To run a TypeScript file, you need to first install TypeScript on your machine using the Node Package Manager (npm). You can do this by running the following command:
npm install -g typescript
Once TypeScript is installed, you can create a TypeScript file (file.ts) and run it with the following steps:
1. Create a TypeScript file: file.ts
console.log("Hello, TypeScript!");
2. Open a terminal and navigate to the directory containing the file.ts file.
3. Compile the TypeScript file using the following command: tsc file.ts
4. This will transpile the TypeScript code into JavaScript code and generate a file.js file in the same directory.
5. Run the transpiled JavaScript file using the following command: node file.js
6. You should see the output Hello, TypeScript! in the terminal.
Here's another example assuming the TypeScript file is having a function:
1. Create a TypeScript file math.ts
function add(number1: number, number2: number): number {
return number1 + number2;
}
console.log(add(5, 10));
2. Open a terminal and navigate to the directory containing the math.ts file.
3. Compile the TypeScript file using the following command: tsc math.ts
4. This will transpile the TypeScript code into JavaScript code and generate a math.js file in the same directory.
6. Run the transpiled JavaScript file using the following command: node math.js
7. You should see the output 15 in the terminal.