Expand placeholders in a template string/strings
npm install --save @dropb/expandconst { expand } = require('@dropb/expand');
const values = { one: 'One', two: 'Two', '3': 'Three', '4': 'Four', five: ['Five', 'Six'] };
console.log(expand('{one}...{two}...{3}...{ 4 }...{five[0]}', values));
// One...Two...Three...Four...Five
const { Template } = require('@dropb/expand');
Template.sep = '${ }';
const template = ['-loglevel', '${level}', '-i', '${in}', 'copy', '-f', 'flv', '${out}'];
const config = { level: 'info', in: '/tmp/file.mkv', out: '/tmp/output.mp4' };
console.log(expand(template, config));
/*
[ '-loglevel',
'info',
'-i',
'/tmp/file.mkv',
'copy',
'-f',
'flv',
'/tmp/output.mp4' ]
*/