Use require for retrieving the adjust imports info

packages/compat/src/compat-app.ts

@@ -338,12 +338,12 @@ class CompatAppAdapter implements AppAdapter<TreeNames> {
       podModulePrefix: this.podModulePrefix(),
       options: this.options,
       activePackageRules: this.activeRules(),
-      adjustImportsOptionsFile: this.adjustImportsOptionsFile(),
+      adjustImportsOptionsPath: this.adjustImportsOptionsPath(),
     });
   }
 
   @Memoize()
-  adjustImportsOptionsFile(): string {
+  adjustImportsOptionsPath(): string {
     let file = join(this.root, '_adjust_imports.json');
     writeFileSync(file, JSON.stringify(this.adjustImportsOptions()));
     return file;

packages/compat/src/resolver.ts

@@ -22,7 +22,7 @@ import Options from './options';
 import { ResolvedDep } from '@embroider/core/src/resolver';
 import { dasherize } from './dasherize-component-name';
 import { makeResolverTransform } from './resolver-transform';
-import { pathExistsSync, readFileSync } from 'fs-extra';
+import { pathExistsSync } from 'fs-extra';
 import resolve from 'resolve';
 
 export interface ComponentResolution {
@@ -119,7 +119,7 @@ interface RehydrationParamsBase {
 }
 
 interface RehydrationParamsWithFile extends RehydrationParamsBase {
-  adjustImportsOptionsFile: string;
+  adjustImportsOptionsPath: string;
 }
 
 interface RehydrationParamsWithOptions extends RehydrationParamsBase {
@@ -201,8 +201,9 @@ export default class CompatResolver implements Resolver {
   @Memoize()
   get adjustImportsOptions(): AdjustImportsOptions {
     const { params } = this;
-    return 'adjustImportsOptionsFile' in params
-      ? JSON.parse(readFileSync(params.adjustImportsOptionsFile, 'utf8'))
+    return 'adjustImportsOptionsPath' in params
+      ? // eslint-disable-next-line @typescript-eslint/no-require-imports
+        require(params.adjustImportsOptionsPath)
       : params.adjustImportsOptions;
   }
 

packages/core/src/app.ts

@@ -111,7 +111,7 @@ export interface AppAdapter<TreeNames> {
   // compatibility
   adjustImportsOptions(): AdjustImportsOptions;
 
-  adjustImportsOptionsFile(): string;
+  adjustImportsOptionsPath(): string;
 
   // The template preprocessor plugins that are configured in the app.
   htmlbarsPlugins(): TemplateCompilerPlugins;
@@ -417,9 +417,14 @@ export class AppBuilder<TreeNames> {
         relocatedFiles[join(destPath, relativePath).split(sep).join('/')] = originalPath;
       }
     }
+    let relocatedFilesPath = join(this.root, '_relocated_files.json');
+    writeFileSync(relocatedFilesPath, JSON.stringify({ relocatedFiles }));
     return [
       require.resolve('./babel-plugin-adjust-imports'),
-      { adjustImportsOptionsFile: this.adapter.adjustImportsOptionsFile(), relocatedFiles },
+      {
+        adjustImportsOptionsPath: this.adapter.adjustImportsOptionsPath(),
+        relocatedFilesPath,
+      },
     ];
   }
 

packages/core/src/babel-plugin-adjust-imports.ts

@@ -3,7 +3,7 @@ import { join, dirname, resolve } from 'path';
 import type { NodePath } from '@babel/traverse';
 import type * as t from '@babel/types';
 import { PackageCache, Package, V2Package, explicitRelative } from '@embroider/shared-internals';
-import { outputFileSync, readFileSync } from 'fs-extra';
+import { outputFileSync } from 'fs-extra';
 import { Memoize } from 'typescript-memoize';
 import { compile } from './js-handlebars';
 import { handleImportDeclaration } from './mini-modules-polyfill';
@@ -14,8 +14,8 @@ interface State {
 }
 
 export interface DeflatedOptions {
-  adjustImportsOptionsFile: string;
-  relocatedFiles: { [relativePath: string]: string };
+  adjustImportsOptionsPath: string;
+  relocatedFilesPath: string;
 }
 
 type BabelTypes = typeof t;
@@ -348,7 +348,7 @@ export default function main(babel: unknown) {
       Program: {
         enter(path: NodePath<t.Program>, state: State) {
           let opts = ensureOpts(state);
-          state.adjustFile = new AdjustFile(path.hub.file.opts.filename, state.opts.relocatedFiles);
+          state.adjustFile = new AdjustFile(path.hub.file.opts.filename, opts.relocatedFiles);
           addExtraImports(t, path, opts.extraImports);
         },
         exit(path: NodePath<t.Program>, state: State) {
@@ -495,11 +495,9 @@ class AdjustFile {
 
 function ensureOpts(state: State): Options {
   let { opts } = state;
-  if ('adjustImportsOptionsFile' in opts) {
-    let inflated = JSON.parse(readFileSync(opts.adjustImportsOptionsFile, 'utf8'));
-    inflated.relocatedFiles = opts.relocatedFiles;
-    state.opts = inflated;
-    return inflated;
+  if ('adjustImportsOptionsPath' in opts) {
+    // eslint-disable-next-line @typescript-eslint/no-require-imports
+    return (state.opts = { ...require(opts.adjustImportsOptionsPath), ...require(opts.relocatedFilesPath) });
   }
   return opts;
 }