From 269b558a5f7f8ef4a7cee899c896ca65931cb21e Mon Sep 17 00:00:00 2001
From: Rasmus Eneman <pie.or.paj@gmail.com>
Date: Sun, 19 Mar 2017 15:02:00 +0100
Subject: [PATCH] Fix: Label variable declartions as Ambient (fixes #185)

---
 lib/ast-converter.js                          |   8 +-
 .../basics/declare-variable.result.js         | 220 ++++++++++++++++++
 .../typescript/basics/declare-variable.src.ts |   1 +
 3 files changed, 228 insertions(+), 1 deletion(-)
 create mode 100644 tests/fixtures/typescript/basics/declare-variable.result.js
 create mode 100644 tests/fixtures/typescript/basics/declare-variable.src.ts

diff --git a/lib/ast-converter.js b/lib/ast-converter.js
index ea8a187..8c00bd6 100644
--- a/lib/ast-converter.js
+++ b/lib/ast-converter.js
@@ -954,8 +954,14 @@ module.exports = function(ast, extra) {
                 break;
 
             case SyntaxKind.VariableStatement:
+                var variableDeclarationType = "VariableDeclaration",
+                    variableIsAmbient = ts.isInAmbientContext(node);
+
+                if (variableIsAmbient) {
+                    variableDeclarationType = "TSAmbientVariableDeclaration";
+                }
                 assign(result, {
-                    type: "VariableDeclaration",
+                    type: variableDeclarationType,
                     declarations: node.declarationList.declarations.map(convertChild),
                     kind: getDeclarationKind(node.declarationList)
                 });
diff --git a/tests/fixtures/typescript/basics/declare-variable.result.js b/tests/fixtures/typescript/basics/declare-variable.result.js
new file mode 100644
index 0000000..16525c1
--- /dev/null
+++ b/tests/fixtures/typescript/basics/declare-variable.result.js
@@ -0,0 +1,220 @@
+module.exports = {
+    "body": [
+        {
+            "declarations": [
+                {
+                    "id": {
+                        "loc": {
+                            "end": {
+                                "column": 13,
+                                "line": 1
+                            },
+                            "start": {
+                                "column": 12,
+                                "line": 1
+                            }
+                        },
+                        "name": "a",
+                        "range": [
+                            12,
+                            13
+                        ],
+                        "type": "Identifier",
+                        "typeAnnotation": {
+                            "loc": {
+                                "end": {
+                                    "column": 21,
+                                    "line": 1
+                                },
+                                "start": {
+                                    "column": 15,
+                                    "line": 1
+                                }
+                            },
+                            "range": [
+                                15,
+                                21
+                            ],
+                            "type": "TypeAnnotation",
+                            "typeAnnotation": {
+                                "loc": {
+                                    "end": {
+                                        "column": 21,
+                                        "line": 1
+                                    },
+                                    "start": {
+                                        "column": 15,
+                                        "line": 1
+                                    }
+                                },
+                                "range": [
+                                    15,
+                                    21
+                                ],
+                                "type": "TSStringKeyword"
+                            }
+                        }
+                    },
+                    "init": null,
+                    "loc": {
+                        "end": {
+                            "column": 21,
+                            "line": 1
+                        },
+                        "start": {
+                            "column": 12,
+                            "line": 1
+                        }
+                    },
+                    "range": [
+                        12,
+                        21
+                    ],
+                    "type": "VariableDeclarator"
+                }
+            ],
+            "kind": "let",
+            "loc": {
+                "end": {
+                    "column": 22,
+                    "line": 1
+                },
+                "start": {
+                    "column": 0,
+                    "line": 1
+                }
+            },
+            "range": [
+                0,
+                22
+            ],
+            "type": "TSAmbientVariableDeclaration"
+        }
+    ],
+    "loc": {
+        "end": {
+            "column": 22,
+            "line": 1
+        },
+        "start": {
+            "column": 0,
+            "line": 1
+        }
+    },
+    "range": [
+        0,
+        22
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "loc": {
+                "end": {
+                    "column": 7,
+                    "line": 1
+                },
+                "start": {
+                    "column": 0,
+                    "line": 1
+                }
+            },
+            "range": [
+                0,
+                7
+            ],
+            "type": "Identifier",
+            "value": "declare"
+        },
+        {
+            "loc": {
+                "end": {
+                    "column": 11,
+                    "line": 1
+                },
+                "start": {
+                    "column": 8,
+                    "line": 1
+                }
+            },
+            "range": [
+                8,
+                11
+            ],
+            "type": "Keyword",
+            "value": "let"
+        },
+        {
+            "loc": {
+                "end": {
+                    "column": 13,
+                    "line": 1
+                },
+                "start": {
+                    "column": 12,
+                    "line": 1
+                }
+            },
+            "range": [
+                12,
+                13
+            ],
+            "type": "Identifier",
+            "value": "a"
+        },
+        {
+            "loc": {
+                "end": {
+                    "column": 14,
+                    "line": 1
+                },
+                "start": {
+                    "column": 13,
+                    "line": 1
+                }
+            },
+            "range": [
+                13,
+                14
+            ],
+            "type": "Punctuator",
+            "value": ":"
+        },
+        {
+            "loc": {
+                "end": {
+                    "column": 21,
+                    "line": 1
+                },
+                "start": {
+                    "column": 15,
+                    "line": 1
+                }
+            },
+            "range": [
+                15,
+                21
+            ],
+            "type": "Identifier",
+            "value": "string"
+        },
+        {
+            "loc": {
+                "end": {
+                    "column": 22,
+                    "line": 1
+                },
+                "start": {
+                    "column": 21,
+                    "line": 1
+                }
+            },
+            "range": [
+                21,
+                22
+            ],
+            "type": "Punctuator",
+            "value": ";"
+        }
+    ],
+    "type": "Program"
+};
diff --git a/tests/fixtures/typescript/basics/declare-variable.src.ts b/tests/fixtures/typescript/basics/declare-variable.src.ts
new file mode 100644
index 0000000..dd91f32
--- /dev/null
+++ b/tests/fixtures/typescript/basics/declare-variable.src.ts
@@ -0,0 +1 @@
+declare let a: string;
\ No newline at end of file