TypeScript Confidence Bootcamp in Tokyo

Day 1: The Confidence-Boosting TypeScript Journey

• Live debugging session: Identifying common JavaScript pitfalls in production code
• Setting up TypeScript: tsconfig.json configuration and compiler options
• Type annotations: Converting JavaScript variables to TypeScript types
• Primitive types: string, number, boolean, null, undefined, and void
• Complex types: Arrays, objects, and nested type structures
• Interfaces vs Types: When to use each and practical differences
• Enums: Creating reusable constants and string/numeric enums
• Union types: Handling multiple possible types with | operator
• Type guards: Runtime type checking with typeof and instanceof
• Optional properties and parameters with ? syntax
• Function types: Parameter types, return types, and function signatures
• Generic basics: Creating reusable functions with <T> syntax
• Practical refactoring: Converting real JavaScript modules to TypeScript
• Error handling: How TypeScript catches bugs at compile time
• IDE integration: Leveraging IntelliSense and auto-completion
• Common patterns: Converting callback functions, event handlers, and API responses