Ionic's starter projects now come equipped with ESLint, providing a unified linting tool across various project types and phasing out the deprecated TSLint. The transition from TSLint to ESLint, driven by the TypeScript community's push for improved tooling and a more cohesive experience for both TypeScript and JavaScript developers, began with TSLint's deprecation in 2019 and culminated in the TypeScript-ESLint team's efforts to support developers. To upgrade a project from TSLint to ESLint, developers can use Angular-ESLint schematics to automate the conversion process, after which they can fully utilize ESLint's wide range of plugins, including Prettier. This shift ensures that new Ionic Angular projects benefit from stable and modern linting tools, with appreciation expressed for the contributions of James Henry, Brad Zacher, and others in maintaining TypeScript-ESLint and Angular-ESLint.