Setup docker to produce visual regression tests for linux on non-linux hosts

devEnv/tsconfig.json

@@ -4,7 +4,7 @@
     "outDir": "dist",
     "lib": ["ESNext", "DOM"],
     "rootDir": ".",
-    "types": ["node"],
+    "types": ["node", "jest"],
     "noEmit": true,
     "target": "es6",
     "composite": true

devEnv/verify-docker-compose.test.ts

@@ -0,0 +1,57 @@
+import * as fs from 'fs'
+import * as path from 'path'
+import * as yaml from 'yaml'
+
+describe(`Docker-compose`, () => {
+  test(`should exclude all node_modules folders`, () => {
+    const dockerComposeFile = fs.readFileSync(
+      path.join(__dirname, '../docker-compose.yml'),
+      {encoding: 'utf8'},
+    )
+
+    const yamlContent = yaml.parse(dockerComposeFile)
+    const dockerVolumes = yamlContent.services['node'].volumes
+    const dockerVolumesThatExludeNodeModules = dockerVolumes.filter(
+      (volume: string) => volume.includes('node_modules'),
+    )
+
+    const allFoldersToExclude = findAllNodejsFoldersAt(
+      path.join(__dirname, '..'),
+    ).map((fullPath) => {
+      return path.join(
+        '/app',
+        path.relative(path.join(__dirname, '..'), fullPath),
+      )
+    })
+
+    const missingExclusions = allFoldersToExclude.filter(
+      (folder) => !dockerVolumesThatExludeNodeModules.includes(folder),
+    )
+
+    if (missingExclusions.length > 0) {
+      throw new Error(
+        `Some node_modules folders are not excluded from docker-compose.yml. You should add them
+        to the voluems section of the node service:\n${missingExclusions
+          .map((s) => '- ' + s)
+          .join('\n')}`,
+      )
+    }
+  })
+})
+
+function findAllNodejsFoldersAt(dir: string): string[] {
+  const files = fs.readdirSync(dir)
+  const found: string[] = []
+  for (const file of files) {
+    if (file === 'package.json') {
+      found.push(path.join(dir, 'node_modules'))
+    } else if (file !== 'node_modules') {
+      const filePath = path.join(dir, file)
+      const stats = fs.statSync(filePath)
+      if (stats.isDirectory()) {
+        found.push(...findAllNodejsFoldersAt(filePath))
+      }
+    }
+  }
+  return found
+}