AwaitExpression: function()

in packages/transform/src/visit.js [352:368]

• 11 lines of code
• 1 McCabe index (conditional complexity)

  AwaitExpression: function(path) {
    const t = util.getTypes();

    // Convert await expressions to yield expressions.
    let argument = path.node.argument;

    // Transforming `await x` to `yield regeneratorRuntime.awrap(x)`
    // causes the argument to be wrapped in such a way that the runtime
    // can distinguish between awaited and merely yielded values.
    util.replaceWithOrRemove(path, t.yieldExpression(
      t.callExpression(
        util.runtimeProperty("awrap"),
        [argument]
      ),
      false
    ));
  }