPipe(command, args, logStream) {
   return new Promise((resolve, reject) => {
@@ -131,19 +132,14 @@ const generateLogFormat = (logFormat) => (logFormat ? `--log-format=${logFormat}
 
 const generateDebug = (port, useDebug) => (useDebug ? `--inspect=0.0.0.0:${port}` : '');
 
-// Node 12 does not support --dns-result-order or --no-experimental-fetch
+// NOTE: Node 12 does not support --dns-result-order or --no-experimental-fetch
 // So we have to remove those flags if the one-app version is less than 5.13.0
 // 5.13.0 is when node 16 was introduced.
 const generateNodeFlags = (appVersion) => {
-  const versionArray = appVersion.split('.');
-  if (versionArray.length > 1) {
-    const majorVersion = Number.parseInt(versionArray[0], 10);
-    const minorVersion = Number.parseInt(versionArray[1], 10);
-    if (majorVersion === 5 && minorVersion < 13) {
-      return '';
-    }
+  if (semver.intersects(appVersion, '^5.13.0', { includePrerelease: true })) {
+    return '--dns-result-order=ipv4first --no-experimental-fetch';
   }
-  return '--dns-result-order=ipv4first --no-experimental-fetch';
+  return '';
 };
 
 module.exports = async function startApp({

yarn.lock

@@ -12270,6 +12270,13 @@ semver@^7.1.1, semver@^7.1.3, semver@^7.3.2, semver@^7.3.4, semver@^7.3.5, semve
   dependencies:
     lru-cache "^6.0.0"
 
+semver@^7.6.0:
+  version "7.6.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.6.0.tgz#1a46a4db4bffcccd97b743b5005c8325f23d4e2d"
+  integrity sha512-EnwXhrlwXMk9gKu5/flx5sv/an57AkRplG3hTK68W7FRDN+k+OWBj65M7719OkA82XLBxrcX0KSHj+X5COhOVg==
+  dependencies:
+    lru-cache "^6.0.0"
+
 serialize-javascript@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-4.0.0.tgz#b525e1238489a5ecfc42afacc3fe99e666f4b1aa"