docs-util: created docblock-generator tool (#6096)

docs-util/packages/docblock-generator/src/commands/run-git-changes.ts

@@ -0,0 +1,40 @@
+import path from "path"
+import DocblockGenerator from "../classes/docblock-generator.js"
+import getMonorepoRoot from "../utils/get-monorepo-root.js"
+import promiseExec from "../utils/promise-exec.js"
+import filterFiles from "../utils/filter-files.js"
+
+export default async function runGitChanges() {
+  const monorepoPath = getMonorepoRoot()
+  // retrieve the changed files under `packages` in the monorepo root.
+  const childProcess = await promiseExec(
+    `git diff --name-only -- "packages/**/**.ts" "packages/**/*.js" "packages/**/*.tsx" "packages/**/*.jsx"`,
+    {
+      cwd: monorepoPath,
+    }
+  )
+
+  let files = filterFiles(
+    childProcess.stdout.toString().split("\n").filter(Boolean)
+  )
+
+  if (!files.length) {
+    console.log(`No file changes detected.`)
+    return
+  }
+
+  console.log(
+    `${files.length} files have changed. Running generator on them...`
+  )
+
+  files = files.map((filePath) => path.resolve(monorepoPath, filePath))
+
+  // generate docblocks for each of the files.
+  const docblockGenerator = new DocblockGenerator({
+    paths: files,
+  })
+
+  await docblockGenerator.run()
+
+  console.log(`Finished generating docs for ${files.length} files.`)
+}