Faster startup (2/4): Fire-and-forget hooks + process.exit(0)

[gonzaloriestra]

WHY are these changes introduced?

The CLI requires too much time to start working, it feels slow

WHAT is this pull request doing?

Runs the command first with exclusive CPU time, then fires prerun/postrun hooks as fire-and-forget after command completes. Calls process.exit(0) in bootstrap to avoid blocking on pending analytics/version-check network requests.

• Fire-and-forget hooks in runCommand: after the command finishes, prerun + postrun hooks run asynchronously without blocking the user
• process.exit(0) in bootstrap: forces exit after command completes so pending network I/O (analytics, upgrade checks) doesn't delay the prompt returning

Startup time: 570ms → 250ms (-56%)

How to test your changes?

• shopify version / shopify help return correct output faster
• shopify app dev still reports analytics (fire-and-forget, best-effort)
• No regression in command behavior

Measuring impact

• n/a - this doesn't need measurement, e.g. a linting rule or a bug-fix

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes

Made with Cursor

[gonzaloriestra]

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

• Faster startup (4/4): Lazy imports and V8 compile cache #7054
• Faster startup (3/4): Inline app-init and hydrogen-init hooks #7053
• Faster startup (2/4): Fire-and-forget hooks + process.exit(0) #7052 👈 (View in Graphite)
• Faster startup (1/4): Lazy command loading #7010 : 1 other dependent PR (#7015 )
• main

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

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟢	Statements	82.24%	15165/18439
🟡	Branches	74.54%	7461/10010
🟢	Functions	81.33%	3808/4682
🟢	Lines	82.62%	14339/17355

Test suite run success

4000 tests passing in 1531 suites.

Report generated by 🧪jest coverage report action from 4bad0ca

[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

packages/cli-kit/dist/public/node/custom-oclif-loader.d.ts

import { Command, Config } from '@oclif/core';
import { Options } from '@oclif/core/interfaces';
/**
 * Optional lazy command loader function.
 * If set, ShopifyConfig will use it to load individual commands on demand
 * instead of importing the entire COMMANDS module (which triggers loading all packages).
 */
export type LazyCommandLoader = (id: string) => Promise<typeof Command | undefined>;
export declare class ShopifyConfig extends Config {
    private lazyCommandLoader?;
    constructor(options: Options);
    /**
     * Set a lazy command loader that will be used to load individual command classes on demand,
     * bypassing the default oclif behavior of importing the entire COMMANDS module.
     *
     * @param loader - The lazy command loader function.
     */
    setLazyCommandLoader(loader: LazyCommandLoader): void;
    /**
     * Override runCommand to use lazy loading when available.
     * Instead of calling cmd.load() which triggers loading ALL commands via index.js,
     * we directly import only the needed command module.
     *
     * @param id - The command ID to run.
     * @param argv - The arguments to pass to the command.
     * @param cachedCommand - An optional cached command loadable.
     * @returns The command result.
     */
    runCommand<T = unknown>(id: string, argv?: string[], cachedCommand?: Command.Loadable | null): Promise<T>;
    customPriority(commands: Command.Loadable[]): Command.Loadable | undefined;
}

Existing type declarations

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

@@ -1,6 +1,8 @@
+import type { LazyCommandLoader } from './custom-oclif-loader.js';
 interface Options {
     moduleURL: string;
     argv?: string[];
+    lazyCommandLoader?: LazyCommandLoader;
 }
 /**
  * Launches the CLI.

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

@@ -1,3 +1,4 @@
+import type { LazyCommandLoader } from './custom-oclif-loader.js';
 /**
  * IMPORTANT NOTE: Imports in this module are dynamic to ensure that "setupEnvironmentVariables" can dynamically
  * set the DEBUG environment variable before the 'debug' package sets up its configuration when modules
@@ -7,6 +8,8 @@ interface RunCLIOptions {
     /** The value of import.meta.url of the CLI executable module */
     moduleURL: string;
     development: boolean;
+    /** Optional lazy command loader for on-demand command loading */
+    lazyCommandLoader?: LazyCommandLoader;
 }
 /**
  * A function that abstracts away setting up the environment and running
@@ -17,6 +20,7 @@ export declare function runCLI(options: RunCLIOptions & {
     runInCreateMode?: boolean;
 }, launchCLI?: (options: {
     moduleURL: string;
+    lazyCommandLoader?: LazyCommandLoader;
 }) => Promise<void>, argv?: string[], env?: NodeJS.ProcessEnv, versions?: NodeJS.ProcessVersions): Promise<void>;
 /**
  * A function for create-x CLIs that automatically runs the "init" command.
@@ -38,5 +42,5 @@ export declare const jsonFlag: {
 /**
  * Clear the CLI cache, used to store some API responses and handle notifications status
  */
-export declare function clearCache(): void;
+export declare function clearCache(): Promise<void>;
 export {};
\ No newline at end of file