pihentagy / ts-hello-world

Hello world in typescript

1. Make sure tsc is installed npm install -g typescript

2. cd to an empty dir

3. npm init -y (will create package.json)

4. extend one of the @tsconfig/base configs in tsconfig.json

   tsconfig.json

   {
       "extends": "@tsconfig/node16/tsconfig.json",
       "include": ["src/**/*"], // (1)
       "exclude": ["node_modules", "**/*.spec.ts"],
       "compilerOptions": {
           "outDir": "./dist/" // (2)
       }
   }

   1. input files are in src

   2. Specifying output dir not to mix generated code with .ts files.

On the fly compilation and debugging

1. install ts-node-dev

   npm i -D ts-node-dev+

2. Add to package.json

   {
     "scripts": {
       "start": "tsnd --inspect=0.0.0.0:9229 --respawn --log-error ./src/app.ts",
     }
   }

Use includes with @ aliases

in dev with tsnd

1. Install tsconfig-paths

   npm i -D tsconfig-paths

2. When running tsnd, provide -r tsconfig-paths/register

   {
     "scripts": {
       "start-with-tsconfig-path": "tsnd --inspect=0.0.0.0:9229 --respawn --log-error -r tsconfig-paths/register ./src/app.ts",
     }
   }

in prod use tsc-alias

1. npm i -D tsc-alias

2. provide "baseUrl": "./src", in tsconfig.json

   {
     "scripts": {
       "build": "tsc; npx run tsc-alias",
       "prod": "npm run build && node ./dist/app.js"
     }
   }