Prereload script into node interactive mode

Question

Is it possibille to run node.exe, pipe a text into it, and continue the interactive session?

I want to create a shortcut bat (or bash) file for editing my database.

Usually this is what I'm doing:

$ node

>var db=require('mydb')
>db.open('myserver')
>//Now I can start access the db
>db.query...

I want to do something like that:

$ node -i perDefinedDb.js

>db.query(.... //I don't want to define the DB each time I run the node.exe

I tried some like that:

echo console.log(a) | node.exe

This is the result:

3

And the program is Finish. I want to continue the node REPL after piping something into.

---

In Other Words: I want to be able to use my DB from node REPL, without defining it each time.

Answer 1

Launch the REPL from your js file and you can give the context you want:

const repl = require('repl');
var db = require('mydb');
db.open('myserver');

repl.start('> ').context.db = db;

Now you just have to run this file ( node myREPL.js ) and you can REPL as usual.