RunKit + npm: filtrex

const { compileExpression } = require("filtrex@3.0.0-rc11"); const { add, subtract, unaryMinus, matrix } = require("mathjs"); const options = { operators: { '+': add, '-': (a, b) => b == undefined ? unaryMinus(a) : subtract(a, b), } }; const data = { a: matrix([1, 2, 3]), b: matrix([-1, 0, 1]) }; compileExpression(`-a + b`, options)(data) // [-2, -2, -2]