ci: add workflow to detect important file changes

.github/workflows/important-files-changed.yml

@@ -0,0 +1,12 @@
+name: Important files changed
+on:
+  pull_request:
+    types: [synchronize]
+
+jobs:
+  check_important_files_changes:
+    name: Check if any important files changed
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Check files changes
+        runs: ruby .github/bin/check-important-files-changed.rb

test.js

@@ -0,0 +1,88 @@
+const files = [
+  { filename: ".github/workflows/test.yml" },
+  { filename: "exercises/practice/anagram/.docs/instructions.md" },
+  { filename: "exercises/practice/bob/.meta/config.json" },
+  { filename: "exercises/practice/hello-world/hello-world.coffee" },
+  { filename: "exercises/practice/hexadecimal/hexadecimal.spec.coffee" },
+  { filename: "exercises/practice/binary/helper.coffee" },
+  { filename: "exercises/practice/accumulate/.docs/instructions.md" },
+  { filename: "exercises/practice/accumulate/accumulate.coffee" },
+  { filename: "exercises/practice/accumulate/accumulate.spec.coffee" },
+];
+
+const exerciseFiles = files.reduce((exerciseFiles, file) => {
+  const m = file.filename.match(
+    /^exercises\/(concept|practice)\/(?<slug>[^\/]+)\/(?<filename>.+)$/
+  );
+
+  if (m == null) return exerciseFiles;
+
+  const files = exerciseFiles.get(m.groups.slug) || [];
+  files.push(m.groups.filename);
+
+  exerciseFiles.set(m.groups.slug, files);
+  return exerciseFiles;
+}, new Map());
+
+configs = {
+  bob: {
+    files: {
+      solution: ["bob.coffee"],
+      test: ["bob.spec.coffee"],
+      example: [".meta/example.coffee"],
+    },
+  },
+  anagram: {
+    files: {
+      solution: ["anagram.coffee"],
+      test: ["anagram.spec.coffee"],
+      example: [".meta/example.coffee"],
+    },
+  },
+  "hello-world": {
+    files: {
+      solution: ["hello-world.coffee"],
+      test: ["hello-world.spec.coffee"],
+      example: [".meta/example.coffee"],
+    },
+  },
+  hexadecimal: {
+    files: {
+      solution: ["hexadecimal.coffee"],
+      test: ["hexadecimal.spec.coffee"],
+      example: [".meta/example.coffee"],
+    },
+  },
+  binary: {
+    files: {
+      solution: ["hexadecimal.coffee"],
+      test: ["hexadecimal.spec.coffee"],
+      example: [".meta/example.coffee"],
+      invalidator: ["helper.coffee"],
+    },
+  },
+  accumulate: {
+    files: {
+      solution: ["accumulate.coffee"],
+      test: ["accumulate.spec.coffee"],
+      example: [".meta/example.coffee"],
+    },
+  },
+};
+const x = Array.from(exerciseFiles.entries(), ([exercise, files]) => {
+  const exerciseConfig = configs[exercise];
+  return files.filter(
+    (file) =>
+      exerciseConfig.files.test.includes(file) ||
+      exerciseConfig.files.editor?.includes(file) ||
+      exerciseConfig.files.invalidator?.includes(file)
+  );
+})
+  .flat()
+  .sort();
+
+console.log(x);
+// for (const [exercise, files] of exerciseFiles) {
+
+//   console.log(exercise, importantFiles);
+// }