TypeScript

Overview

• Typescript is a subset of javascript with extended typing, it can be compiled to pure javascript with tsc compiler

Get Started

• create tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "lib": [
      "dom",
      "dom.iterable",
      "esnext"
    ],
    "allowJs": true,
    "skipLibCheck": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": true,
    "module": "esnext",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true,
    "jsx": "react-jsx",
    "baseUrl": "src",
  },
  "include": [
    "**/*.ts",
    "**/*.tsx"
  ]
}

• Install typescript library

yarn add typescript

• Compile typescript file into javascript file

tsc hello.ts

• Execute typescript file directly

ts-node hello.ts