feat(dashboard,admin-vite-plugin,admin-bundler,admin-sdk): Rework admin extensions and introduce custom fields API (#9338)

packages/admin/admin-vite-plugin/src/widgets/generate-widget-hash.ts

@@ -0,0 +1,59 @@
+import fs from "fs/promises"
+import { File, parse, ParseResult, traverse } from "../babel"
+import { logger } from "../logger"
+import {
+  generateHash,
+  getConfigObjectProperties,
+  getParserOptions,
+} from "../utils"
+import { getWidgetFilesFromSources } from "./helpers"
+
+export async function generateWidgetHash(
+  sources: Set<string>
+): Promise<string> {
+  const files = await getWidgetFilesFromSources(sources)
+  const contents = await Promise.all(files.map(getWidgetContents))
+  const totalContent = contents
+    .flatMap(({ config, defaultExport }) => [config, defaultExport])
+    .filter(Boolean)
+    .join("")
+
+  return generateHash(totalContent)
+}
+
+async function getWidgetContents(
+  file: string
+): Promise<{ config: string | null; defaultExport: string | null }> {
+  const code = await fs.readFile(file, "utf-8")
+  let ast: ParseResult<File>
+
+  try {
+    ast = parse(code, getParserOptions(file))
+  } catch (e) {
+    logger.error(
+      `An error occurred while parsing the file. Due to the error we cannot validate whether the widget has changed. If your changes aren't correctly reflected try restarting the dev server.`,
+      {
+        file,
+        error: e,
+      }
+    )
+    return { config: null, defaultExport: null }
+  }
+
+  let configContent: string | null = null
+  let defaultExportContent: string | null = null
+
+  traverse(ast, {
+    ExportNamedDeclaration(path) {
+      const properties = getConfigObjectProperties(path)
+      if (properties) {
+        configContent = code.slice(path.node.start!, path.node.end!)
+      }
+    },
+    ExportDefaultDeclaration(path) {
+      defaultExportContent = code.slice(path.node.start!, path.node.end!)
+    },
+  })
+
+  return { config: configContent, defaultExport: defaultExportContent }
+}