perf: convert synchronous fs calls to async in production code

[alfonso-noriega]

WHY are these changes introduced?

Fixes #0000

WHAT is this pull request doing?

How to test your changes?

Post-release steps

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes
• I've considered analytics changes to measure impact
• The change is user-facing, so I've added a changelog entry with pnpm changeset add

[alfonso-noriega]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• perf: convert synchronous fs calls to async in production code #7288 👈 (View in Graphite)
• refactor: replace unsafe 'as any' casts with proper types in cli-kit #7287
• refactor: extract config parsing and metadata logging from loader.ts #7286
• refactor: split app.test-data.ts into domain-specific modules #7285
• refactor: replace JSON round-trip with explicit deepStripUndefined utility #7284
• fix: add error handling to empty catch blocks #7283
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[github-actions]

Differences in type declarations

We detected differences in the type declarations generated by Typescript for this branch compared to the baseline ('main' branch). Please, review them to ensure they are backward-compatible. Here are some important things to keep in mind:

• Some seemingly private modules might be re-exported through public modules.
• If the branch is behind main you might see odd diffs, rebase main into this branch.

New type declarations

We found no new type declarations in this PR

Existing type declarations

packages/cli-kit/dist/public/common/object.d.ts

@@ -84,4 +84,12 @@ export declare function isEmpty(object: object): boolean;
  * @param object - The object whose undefined will be deleted.
  * @returns A copy of the object with the undefined elements deleted.
  */
-export declare function compact(object: object): object;
\ No newline at end of file
+export declare function compact(object: object): object;
+/**
+ * Recursively removes properties with  values from an object.
+ * Arrays are traversed but not filtered. Non-object values are returned as-is.
+ *
+ * @param value - The value to strip undefined fields from.
+ * @returns A deep copy of the value with all undefined-valued keys removed.
+ */
+export declare function deepStripUndefined<T>(value: T): T;
\ No newline at end of file

packages/cli-kit/dist/public/node/node-package-manager.d.ts

@@ -60,10 +60,6 @@ export declare class FindUpAndReadPackageJsonNotFoundError extends BugError {
 export declare function packageManagerFromUserAgent(env?: NodeJS.ProcessEnv): PackageManager;
 /**
  * Returns the dependency manager used in a directory.
- * Walks upward from  so workspace packages (e.g. )
- * still resolve to the repo root lockfile ().
- * If no lockfile is found, it falls back to the package manager from the user agent.
- * If the package manager from the user agent is unknown, it returns 'npm'.
  * @param fromDirectory - The starting directory
  * @returns The dependency manager
  */

packages/cli-kit/dist/public/node/upgrade.d.ts

@@ -28,14 +28,11 @@ export declare function versionToAutoUpgrade(): string | undefined;
 export declare function warnIfUpgradeAvailable(): Promise<void>;
 /**
  * Generates a message to remind the user to update the CLI.
- * For major version bumps, appends a link to the GitHub release notes so users
- * can review breaking changes before deciding to upgrade.
  *
  * @param version - The version to update to.
- * @param isMajor - Whether the version bump is a major version change.
  * @returns The message to remind the user to update the CLI.
  */
-export declare function getOutputUpdateCLIReminder(version: string, isMajor?: boolean): string;
+export declare function getOutputUpdateCLIReminder(version: string): string;
 /**
  * Prompts the user to enable or disable automatic upgrades, then persists their choice.
  *

packages/cli-kit/dist/private/node/ui/components/DangerousConfirmationPrompt.d.ts

@@ -1,4 +1,3 @@
-import { InlineToken, TokenItem } from './TokenizedText.js';
 import { InfoTableProps } from './Prompts/InfoTable.js';
 import { AbortSignal } from '../../../../public/node/abort.js';
 import { FunctionComponent } from 'react';
@@ -6,7 +5,6 @@ export interface DangerousConfirmationPromptProps {
     message: string;
     confirmation: string;
     infoTable?: InfoTableProps['table'];
-    warningItem?: TokenItem<InlineToken>;
     onSubmit: (value: boolean) => void;
     abortSignal?: AbortSignal;
 }