Function customFunction

test/unit-tests/expression/node/ArrayNode.test.js:255–267

(node, options)

  it('should stringify an ArrayNode with custom toString', function () {
    // Also checks if the custom functions get passed on to the children
    const customFunction = function (node, options) {
      if (node.type === 'ArrayNode') {
        let string = '['
        node.items.forEach(function (item) {
          string += item.toString(options) + ', '
        })

        string += ']'
        return string
      } else if (node.type === 'ConstantNode') {
        return 'const(' + node.value + ', ' + math.typeOf(node.value) + ')'
      }
    }

    const a = new ConstantNode(1)
    const b = new ConstantNode(2)