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Angular v20 Migration Failure - ESM Compatibility Issue #30456

Closed as not planned
@jzs11

Description

@jzs11

Command

update

Is this a regression?

  • Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

Description
The Angular CLI v20 migration process fails when updating from Angular v19 to v20 due to ES Module compatibility issues with the ora package.

Additional Information
The error occurs during the optional migration for using the new application builder. The issue appears to be related to CommonJS/ESM compatibility in the dependency chain.

Attempted Solutions
None yet, seeking guidance on how to proceed with the update safely

Minimal Reproduction

Steps to Reproduce

  • Start with an Angular v19 project
  • Run ng update to check available updates
  • Run ng update @angular/cli @angular/core @angular/material angular-eslint
  • Observe the migration failure during the process

Exception or Error

✖ Migration failed: require() of ES Module /private/var/folders/xn/6r91mrqx6gd99whlb0dk1gvr0000gn/T/angular-cli-packages-GfYq84/node_modules/ora/index.js from /private/var/folders/xn/6r91mrqx6gd99whlb0dk1gvr0000gn/T/angular-cli-packages-GfYq84/node_modules/@angular-devkit/schematics/tasks/package-manager/executor.js not supported. Instead change the require of index.js in /private/var/folders/xn/6r91mrqx6gd99whlb0dk1gvr0000gn/T/angular-cli-packages-GfYq84/node_modules/@angular-devkit/schematics/tasks/package-manager/executor.js to a dynamic import() which is available in all CommonJS modules.

Your Environment

Angular CLI: 20.0.0
Node: 22.11.0
Package Manager: npm 11.3.0
OS: darwin arm64

Angular: 20.0.0
... animations, build, cli, common, compiler, compiler-cli, core
... forms, platform-browser, platform-browser-dynamic, router

Package                      Version
------------------------------------------------------
@angular-devkit/architect    0.2000.0
@angular-devkit/core         20.0.0
@angular-devkit/schematics   20.0.0
@angular/cdk                 20.0.1
@angular/material            20.0.1
@schematics/angular          20.0.0
ng-packagr                   20.0.0
rxjs                         7.8.2
typescript                   5.8.3

Anything else relevant?

No response

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