A simple logical parser as an npm module
npm install logician
var solve = require('logician')
// solve basic logical operations
solve("true or false") // true
solve("true and false") // false
// solve numeric operations
solve("1 + 1 == 2") // true
solve("1 + 1 == 1 or true") // true
solve("1 != 2 and 2 != 1") // true
solve("4 < 5 and 7 >= 7") // true
Numerical operations: + - * / == != > < >= <=
Logical operations: or and is isnt not
Synonyms: == = or || and && not !
It's worth noting that you should avoid confusing == with is as the former is a numerical comparison and the latter a logical comparisons.
See test/main.js for many more examples.
It allows strings to be defined externally to an application and fed in to be computed at runtimes.
For instance, if you have an application defined by a number of configuration files, or defined by an authoring tool, you can allow authors to account for logical decisions without them writing code.
npm install
gulp