Q: We can rename a .js file to .ts file generally.

A False
B True

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Answer: B

Explanation:

You can rename a .js file to a .ts file, but doing so doesn't automatically convert the JavaScript code to TypeScript. TypeScript is a superset of JavaScript, which means that valid JavaScript code is also valid TypeScript code. However, TypeScript adds static typing and additional features that JavaScript doesn't have.

If you have a JavaScript file (.js) and you rename it to a TypeScript file (.ts), the file will be treated as TypeScript by editors and tools that recognize the file extension. You can then gradually add TypeScript features such as type annotations and take advantage of TypeScript's static type checking.

It's important to note that simply renaming the file doesn't give you the full benefits of TypeScript. To leverage TypeScript features, you need to actively add type annotations and use TypeScript-specific syntax in your code.

Introduction to TypeScript

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