ci: Migrate runStoryboook test to GitHub

packages/components/.storybook/run.js

@@ -3,31 +3,26 @@ const { join } = require('path');
 const { promisify } = require('util');
 const exec = promisify(require('child_process').exec);
 
-const dependentPackages = ['components', 'models'];
-
-function isTag() {
-  return Boolean(process.env['TRAVIS_TAG']);
-}
+// Changes to these packages will not trigger a storybook run, because they are
+// downstream of this package.
+const nonDependencyPackages = ['cli', 'scanner'];
 
 async function isBranch(branch) {
-  let currentBranch = process.env['TRAVIS_BRANCH'];
-  if (!currentBranch) {
-    const { stdout } = await exec('git branch --show-current');
-    currentBranch = stdout.trim();
-  }
+  const { stdout } = await exec('git branch --show-current');
+  const currentBranch = stdout.trim();
 
   return currentBranch === branch;
 }
 
-async function hasDependencyChanged() {
+async function noDependencyChanged() {
   const fetchResult = await exec('git fetch origin main:refs/remotes/origin/main');
   if (fetchResult.stderr || fetchResult.stdout)
-    console.warn("output from 'git fetch origin main:refs/remotes/origin/main': ", fetchResult);
+    console.log("output from 'git fetch origin main:refs/remotes/origin/main': ", fetchResult);
 
   const { stdout: changedFiles } = await exec('git diff origin/main --name-only');
   return changedFiles
     .split('\n')
-    .some((file) => dependentPackages.some((pkg) => file.startsWith(join('packages', pkg))));
+    .every((file) => nonDependencyPackages.some((pkg) => file.startsWith(join('packages', pkg))));
 }
 
 async function runStorybook() {
@@ -51,9 +46,16 @@ function isWindows() {
 }
 
 (async () => {
-  const shouldRunStorybook =
-    !isWindows() && ((await isBranch('main')) || isTag() || (await hasDependencyChanged()));
-
+  const detectDependencyChanged = !(await noDependencyChanged());
+  const platformToTest = !isWindows();
+  const runningOnMainBranch = await isBranch('main');
+  console.log('Determining whether to run storybook.');
+  console.log(`Has dependency changed? ${detectDependencyChanged}`);
+  console.log(`Running on a platform we want to test? ${platformToTest}`);
+  console.log(`Running on main branch? ${runningOnMainBranch}`);
+
+  const shouldRunStorybook = platformToTest && (detectDependencyChanged || runningOnMainBranch);
+  console.log(`Should run storybook? ${shouldRunStorybook}`);
   if (shouldRunStorybook) {
     process.exitCode = await runStorybook();
   }