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ban-type-assertions

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Replace unsafe casts with compiler-checked types.

Software Engineering#type safety#typescript#linting#refactoring#eslint#zod#monorepo
AuthoroElberte
Version1.0.0
Installs0

System Documentation

What problem does it solve?

This Skill prevents brittle, unverifiable TypeScript as assertions by forcing you to use compiler-checked narrowing or runtime-validated schemas instead.

Core Features & Use Cases

  • Enforces safe type assertions: Enables @typescript-eslint/consistent-type-assertions with assertionStyle: 'never' to block as X casts.
  • Provides replacement patterns by boundary type: Uses Zod parsing for external data boundaries, control-flow narrowing for union types, and a justified last resort only when unavoidable.
  • Improves maintainability across packages: Guides you to centralize duplicated types/schemas into @factory/common and update tests so mocks validate correctly.

Quick Start

Use it to enable the rule in your package by adding @typescript-eslint/consistent-type-assertions with assertionStyle: 'never' in packages/<name>/.eslintrc.js, then fix each as X violation by applying the appropriate replacement pattern.

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

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Please help me install this Skill:
Name: ban-type-assertions
Download link: https://github.com/oElberte/dotfiles/archive/main.zip#ban-type-assertions

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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