# `const` and Assignment

TypeScript uses `const`, `let`, and `var` for variable declarations. Modern code usually prefers `const` and `let`.

## `const`

```ts
const apiBase = 'https://example.com';
```

- `const` means the binding cannot be reassigned.
- You can still mutate object contents unless frozen.

```ts
const config = { retries: 2 };
config.retries = 3; // allowed
// config = {}; // not allowed
```

## Assignment Operator `=`

```ts
let count = 0;
count = count + 1;
```

- `=` assigns a new value to a variable.

## Python Comparison

Python has no enforced `const`; TypeScript enforces no-reassign when `const` is used.