GlobalBinding

GlobalBinding is like Binding but for globals. It tracks usage of a variable that is not declared, but is being used.

const { traverse } = require('estree-toolkit');
const { parseModule } = require('meriyah');

const ast = parseModule(`
document.querySelector('.class')
window.location.reload();
x = 7;
`);

traverse(ast, {
  $: { scope: true },
  Program(path) {
    path.scope.globalBindings
    /* => 
      {
        document: GlobalBinding { ... },
        window: GlobalBinding { ... },
        x: GlobalBinding { ... }
      }
    */
  }
});

Properties

`kind`

Type: 'global'

For GlobalBindings, the kind is constant and it's 'global'.

`name`

Type: string

The name of the global binding.

`references`

Type: NodePath[]

All paths that references this global binding.

`constantViolations`

Type: NodePaths[]

All paths that reassigns the value of this global binding.

`constant`

Type: false

For global bindings we can't know for sure if the binding is constant, because other modules/files can change value of global bindings anytime. So any global binding's constant would be always false.