i) Check what version of node you are running.
$ node -V
ii) Install typescript globally in your machine
$ npm install -g typecript
iii) Install tsconfig node module for the node version that you are running in your local machine
$ npm install –save-dev @tsconfig/node14
iv) In the folder that you have created for testing TypeScript, create tsconfig.json file with the following parameters
{
“$schema”: “https://json.schemastore.org/tsconfig”,
“display”: “Node 14”,
“compilerOptions”: {
“lib”: [“es2020”, “dom”],
“module”: “commonjs”,
“target”: “es2020”,
“strict”: true,
“esModuleInterop”: true,
“skipLibCheck”: true,
“forceConsistentCasingInFileNames”: true
} ,
“extends”: “@tsconfig/node14/tsconfig.json”
}
v) To compile typescript to js, you will use a command similar to
$ tsc mytypescriptprogram.ts
Note: If tsconfig.json file is not there, then the code editor will throw errors such as duplicate class found in the code.
