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angularjs-migration

Migrate AngularJS 1.x applications to modern Angular using ngUpgrade coexistence strategies.

6|1|Updated Mar 30, 2026
Search Tags:#typescript#routing#angularjs#strangler fig#angular migration#ngupgrade#dual-boot
One-click install
npx skills add https://github.com/wesleyosantos91/multi-agents --skill angularjs-migration
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: angularjs-migration
Source: https://github.com/wesleyosantos91/multi-agents/tree/main/devin/.devin/skills/angularjs-migration
Command: npx skills add https://github.com/wesleyosantos91/multi-agents --skill angularjs-migration

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

It helps teams reduce risk and downtime when migrating a legacy AngularJS (1.x) application to modern Angular by providing practical, incremental migration strategies and concrete coexistence patterns.

Core Features & Use Cases

  • Incremental migration planning: Choose a migration strategy (ngUpgrade, Strangler Fig, Big Bang, Rewrite) based on risk and timelines.
  • Dual-boot implementation patterns (ngUpgrade): Use hybrid bootstrap, downgrade/upgrade components, and share services between Angular and AngularJS.
  • Safe transition guidance: Recommend an execution order, define migration criteria per component, and surface common pitfalls like route conflicts and digest cycle mismatches.

Quick Start

Ask your AI to propose a 6-month incremental migration plan for your AngularJS app using ngUpgrade with Strangler Fig routing boundaries, including what to migrate first, how to dual-boot, and how to track progress metrics.

Frequently Asked Questions about angularjs-migration

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What is the best way to migrate AngularJS to Angular without stopping production?▼

Incremental migration using ngUpgrade dual-boot or Strangler Fig routing allows AngularJS to Angular migration while keeping large production codebases running, reducing risk and downtime by coexisting rather than rewriting.

How do I share services and components between Angular and AngularJS during migration?▼

You can share services and components during AngularJS migration by applying dual-boot ngUpgrade patterns, specifically using downgrade and upgrade directives to bridge dependencies across both frameworks.

When should I choose Strangler Fig routing over a big bang rewrite for migration?▼

Choose Strangler Fig routing over a big bang rewrite when migrating large AngularJS apps that must remain operational, allowing incremental feature replacement rather than simultaneous full system replacement.

Does ngUpgrade dual-boot work with TypeScript and modern Angular routing?▼

Yes, ngUpgrade dual-boot supports TypeScript and integrates modern Angular routing by establishing hybrid bootstrap boundaries, allowing gradual replacement of AngularJS routes without breaking existing application flows.

Why do digest cycle mismatches and route conflicts happen during ngUpgrade migration?▼

Digest cycle mismatches and route conflicts occur during AngularJS to Angular migration due to hybrid bootstrap integration issues, requiring careful migration sequencing and risk mitigation to resolve runtime conflicts.

How do I plan an incremental migration strategy for a large AngularJS codebase?▼

Plan an AngularJS incremental migration by evaluating risk and timelines to select a strategy, defining migration criteria per component, and sequencing execution to safely transition large codebases.

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