Program at 1:0
+-- sourceType: script
+-- body:
|   +-- 0: BlockStatement at 1:0
|   |   +-- body:
|   |   |   +-- 0: VariableDeclaration at 1:1
|   |   |   |   +-- kind: let
|   |   |   |   +-- declarations:
|   |   |   |   |   +-- 0: VariableDeclarator at 1:5
|   |   |   |   |   |   +-- id: Identifier at 1:5
|   |   |   |   |   |   |   +-- name: a
|   |   |   |   |   |   +-- init: Literal at 1:9
|   |   |   |   |   |   |   +-- value: 15.0
|   |   |   |   |   +-- 1: VariableDeclarator at 1:13
|   |   |   |   |   |   +-- id: Identifier at 1:13
|   |   |   |   |   |   |   +-- name: b
|   |   |   |   |   |   +-- init: None
|   |   |   +-- 1: BlockStatement at 1:16
|   |   |   |   +-- body:
|   |   |   |   |   +-- 0: ExpressionStatement at 1:17
|   |   |   |   |   |   +-- expression: SequenceExpression at 1:17
|   |   |   |   |   |   |   +-- expressions:
|   |   |   |   |   |   |   |   +-- 0: Literal at 1:17
|   |   |   |   |   |   |   |   |   +-- value: 1337.228
|   |   |   |   |   |   |   |   +-- 1: false
|   |   |   |   |   |   |   |   |   +-- value: False
|   |   |   |   |   |   |   |   +-- 2: "String"
|   |   |   |   |   |   |   |   |   +-- value: String
|   |   |   +-- 2: EmptyStatement at 1:45
|   |   |   +-- 3: BlockStatement at 1:47
|   |   |   |   +-- body:
|   |   |   |   |   +-- 0: VariableDeclaration at 1:48
|   |   |   |   |   |   +-- kind: var
|   |   |   |   |   |   +-- declarations:
|   |   |   |   |   |   |   +-- 0: VariableDeclarator at 1:52
|   |   |   |   |   |   |   |   +-- id: Identifier at 1:52
|   |   |   |   |   |   |   |   |   +-- name: aaaaaaaaaaaaaa
|   |   |   |   |   |   |   |   +-- init: None