engine-default-operators.js

'use strict'

import Operator from './operator'

const Operators = []
function isCollection (value) {
  return !!(value && (Array.isArray(value) || typeof value === 'string'))
}

Operators.push(new Operator('equal', (a, b) => a === b))
Operators.push(new Operator('notEqual', (a, b) => a !== b))
Operators.push(new Operator('in', (a, b) => isCollection(b) && b.indexOf(a) > -1))
Operators.push(new Operator('notIn', (a, b) => !isCollection(b) || b.indexOf(a) === -1))

Operators.push(new Operator('contains', (a, b) => a.indexOf(b) > -1, isCollection))
Operators.push(new Operator('doesNotContain', (a, b) => a.indexOf(b) === -1, isCollection))

function numberValidator (factValue) {
  return typeof factValue !== 'object' && !Number.isNaN(Number.parseFloat(factValue))
}
Operators.push(new Operator('lessThan', (a, b) => a < b, numberValidator))
Operators.push(new Operator('lessThanInclusive', (a, b) => a <= b, numberValidator))
Operators.push(new Operator('greaterThan', (a, b) => a > b, numberValidator))
Operators.push(new Operator('greaterThanInclusive', (a, b) => a >= b, numberValidator))

export default Operators