Logic machine

A logic machine for JS. Note: if an operator or an expected is an undefined then logic block always return false.

example

var logic = require('logic-machine');
 
var src = [
  'or', // one is true
  { expected: 7, operator: 'gt', value: 5 }, // false
  { expected: 3, operator: 'eq', value: 5 }, // false
  [
    'and', // all is true
    { expected: 6, operator: 'lt', value: 5 }, // true
    { expected: 5, operator: 'lte', value: 5 }, // true
    [
      'or', // one is true
      { expected: 5, operator: 'lt', value: 5 }, // false
      { expected: 5, operator: 'lte', value: 5 }, // true
    ] // true
  ] // true
];
 
console.log(logic(src)); // true

var logic = require('logic-machine');
 
var src = [
  'or', // one is true
  { expected: 7, operator: 'gt', value: 5 }, // false
  { expected: 3, operator: 'eq', value: 5 }, // false
  
  // true (by default, some of the array)
  { expected: 5, operator: 'eq', value: [4,5,6] },
  
  // true (arr is [{ value: 4, result: false }, { value: 5, result: true }, { value: 6, result: false }])
  { expected: 5, operator: 'eq', value: [4,5,6], getResult: arr => !!arr[1].result },
 
  // false (arr is [{ value: 5, result: true }, { value: 4, result: false }, { value: 6, result: false }])
  { expected: 5, operator: 'eq', value: [5,4,6], getResult: arr => !!arr[1].result },
];
 
console.log(logic(src)); // true

operators

Logic machine has some operators:

• eq: value equals expected
• neq: value not equals expected
• gt: value greaters than expected
• gte: value greaters than or equals expected
• lt: value lowers than expected
• lte: value lowers than or equals expected
• contain: value string contains expected string
• notContain: value string not contains expected string
• startWith: value string starts with expected string
• endWith: value string ends with expected string
• regexp: value string matches expected (as a regular expression)
• includes: value (as an array) includes expected (as a string)
• nincludes: value (as an array) not includes expected (as a string)

install

With npm do:

npm install logic-machine

test

With npm do:

npm test