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Four-Layer Automated Accessibility Testing Strategy for Design Systems Explained

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A front-end developer shares how a personal encounter with a visually impaired person reshaped their approach to web accessibility. The article argues that most developers overlook accessibility not out of indifference but because their standard workflows never flag it as broken. The author highlights that a single accessibility defect in a shared design system component can propagate across every product that consumes it, making design systems the highest-leverage place to enforce fixes. To address this, the team implemented a layered, automated accessibility testing strategy within a component library monorepo, covering tooling, code practices, and CI integration. The approach aims to embed accessibility standards into development workflows so compliance does not rely solely on individual awareness or memory.

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