Hacks for Discourse to run this codemod on their plugins ❤️

package.json

@@ -52,6 +52,7 @@
     "cosmiconfig": "^8.1.3",
     "deepmerge-ts": "^4.3.0",
     "ember-codemods-telemetry-helpers": "^3.0.0",
+    "glob": "^8.1.0",
     "minimatch": "^7.4.6",
     "winston": "^3.8.2",
     "zod": "^3.21.4"
@@ -75,7 +76,6 @@
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-unicorn": "^46.0.0",
     "execa": "^5.1.1",
-    "glob": "^8.1.0",
     "jest": "^29.5.0",
     "prettier": "^2.8.8",
     "release-it": "^15.10.1",

transforms/helpers/options.ts

@@ -100,6 +100,8 @@ export const UserOptionsSchema = z.object({
   type: TypeSchema.describe(
     'Apply transformation to only passed type.'
   ).optional(),
+  moduleRoot: z.string().min(1).optional().describe('FIXME'),
+  packageBase: z.string().min(1).optional().describe('FIXME'),
 });
 
 export type UserOptions = z.infer<typeof UserOptionsSchema>;

transforms/helpers/runtime-data.ts

@@ -1,7 +1,12 @@
-import { getTelemetryFor } from 'ember-codemods-telemetry-helpers';
-import path from 'path';
+import {
+  getTelemetry,
+  getTelemetryFor,
+} from 'ember-codemods-telemetry-helpers';
+import { GlobSync } from 'glob';
+import path from 'node:path';
 import { z } from 'zod';
 import logger from './log-helper';
+import { type UserOptions } from './options';
 
 const RuntimeDataSchema = z.object({
   type: z.string().optional(),
@@ -18,8 +23,22 @@ export type RuntimeData = z.infer<typeof RuntimeDataSchema>;
  * Gets telemetry data for the file and parses it into a valid `RuntimeData`
  * object.
  */
-export function getRuntimeData(filePath: string): RuntimeData {
+export function getRuntimeData(
+  filePath: string,
+  { moduleRoot, packageBase }: UserOptions
+): RuntimeData {
   let rawTelemetry = getTelemetryFor(path.resolve(filePath));
+
+  // FIXME: use either moduleRoot or packageBase??
+  if (!rawTelemetry && moduleRoot && packageBase) {
+    const modulePath = getModulePathFor(path.resolve(filePath), {
+      moduleRoot,
+      packageBase,
+    });
+    const moduleKey = generateModuleKey(modulePath);
+    rawTelemetry = getTelemetry()[moduleKey];
+  }
+
   if (!rawTelemetry) {
     // Do not re-throw. The most likely reason this happened was because
     // the user's app threw an error. We still want the codemod to work if so.
@@ -50,3 +69,45 @@ class RuntimeDataError extends Error {
     this.name = 'RuntimeDataError';
   }
 }
+
+/**
+ * Transforms a literal "on disk" path to a "module path".
+ *
+ * @param filePath the path on disk (from current working directory)
+ * @returns The in-browser module path for the specified filePath
+ */
+function getModulePathFor(
+  filePath: string,
+  { moduleRoot, packageBase }: { moduleRoot: string; packageBase: string }
+): string {
+  const rootPaths = new GlobSync(`**/${packageBase}`, {
+    ignore: ['**/tmp/**', '**/node_modules/**'],
+    absolute: true,
+  }).found;
+
+  let bestMatch = '';
+  let relativePath;
+
+  for (const rootPath of rootPaths) {
+    if (filePath.startsWith(rootPath) && rootPath.length > bestMatch.length) {
+      bestMatch = rootPath;
+      relativePath = filePath.slice(
+        rootPath.length + 1 /* for slash */,
+        -path.extname(filePath).length
+      );
+    }
+  }
+
+  if (relativePath) {
+    return `${moduleRoot}/${relativePath}`;
+  }
+
+  // FIXME: Better error
+  throw new Error('Could not determine module path');
+}
+
+function generateModuleKey(modulePath: string): string {
+  const moduleKey = modulePath.replace('templates/components/', 'components/');
+  // If `templates/` still exists in the path then it wasn't a component but a controller-level template instead
+  return moduleKey.replace('templates/', 'controllers/');
+}

transforms/helpers/transform.ts

@@ -77,7 +77,7 @@ function _maybeTransformEmberObjects(
   } else {
     const options: Options = {
       ...userOptions,
-      runtimeData: getRuntimeData(filePath),
+      runtimeData: getRuntimeData(filePath, userOptions),
     };
 
     // eslint-disable-next-line unicorn/no-array-for-each

types/ember-codemods-telemetry-helpers.d.ts

@@ -1,4 +1,7 @@
 declare module 'ember-codemods-telemetry-helpers' {
   export function getTelemetryFor(filePath: string): unknown;
+  export function getTelemetry(
+    cacheKey?: string | undefined
+  ): Record<string, unknown>;
   export function setTelemetry(telemetry: unknown): void;
 }