syncrec

This module is a utility module for calling your typical callback oriented code in a synchronous fashion. There are two functions:

• sync - calls a method with context and arguments returning the value
• syncrec - calls a method with context repeatedly for each of the args arrays

How to use it:

So let's say you are trying to setup a bunch of sqlite3 database tables:

const { sync, syncrec } =  require('./syncrec.js')
const sqlite3 = require('sqlite3')
const db = new sqlite3.Database(':memory:');

(async function() {
	return await syncrec(db,db.run,
		['CREATE TABLE users ( user_id TEXT, name TEXT, email TEXT, address TEXT )'],
		['CREATE TABLE attributes ( attribute_id TEXT, user_id TEXT, name TEXT, value TEXT )'],
		['CREATE TABLE topics ( topic_id TEXT, user_id TEXT, name TEXT )'],
		['INSERT INTO users (user_id,name,email,address) VALUES (?,?,?,?)', '1','homer','[email protected]','742 Evergreen Terr.' ],
		['INSERT INTO users (user_id,name,email,address) VALUES (?,?,?,?)', '2','marge','[email protected]','742 Evergreen Terr.' ]
	)
})()

This will also add some users to the table one after another in the order specified. This ordered list makes it easier to ensure that the elements are instantiated in the correct order.

You can also use this to fetch the data:

setTimeout( async () => {
	var users = await sync(db,db.all, 'SELECT * FROM users') 
	console.log(users)
}, 1000)

This will return the rows from the table as an array or objects. This can be very handy when you want to perform some sequence of queries, but need to chain them in order passing results from one to the next.