[georgianastasov]

Related to #1847

Description

Enhances ig update with automatic CLI version selection and temporary execution, ensuring updates can run using a newer compatible igniteui-cli without requiring users to manually upgrade their global CLI installation.

When updating packages in React or Web Components projects, the CLI checks whether a newer compatible version is available and temporarily uses it to perform the update.

Key changes:

• CLI version selection: Prefers the appropriate project-local CLI and checks npm for a newer compatible version, considering Node.js requirements.
• Temporary CLI execution: Installs the selected CLI version in an isolated temporary directory, forwards the original command, and cleans up afterward.
• Explicit version requests: Supports selecting the CLI major version through requests such as ig update igniteui-cli@17.
• Safe fallback: Continues with the current CLI when version checks fail, including offline or unavailable registry scenarios.
• Reliable execution: Preserves exit codes, handles installation failures, and prevents stale npm cache issues.
• Analytics: Avoids duplicate analytics events when execution is delegated to a temporary CLI.

The implementation reuses existing npm utilities and preserves the current behavior for Angular, other frameworks, and commands unrelated to ig update.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Refactoring / code cleanup
• Build / CI configuration change

Affected Packages

• igniteui-cli (packages/cli)
• @igniteui/cli-core (packages/core)
• @igniteui/angular-templates (packages/igx-templates)
• @igniteui/angular-schematics (packages/ng-schematics)
• @igniteui/mcp-server (packages/igniteui-mcp)

Checklist

• I have tested my changes locally (npm run test)
• I have built the project successfully (npm run build)
• I have run the linter (npm run lint)
• I have added/updated tests as needed
• My changes do not introduce new warnings or errors

Additional Context

• Automated tests: 1015 executed, 0 failures, 2 existing pending specs.
• Manual E2E: Validated on Windows using an isolated npm registry with CLI 16.0.0 → 16.0.1 test fixtures.
• Verified React, Web Components, Angular delegation, version selection, explicit versions, update flags, error handling, npm cache, and temporary CLI cleanup.
• No new defects were confirmed during E2E testing.

[coveralls]

Coverage is 95.928% — ganastasov/temporary-cli-version into ganastasov/ig-update-command. No base build found for ganastasov/ig-update-command.

[Copilot]

🔵 Needs a closer look

The CLI delegates to a local installation without checking its Node.js requirement, risking a startup failure before compatibility checks can preserve the usable invoked CLI.

No open issues 🎉

What changed in this PR

Adds automatic CLI selection and temporary execution to ig update for React and Web Components, extending the update workflow introduced for #1847 without requiring a global CLI upgrade.

Changes:

• Selects a project-local or newer registry CLI, including explicit major-version requests.
• Installs temporary runners, forwards arguments, preserves exit codes, and cleans up afterward.
• Reuses npm helpers and suppresses duplicate analytics during delegated execution.

File	Description
spec/​unit/​version-update-spec.ts	Tests shared npm command construction and extra arguments.
spec/​unit/​update-runner-spec.ts	Tests runner selection, installation, execution, and cleanup.
spec/​unit/​update-command-spec.ts	Tests delegation, fallback, analytics, and framework exclusions.
spec/​unit/​GoogleAnalytic-spec.ts	Tests environment-based analytics suppression.
spec/​unit/​execute-spec.ts	Tests version-aware project-local CLI selection.
packages/​core/​util/​GoogleAnalytics.ts	Supports disabling analytics through an environment variable.
packages/​core/​update/​version-update.ts	Exports reusable npm helpers and validates Windows shell arguments.
packages/​cli/​lib/​commands/​update.ts	Integrates runner selection before updates and migrations.
packages/​cli/​lib/​commands/​update-runner.ts	Implements registry selection and temporary CLI execution.
packages/​cli/​bin/​execute.js	Adds version-aware local delegation for update.

_{Review effort: Balanced}

[Copilot]

🔵 Needs a closer look

The temporary CLI receives host process arguments instead of the arguments supplied to exported run(args) calls, potentially launching interactive setup rather than the requested update.

No open issues 🎉

1 previously missed issue

In code that hasn't changed since last review

Forward run() arguments to the temporary CLI

packages/​cli/​lib/​commands/​update-runner.ts:80

When a newer runner is selected for an exported run(args) call, the temporary CLI receives the host process's arguments instead of the supplied update arguments. For example, run(["update", "igniteui-react", "--dry-run"]) from a script with no command-line arguments launches interactive setup rather than the update. Pass the actual invocation arguments through the update handler to runTemporaryCli instead of reading process.argv here.

_{Review effort: Balanced}