Improve import scanning performance on app dev

[gonzaloriestra]

WHY are these changes introduced?

Fixes https://github.com/shop/issues-develop/issues/21853

WHAT is this pull request doing?

How to test your changes?

Post-release steps

Measuring impact

How do we know this change was effective? Please choose one:

• n/a - this doesn't need measurement, e.g. a linting rule or a bug-fix
• Existing analytics will cater for this addition
• PR includes analytics changes to measure impact

Checklist

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

[gonzaloriestra]

/snapit

[github-actions]

🫰✨ Thanks @gonzaloriestra! Your snapshot has been published to npm.

Test the snapshot by installing your package globally:

npm i -g --@shopify:registry=https://registry.npmjs.org @shopify/cli@0.0.0-snapshot-20260303123133

Caution

After installing, validate the version by running shopify version in your terminal.
If the versions don't match, you might have multiple global instances installed.
Use which shopify to find out which one you are running and uninstall it.

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	78.88%	14535/18427
🟡	Branches	73.18%	7229/9878
🟡	Functions	79.06%	3693/4671
🟡	Lines	79.22%	13739/17343

Test suite run success

3790 tests passing in 1450 suites.

Report generated by 🧪jest coverage report action from 9a2bc0c

[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/private/node/constants.d.ts

@@ -32,6 +32,7 @@ export declare const environmentVariables: {
     neverUsePartnersApi: string;
     skipNetworkLevelRetry: string;
     maxRequestTimeForNetworkCalls: string;
+    disableImportScanning: string;
 };
 export declare const defaultThemeKitAccessDomain = "theme-kit-access.shopifyapps.com";
 export declare const systemEnvironmentVariables: {

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

@@ -1,6 +1,12 @@
+/**
+ * Clears the import paths cache. Should be called when watched files change
+ * so that rescanning picks up updated imports.
+ */
+export declare function clearImportPathsCache(): void;
 /**
  * Extracts import paths from a source file.
  * Supports JavaScript, TypeScript, and Rust files.
+ * Results are cached per file path to avoid redundant I/O.
  *
  * @param filePath - Path to the file to analyze.
  * @returns Array of absolute paths to imported files.