When You Can’t Use the Word “BIG BANG”
summary
Claims an iterative, non‑Big‑Bang migration that keeps the app releasable at every step and demonstrates it on a contacts app with code on GitHub. Uses dual-boot hybrid mode including both AngularJS and Angular 4, webpack and TypeScript, UpgradeModule plus downgradeInjectable/downgradeComponent, migrates services first then components, rewrites or upgrades third‑party modules, follows an 10-step plan and finishes by dropping AngularJS in a tiny pop not big bang.
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