Typescript beginning with ts-node

Install nvm first

https://github.com/nvm-sh/nvm#installing-and-updating

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.3/install.sh | bash

Example of install nvm

~$ curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.3/install.sh | bash
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 15916  100 15916    0     0  32283      0 --:--:-- --:--:-- --:--:-- 32283
=> Downloading nvm from git to '/home/ci/.nvm'
=> Cloning into '/home/ci/.nvm'...
remote: Enumerating objects: 358, done.
remote: Counting objects: 100% (358/358), done.
remote: Compressing objects: 100% (304/304), done.
remote: Total 358 (delta 41), reused 164 (delta 28), pack-reused 0
Receiving objects: 100% (358/358), 218.72 KiB | 1.40 MiB/s, done.
Resolving deltas: 100% (41/41), done.
* (HEAD detached at FETCH_HEAD)
  master
=> Compressing and cleaning up git repository

=> Appending nvm source string to /home/ci/.bashrc
=> Appending bash_completion source string to /home/ci/.bashrc
=> Close and reopen your terminal to start using nvm or run the following to use it now:

export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion

Install and select Node.js version by nvm command line

nvm install v18

Please logout and login again to activate nvm.sh shell environment

~$ nvm ls
            N/A
iojs -> N/A (default)
node -> stable (-> N/A) (default)
unstable -> N/A (default)
~$ nvm install v18
Downloading and installing node v18.12.1...
Downloading https://nodejs.org/dist/v18.12.1/node-v18.12.1-linux-x64.tar.xz...
################################################################################################################################ 100.0%
Computing checksum with sha256sum
Checksums matched!
Now using node v18.12.1 (npm v8.19.2)
Creating default alias: default -> v18 (-> v18.12.1)
~$ nvm ls
->     v18.12.1
default -> v18 (-> v18.12.1)
iojs -> N/A (default)
unstable -> N/A (default)
node -> stable (-> v18.12.1) (default)
stable -> 18.12 (-> v18.12.1) (default)
lts/* -> lts/hydrogen (-> v18.12.1)
lts/argon -> v4.9.1 (-> N/A)
lts/boron -> v6.17.1 (-> N/A)
lts/carbon -> v8.17.0 (-> N/A)
lts/dubnium -> v10.24.1 (-> N/A)
lts/erbium -> v12.22.12 (-> N/A)
lts/fermium -> v14.21.2 (-> N/A)
lts/gallium -> v16.19.0 (-> N/A)
lts/hydrogen -> v18.1

Install typescript

~$ npm install -g typescript

added 1 package, and audited 2 packages in 2s

found 0 vulnerabilities
npm notice
npm notice New major version of npm available! 8.19.2 -> 9.2.0
npm notice Changelog: https://github.com/npm/cli/releases/tag/v9.2.0
npm notice Run npm install -g npm@9.2.0 to update!
npm notice

install typescript with specific version

npm install -g typescript@4.6.4

Example of hello.ts

Create example hello.ts file

cat << EOF >> hello.ts
var name:string = "Coder of Typescript";
console.log(`Hello, ${name}`);
EOF

Results of hello.ts

~$ ts-node hello.ts
Hello, Coder

Conclusions

I considere that typescript is a good tool for nodejs to write more stable code. Enjoy The journal for Typescript writing!