Gets or sets the value for that and all upcoming operations.

import Batch = require("nativescript-batch");

var b = Batch.newBatch(function(ctx) {
    // ctx.value = undefined
  
    ctx.value = 666:
}).then(function(ctx) {
    // ctx.value = 666
  
    // do something that does not change
    // the ctx.value property
}).then(function(ctx) {
    // ctx.value = 666
  
    // do something that does not change
    // the ctx.value property
}).then(function(ctx) {
    // ctx.value = 666
  
    ctx.value = "TM";
}).then(function(ctx) {
    // ctx.value = "TM"
});

b.start();