Strict Mode

Definitions

1. A restricted variant of JavaScript (activated by `"use strict"`) that disables error-prone features like implicit globals, silent assignment failures, and `with` statements, turning them into thrown errors. In TypeScript, `strict: true` enables the full suite of type-checking flags including `strictNullChecks` and `noImplicitAny`.

   In plain English: A setting that makes the language pickier about potential mistakes, catching errors early instead of silently allowing them.

   Example: "Enable strict mode in tsconfig — I'd rather fix the type errors now than debug undefined at runtime."

Related Terms

• Callback Hell
• Transpiler
• Deno
• Bun
• JavaScript Module
• Module Bundler
• Module System
• Path Alias
• TSConfig
• Type Definition
• TypeScript Compiler