diff --git a/.eslintignore b/.eslintignore
index 09a8422e..d7bd5160 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1 +1,4 @@
 !.eslintrc.js
+/node_modules
+/tests/fixtures
+/tools
diff --git a/.travis.yml b/.travis.yml
index 8afb8e61..b3ea3d47 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,4 @@
 language: node_js
-sudo: false
 node_js:
     - 6
     - 7
@@ -8,5 +7,10 @@ node_js:
     - 10
     - 11
     - 12
+
+script:
+    - if [ $TRAVIS_NODE_VERSION -ge 8 ]; then node Makefile.js lint; fi
+    - node Makefile.js test
+
 after_success:
     - npm run coveralls
diff --git a/espree.js b/espree.js
index 7c16b696..ce277c18 100644
--- a/espree.js
+++ b/espree.js
@@ -154,7 +154,7 @@ exports.Syntax = (function() {
     }
 
     for (name in astNodeTypes) {
-        if (astNodeTypes.hasOwnProperty(name)) {
+        if (Object.hasOwnProperty.call(astNodeTypes, name)) {
             types[name] = astNodeTypes[name];
         }
     }
diff --git a/lib/espree.js b/lib/espree.js
index 6c57a87c..0d65018b 100644
--- a/lib/espree.js
+++ b/lib/espree.js
@@ -35,6 +35,7 @@ function normalizeEcmaVersion(ecmaVersion = DEFAULT_ECMA_VERSION) {
             case 8:
             case 9:
             case 10:
+            case 11:
                 return version;
 
             // no default
diff --git a/package.json b/package.json
index 3835c012..03d91482 100644
--- a/package.json
+++ b/package.json
@@ -18,14 +18,14 @@
   },
   "license": "BSD-2-Clause",
   "dependencies": {
-    "acorn": "^6.0.7",
+    "acorn": "^7.0.0",
     "acorn-jsx": "^5.0.0",
-    "eslint-visitor-keys": "^1.0.0"
+    "eslint-visitor-keys": "^1.1.0"
   },
   "devDependencies": {
     "browserify": "^7.0.0",
     "chai": "^1.10.0",
-    "eslint": "^5.7.0",
+    "eslint": "^6.0.1",
     "eslint-config-eslint": "^5.0.1",
     "eslint-plugin-node": "^8.0.0",
     "eslint-release": "^1.0.0",
diff --git a/tests/fixtures/ecma-version/11/bigint/binary.result.js b/tests/fixtures/ecma-version/11/bigint/binary.result.js
new file mode 100644
index 00000000..280dd585
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/bigint/binary.result.js
@@ -0,0 +1,77 @@
+module.exports = {
+    "type": "Program",
+    "loc": {
+        "start": {
+            "line": 1,
+            "column": 0
+        },
+        "end": {
+            "line": 1,
+            "column": 7
+        }
+    },
+    "range": [
+        0,
+        7
+    ],
+    "body": [
+        {
+            "type": "ExpressionStatement",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 7
+                }
+            },
+            "range": [
+                0,
+                7
+            ],
+            "expression": {
+                "type": "Literal",
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 0
+                    },
+                    "end": {
+                        "line": 1,
+                        "column": 7
+                    }
+                },
+                "range": [
+                    0,
+                    7
+                ],
+                "value": null,
+                "raw": "0b0101n",
+                "bigint": "0b0101"
+            }
+        }
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "type": "Numeric",
+            "value": "0b0101n",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 7
+                }
+            },
+            "range": [
+                0,
+                7
+            ]
+        }
+    ]
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/bigint/binary.src.js b/tests/fixtures/ecma-version/11/bigint/binary.src.js
new file mode 100644
index 00000000..d9b0686a
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/bigint/binary.src.js
@@ -0,0 +1 @@
+0b0101n
diff --git a/tests/fixtures/ecma-version/11/bigint/decimal.result.js b/tests/fixtures/ecma-version/11/bigint/decimal.result.js
new file mode 100644
index 00000000..e5fb5ae0
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/bigint/decimal.result.js
@@ -0,0 +1,77 @@
+module.exports = {
+    "type": "Program",
+    "loc": {
+        "start": {
+            "line": 1,
+            "column": 0
+        },
+        "end": {
+            "line": 1,
+            "column": 2
+        }
+    },
+    "range": [
+        0,
+        2
+    ],
+    "body": [
+        {
+            "type": "ExpressionStatement",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 2
+                }
+            },
+            "range": [
+                0,
+                2
+            ],
+            "expression": {
+                "type": "Literal",
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 0
+                    },
+                    "end": {
+                        "line": 1,
+                        "column": 2
+                    }
+                },
+                "range": [
+                    0,
+                    2
+                ],
+                "value": null,
+                "raw": "1n",
+                "bigint": "1"
+            }
+        }
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "type": "Numeric",
+            "value": "1n",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 2
+                }
+            },
+            "range": [
+                0,
+                2
+            ]
+        }
+    ]
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/bigint/decimal.src.js b/tests/fixtures/ecma-version/11/bigint/decimal.src.js
new file mode 100644
index 00000000..7a5a058e
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/bigint/decimal.src.js
@@ -0,0 +1 @@
+1n
diff --git a/tests/fixtures/ecma-version/11/bigint/hex.result.js b/tests/fixtures/ecma-version/11/bigint/hex.result.js
new file mode 100644
index 00000000..c9b46b0d
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/bigint/hex.result.js
@@ -0,0 +1,77 @@
+module.exports = {
+    "type": "Program",
+    "loc": {
+        "start": {
+            "line": 1,
+            "column": 0
+        },
+        "end": {
+            "line": 1,
+            "column": 5
+        }
+    },
+    "range": [
+        0,
+        5
+    ],
+    "body": [
+        {
+            "type": "ExpressionStatement",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 5
+                }
+            },
+            "range": [
+                0,
+                5
+            ],
+            "expression": {
+                "type": "Literal",
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 0
+                    },
+                    "end": {
+                        "line": 1,
+                        "column": 5
+                    }
+                },
+                "range": [
+                    0,
+                    5
+                ],
+                "value": null,
+                "raw": "0x80n",
+                "bigint": "0x80"
+            }
+        }
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "type": "Numeric",
+            "value": "0x80n",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 5
+                }
+            },
+            "range": [
+                0,
+                5
+            ]
+        }
+    ]
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/bigint/hex.src.js b/tests/fixtures/ecma-version/11/bigint/hex.src.js
new file mode 100644
index 00000000..334bd267
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/bigint/hex.src.js
@@ -0,0 +1 @@
+0x80n
diff --git a/tests/fixtures/ecma-version/11/bigint/invalid-float.result.js b/tests/fixtures/ecma-version/11/bigint/invalid-float.result.js
new file mode 100644
index 00000000..17158f6e
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/bigint/invalid-float.result.js
@@ -0,0 +1,6 @@
+module.exports = {
+    "index": 3,
+    "lineNumber": 1,
+    "column": 4,
+    "message": "Identifier directly after number"
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/bigint/invalid-float.src.js b/tests/fixtures/ecma-version/11/bigint/invalid-float.src.js
new file mode 100644
index 00000000..d87b390c
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/bigint/invalid-float.src.js
@@ -0,0 +1 @@
+1.0n
diff --git a/tests/fixtures/ecma-version/11/bigint/octal.result.js b/tests/fixtures/ecma-version/11/bigint/octal.result.js
new file mode 100644
index 00000000..949109de
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/bigint/octal.result.js
@@ -0,0 +1,77 @@
+module.exports = {
+    "type": "Program",
+    "loc": {
+        "start": {
+            "line": 1,
+            "column": 0
+        },
+        "end": {
+            "line": 1,
+            "column": 6
+        }
+    },
+    "range": [
+        0,
+        6
+    ],
+    "body": [
+        {
+            "type": "ExpressionStatement",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 6
+                }
+            },
+            "range": [
+                0,
+                6
+            ],
+            "expression": {
+                "type": "Literal",
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 0
+                    },
+                    "end": {
+                        "line": 1,
+                        "column": 6
+                    }
+                },
+                "range": [
+                    0,
+                    6
+                ],
+                "value": null,
+                "raw": "0o755n",
+                "bigint": "0o755"
+            }
+        }
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "type": "Numeric",
+            "value": "0o755n",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 6
+                }
+            },
+            "range": [
+                0,
+                6
+            ]
+        }
+    ]
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/bigint/octal.src.js b/tests/fixtures/ecma-version/11/bigint/octal.src.js
new file mode 100644
index 00000000..184b15fe
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/bigint/octal.src.js
@@ -0,0 +1 @@
+0o755n
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/basic.result.js b/tests/fixtures/ecma-version/11/dynamic-import/basic.result.js
new file mode 100644
index 00000000..5509d7b9
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/basic.result.js
@@ -0,0 +1,457 @@
+module.exports = {
+    "type": "Program",
+    "loc": {
+        "start": {
+            "line": 1,
+            "column": 0
+        },
+        "end": {
+            "line": 3,
+            "column": 1
+        }
+    },
+    "range": [
+        0,
+        62
+    ],
+    "body": [
+        {
+            "type": "FunctionDeclaration",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 3,
+                    "column": 1
+                }
+            },
+            "range": [
+                0,
+                62
+            ],
+            "id": {
+                "type": "Identifier",
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 15
+                    },
+                    "end": {
+                        "line": 1,
+                        "column": 19
+                    }
+                },
+                "range": [
+                    15,
+                    19
+                ],
+                "name": "main"
+            },
+            "expression": false,
+            "generator": false,
+            "async": true,
+            "params": [],
+            "body": {
+                "type": "BlockStatement",
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 22
+                    },
+                    "end": {
+                        "line": 3,
+                        "column": 1
+                    }
+                },
+                "range": [
+                    22,
+                    62
+                ],
+                "body": [
+                    {
+                        "type": "VariableDeclaration",
+                        "loc": {
+                            "start": {
+                                "line": 2,
+                                "column": 4
+                            },
+                            "end": {
+                                "line": 2,
+                                "column": 36
+                            }
+                        },
+                        "range": [
+                            28,
+                            60
+                        ],
+                        "declarations": [
+                            {
+                                "type": "VariableDeclarator",
+                                "loc": {
+                                    "start": {
+                                        "line": 2,
+                                        "column": 10
+                                    },
+                                    "end": {
+                                        "line": 2,
+                                        "column": 36
+                                    }
+                                },
+                                "range": [
+                                    34,
+                                    60
+                                ],
+                                "id": {
+                                    "type": "Identifier",
+                                    "loc": {
+                                        "start": {
+                                            "line": 2,
+                                            "column": 10
+                                        },
+                                        "end": {
+                                            "line": 2,
+                                            "column": 13
+                                        }
+                                    },
+                                    "range": [
+                                        34,
+                                        37
+                                    ],
+                                    "name": "foo"
+                                },
+                                "init": {
+                                    "type": "AwaitExpression",
+                                    "loc": {
+                                        "start": {
+                                            "line": 2,
+                                            "column": 16
+                                        },
+                                        "end": {
+                                            "line": 2,
+                                            "column": 36
+                                        }
+                                    },
+                                    "range": [
+                                        40,
+                                        60
+                                    ],
+                                    "argument": {
+                                        "type": "ImportExpression",
+                                        "loc": {
+                                            "start": {
+                                                "line": 2,
+                                                "column": 22
+                                            },
+                                            "end": {
+                                                "line": 2,
+                                                "column": 36
+                                            }
+                                        },
+                                        "range": [
+                                            46,
+                                            60
+                                        ],
+                                        "source": {
+                                            "type": "Identifier",
+                                            "loc": {
+                                                "start": {
+                                                    "line": 2,
+                                                    "column": 29
+                                                },
+                                                "end": {
+                                                    "line": 2,
+                                                    "column": 35
+                                                }
+                                            },
+                                            "range": [
+                                                53,
+                                                59
+                                            ],
+                                            "name": "source"
+                                        }
+                                    }
+                                }
+                            }
+                        ],
+                        "kind": "const"
+                    }
+                ]
+            }
+        }
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "type": "Identifier",
+            "value": "async",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 5
+                }
+            },
+            "range": [
+                0,
+                5
+            ]
+        },
+        {
+            "type": "Keyword",
+            "value": "function",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 6
+                },
+                "end": {
+                    "line": 1,
+                    "column": 14
+                }
+            },
+            "range": [
+                6,
+                14
+            ]
+        },
+        {
+            "type": "Identifier",
+            "value": "main",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 15
+                },
+                "end": {
+                    "line": 1,
+                    "column": 19
+                }
+            },
+            "range": [
+                15,
+                19
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "(",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 19
+                },
+                "end": {
+                    "line": 1,
+                    "column": 20
+                }
+            },
+            "range": [
+                19,
+                20
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": ")",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 20
+                },
+                "end": {
+                    "line": 1,
+                    "column": 21
+                }
+            },
+            "range": [
+                20,
+                21
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "{",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 22
+                },
+                "end": {
+                    "line": 1,
+                    "column": 23
+                }
+            },
+            "range": [
+                22,
+                23
+            ]
+        },
+        {
+            "type": "Keyword",
+            "value": "const",
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 4
+                },
+                "end": {
+                    "line": 2,
+                    "column": 9
+                }
+            },
+            "range": [
+                28,
+                33
+            ]
+        },
+        {
+            "type": "Identifier",
+            "value": "foo",
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 10
+                },
+                "end": {
+                    "line": 2,
+                    "column": 13
+                }
+            },
+            "range": [
+                34,
+                37
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "=",
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 14
+                },
+                "end": {
+                    "line": 2,
+                    "column": 15
+                }
+            },
+            "range": [
+                38,
+                39
+            ]
+        },
+        {
+            "type": "Identifier",
+            "value": "await",
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 16
+                },
+                "end": {
+                    "line": 2,
+                    "column": 21
+                }
+            },
+            "range": [
+                40,
+                45
+            ]
+        },
+        {
+            "type": "Keyword",
+            "value": "import",
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 22
+                },
+                "end": {
+                    "line": 2,
+                    "column": 28
+                }
+            },
+            "range": [
+                46,
+                52
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "(",
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 28
+                },
+                "end": {
+                    "line": 2,
+                    "column": 29
+                }
+            },
+            "range": [
+                52,
+                53
+            ]
+        },
+        {
+            "type": "Identifier",
+            "value": "source",
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 29
+                },
+                "end": {
+                    "line": 2,
+                    "column": 35
+                }
+            },
+            "range": [
+                53,
+                59
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": ")",
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 35
+                },
+                "end": {
+                    "line": 2,
+                    "column": 36
+                }
+            },
+            "range": [
+                59,
+                60
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "}",
+            "loc": {
+                "start": {
+                    "line": 3,
+                    "column": 0
+                },
+                "end": {
+                    "line": 3,
+                    "column": 1
+                }
+            },
+            "range": [
+                61,
+                62
+            ]
+        }
+    ]
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/basic.src.js b/tests/fixtures/ecma-version/11/dynamic-import/basic.src.js
new file mode 100644
index 00000000..722788ec
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/basic.src.js
@@ -0,0 +1,3 @@
+async function main() {
+    const foo = await import(source)
+}
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/first-of-statement.result.js b/tests/fixtures/ecma-version/11/dynamic-import/first-of-statement.result.js
new file mode 100644
index 00000000..484ff897
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/first-of-statement.result.js
@@ -0,0 +1,146 @@
+module.exports = {
+    "type": "Program",
+    "loc": {
+        "start": {
+            "line": 1,
+            "column": 0
+        },
+        "end": {
+            "line": 1,
+            "column": 14
+        }
+    },
+    "range": [
+        0,
+        14
+    ],
+    "body": [
+        {
+            "type": "ExpressionStatement",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 14
+                }
+            },
+            "range": [
+                0,
+                14
+            ],
+            "expression": {
+                "type": "ImportExpression",
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 0
+                    },
+                    "end": {
+                        "line": 1,
+                        "column": 14
+                    }
+                },
+                "range": [
+                    0,
+                    14
+                ],
+                "source": {
+                    "type": "Identifier",
+                    "loc": {
+                        "start": {
+                            "line": 1,
+                            "column": 7
+                        },
+                        "end": {
+                            "line": 1,
+                            "column": 13
+                        }
+                    },
+                    "range": [
+                        7,
+                        13
+                    ],
+                    "name": "source"
+                }
+            }
+        }
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "type": "Keyword",
+            "value": "import",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 6
+                }
+            },
+            "range": [
+                0,
+                6
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "(",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 6
+                },
+                "end": {
+                    "line": 1,
+                    "column": 7
+                }
+            },
+            "range": [
+                6,
+                7
+            ]
+        },
+        {
+            "type": "Identifier",
+            "value": "source",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 7
+                },
+                "end": {
+                    "line": 1,
+                    "column": 13
+                }
+            },
+            "range": [
+                7,
+                13
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": ")",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 13
+                },
+                "end": {
+                    "line": 1,
+                    "column": 14
+                }
+            },
+            "range": [
+                13,
+                14
+            ]
+        }
+    ]
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/first-of-statement.src.js b/tests/fixtures/ecma-version/11/dynamic-import/first-of-statement.src.js
new file mode 100644
index 00000000..fadb0d9d
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/first-of-statement.src.js
@@ -0,0 +1 @@
+import(source)
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-import-prop.result.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-import-prop.result.js
new file mode 100644
index 00000000..9771c256
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-import-prop.result.js
@@ -0,0 +1,6 @@
+module.exports = {
+    "index": 16,
+    "lineNumber": 1,
+    "column": 17,
+    "message": "Unexpected token ."
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-import-prop.src.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-import-prop.src.js
new file mode 100644
index 00000000..b1073af3
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-import-prop.src.js
@@ -0,0 +1 @@
+const i = import.property
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-multi-sources.result.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-multi-sources.result.js
new file mode 100644
index 00000000..54c957f1
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-multi-sources.result.js
@@ -0,0 +1,6 @@
+module.exports = {
+    "index": 14,
+    "lineNumber": 1,
+    "column": 15,
+    "message": "Unexpected token ,"
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-multi-sources.src.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-multi-sources.src.js
new file mode 100644
index 00000000..6a11dd57
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-multi-sources.src.js
@@ -0,0 +1 @@
+import(source1, source2)
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-new-import.result.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-new-import.result.js
new file mode 100644
index 00000000..ef8f8527
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-new-import.result.js
@@ -0,0 +1,6 @@
+module.exports = {
+    "index": 4,
+    "lineNumber": 1,
+    "column": 5,
+    "message": "Cannot use new with import()"
+};
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-new-import.src.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-new-import.src.js
new file mode 100644
index 00000000..5fe8698a
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-new-import.src.js
@@ -0,0 +1 @@
+new import(source)
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-no-source.result.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-no-source.result.js
new file mode 100644
index 00000000..c2746067
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-no-source.result.js
@@ -0,0 +1,6 @@
+module.exports = {
+    "index": 7,
+    "lineNumber": 1,
+    "column": 8,
+    "message": "Unexpected token )"
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-no-source.src.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-no-source.src.js
new file mode 100644
index 00000000..4de180fc
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-no-source.src.js
@@ -0,0 +1 @@
+import()
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-only-import.result.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-only-import.result.js
new file mode 100644
index 00000000..d997dfa0
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-only-import.result.js
@@ -0,0 +1,6 @@
+module.exports = {
+    "index": 17,
+    "lineNumber": 2,
+    "column": 1,
+    "message": "Unexpected token"
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-only-import.src.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-only-import.src.js
new file mode 100644
index 00000000..2a39481c
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-only-import.src.js
@@ -0,0 +1 @@
+const i = import
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-trailing-comma.result.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-trailing-comma.result.js
new file mode 100644
index 00000000..0f3bb54d
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-trailing-comma.result.js
@@ -0,0 +1,6 @@
+module.exports = {
+    "index": 13,
+    "lineNumber": 1,
+    "column": 14,
+    "message": "Trailing comma is not allowed in import()"
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-trailing-comma.src.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-trailing-comma.src.js
new file mode 100644
index 00000000..765c6022
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-trailing-comma.src.js
@@ -0,0 +1 @@
+import(source,)
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-wrap-import.result.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-wrap-import.result.js
new file mode 100644
index 00000000..c2746067
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-wrap-import.result.js
@@ -0,0 +1,6 @@
+module.exports = {
+    "index": 7,
+    "lineNumber": 1,
+    "column": 8,
+    "message": "Unexpected token )"
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/invalid-wrap-import.src.js b/tests/fixtures/ecma-version/11/dynamic-import/invalid-wrap-import.src.js
new file mode 100644
index 00000000..f1ff0c4b
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/invalid-wrap-import.src.js
@@ -0,0 +1 @@
+(import)(source)
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/new-import.result.js b/tests/fixtures/ecma-version/11/dynamic-import/new-import.result.js
new file mode 100644
index 00000000..cfa98894
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/new-import.result.js
@@ -0,0 +1,218 @@
+module.exports = {
+    "type": "Program",
+    "loc": {
+        "start": {
+            "line": 1,
+            "column": 0
+        },
+        "end": {
+            "line": 1,
+            "column": 20
+        }
+    },
+    "range": [
+        0,
+        20
+    ],
+    "body": [
+        {
+            "type": "ExpressionStatement",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 20
+                }
+            },
+            "range": [
+                0,
+                20
+            ],
+            "expression": {
+                "type": "NewExpression",
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 0
+                    },
+                    "end": {
+                        "line": 1,
+                        "column": 20
+                    }
+                },
+                "range": [
+                    0,
+                    20
+                ],
+                "callee": {
+                    "type": "ImportExpression",
+                    "loc": {
+                        "start": {
+                            "line": 1,
+                            "column": 5
+                        },
+                        "end": {
+                            "line": 1,
+                            "column": 19
+                        }
+                    },
+                    "range": [
+                        5,
+                        19
+                    ],
+                    "source": {
+                        "type": "Identifier",
+                        "loc": {
+                            "start": {
+                                "line": 1,
+                                "column": 12
+                            },
+                            "end": {
+                                "line": 1,
+                                "column": 18
+                            }
+                        },
+                        "range": [
+                            12,
+                            18
+                        ],
+                        "name": "source"
+                    }
+                },
+                "arguments": []
+            }
+        }
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "type": "Keyword",
+            "value": "new",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 3
+                }
+            },
+            "range": [
+                0,
+                3
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "(",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 4
+                },
+                "end": {
+                    "line": 1,
+                    "column": 5
+                }
+            },
+            "range": [
+                4,
+                5
+            ]
+        },
+        {
+            "type": "Keyword",
+            "value": "import",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 5
+                },
+                "end": {
+                    "line": 1,
+                    "column": 11
+                }
+            },
+            "range": [
+                5,
+                11
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "(",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 11
+                },
+                "end": {
+                    "line": 1,
+                    "column": 12
+                }
+            },
+            "range": [
+                11,
+                12
+            ]
+        },
+        {
+            "type": "Identifier",
+            "value": "source",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 12
+                },
+                "end": {
+                    "line": 1,
+                    "column": 18
+                }
+            },
+            "range": [
+                12,
+                18
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": ")",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 18
+                },
+                "end": {
+                    "line": 1,
+                    "column": 19
+                }
+            },
+            "range": [
+                18,
+                19
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": ")",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 19
+                },
+                "end": {
+                    "line": 1,
+                    "column": 20
+                }
+            },
+            "range": [
+                19,
+                20
+            ]
+        }
+    ]
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/new-import.src.js b/tests/fixtures/ecma-version/11/dynamic-import/new-import.src.js
new file mode 100644
index 00000000..e9255ca5
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/new-import.src.js
@@ -0,0 +1 @@
+new (import(source))
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/with-assign.result.js b/tests/fixtures/ecma-version/11/dynamic-import/with-assign.result.js
new file mode 100644
index 00000000..4d17a100
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/with-assign.result.js
@@ -0,0 +1,219 @@
+module.exports = {
+    "type": "Program",
+    "loc": {
+        "start": {
+            "line": 1,
+            "column": 0
+        },
+        "end": {
+            "line": 1,
+            "column": 25
+        }
+    },
+    "range": [
+        0,
+        25
+    ],
+    "body": [
+        {
+            "type": "ExpressionStatement",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 25
+                }
+            },
+            "range": [
+                0,
+                25
+            ],
+            "expression": {
+                "type": "ImportExpression",
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 0
+                    },
+                    "end": {
+                        "line": 1,
+                        "column": 25
+                    }
+                },
+                "range": [
+                    0,
+                    25
+                ],
+                "source": {
+                    "type": "AssignmentExpression",
+                    "loc": {
+                        "start": {
+                            "line": 1,
+                            "column": 7
+                        },
+                        "end": {
+                            "line": 1,
+                            "column": 24
+                        }
+                    },
+                    "range": [
+                        7,
+                        24
+                    ],
+                    "operator": "=",
+                    "left": {
+                        "type": "Identifier",
+                        "loc": {
+                            "start": {
+                                "line": 1,
+                                "column": 7
+                            },
+                            "end": {
+                                "line": 1,
+                                "column": 13
+                            }
+                        },
+                        "range": [
+                            7,
+                            13
+                        ],
+                        "name": "source"
+                    },
+                    "right": {
+                        "type": "Literal",
+                        "loc": {
+                            "start": {
+                                "line": 1,
+                                "column": 16
+                            },
+                            "end": {
+                                "line": 1,
+                                "column": 24
+                            }
+                        },
+                        "range": [
+                            16,
+                            24
+                        ],
+                        "value": "foo.js",
+                        "raw": "\"foo.js\""
+                    }
+                }
+            }
+        }
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "type": "Keyword",
+            "value": "import",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 6
+                }
+            },
+            "range": [
+                0,
+                6
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "(",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 6
+                },
+                "end": {
+                    "line": 1,
+                    "column": 7
+                }
+            },
+            "range": [
+                6,
+                7
+            ]
+        },
+        {
+            "type": "Identifier",
+            "value": "source",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 7
+                },
+                "end": {
+                    "line": 1,
+                    "column": 13
+                }
+            },
+            "range": [
+                7,
+                13
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "=",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 14
+                },
+                "end": {
+                    "line": 1,
+                    "column": 15
+                }
+            },
+            "range": [
+                14,
+                15
+            ]
+        },
+        {
+            "type": "String",
+            "value": "\"foo.js\"",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 16
+                },
+                "end": {
+                    "line": 1,
+                    "column": 24
+                }
+            },
+            "range": [
+                16,
+                24
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": ")",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 24
+                },
+                "end": {
+                    "line": 1,
+                    "column": 25
+                }
+            },
+            "range": [
+                24,
+                25
+            ]
+        }
+    ]
+};
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/with-assign.src.js b/tests/fixtures/ecma-version/11/dynamic-import/with-assign.src.js
new file mode 100644
index 00000000..f5c12918
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/with-assign.src.js
@@ -0,0 +1 @@
+import(source = "foo.js")
diff --git a/tests/fixtures/ecma-version/11/dynamic-import/with-sequence.result.js b/tests/fixtures/ecma-version/11/dynamic-import/with-sequence.result.js
new file mode 100644
index 00000000..d949f27a
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/with-sequence.result.js
@@ -0,0 +1,255 @@
+module.exports = {
+    "type": "Program",
+    "loc": {
+        "start": {
+            "line": 1,
+            "column": 0
+        },
+        "end": {
+            "line": 1,
+            "column": 23
+        }
+    },
+    "range": [
+        0,
+        23
+    ],
+    "body": [
+        {
+            "type": "ExpressionStatement",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 23
+                }
+            },
+            "range": [
+                0,
+                23
+            ],
+            "expression": {
+                "type": "ImportExpression",
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 0
+                    },
+                    "end": {
+                        "line": 1,
+                        "column": 23
+                    }
+                },
+                "range": [
+                    0,
+                    23
+                ],
+                "source": {
+                    "type": "SequenceExpression",
+                    "loc": {
+                        "start": {
+                            "line": 1,
+                            "column": 8
+                        },
+                        "end": {
+                            "line": 1,
+                            "column": 21
+                        }
+                    },
+                    "range": [
+                        8,
+                        21
+                    ],
+                    "expressions": [
+                        {
+                            "type": "Identifier",
+                            "loc": {
+                                "start": {
+                                    "line": 1,
+                                    "column": 8
+                                },
+                                "end": {
+                                    "line": 1,
+                                    "column": 13
+                                }
+                            },
+                            "range": [
+                                8,
+                                13
+                            ],
+                            "name": "dummy"
+                        },
+                        {
+                            "type": "Identifier",
+                            "loc": {
+                                "start": {
+                                    "line": 1,
+                                    "column": 15
+                                },
+                                "end": {
+                                    "line": 1,
+                                    "column": 21
+                                }
+                            },
+                            "range": [
+                                15,
+                                21
+                            ],
+                            "name": "source"
+                        }
+                    ]
+                }
+            }
+        }
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "type": "Keyword",
+            "value": "import",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 6
+                }
+            },
+            "range": [
+                0,
+                6
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "(",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 6
+                },
+                "end": {
+                    "line": 1,
+                    "column": 7
+                }
+            },
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diff --git a/tests/fixtures/ecma-version/11/dynamic-import/with-sequence.src.js b/tests/fixtures/ecma-version/11/dynamic-import/with-sequence.src.js
new file mode 100644
index 00000000..b989e0a9
--- /dev/null
+++ b/tests/fixtures/ecma-version/11/dynamic-import/with-sequence.src.js
@@ -0,0 +1 @@
+import((dummy, source))
diff --git a/tests/fixtures/ecma-version/6/forOf/for-of-with-function-initializer.result.js b/tests/fixtures/ecma-version/6/forOf/for-of-with-function-initializer.result.js
index 344e65bf..b95a7a0a 100644
--- a/tests/fixtures/ecma-version/6/forOf/for-of-with-function-initializer.result.js
+++ b/tests/fixtures/ecma-version/6/forOf/for-of-with-function-initializer.result.js
@@ -1,710 +1,6 @@
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-                            "name": "i"
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-                        "init": {
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-                            "loc": {
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-                                        "range": [
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-                                                "end": {
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-                                                    "column": 41
-                                                }
-                                            },
-                                            "range": [
-                                                33,
-                                                41
-                                            ],
-                                            "left": {
-                                                "type": "Literal",
-                                                "loc": {
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-                                                        "line": 1,
-                                                        "column": 33
-                                                    },
-                                                    "end": {
-                                                        "line": 1,
-                                                        "column": 35
-                                                    }
-                                                },
-                                                "range": [
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-                                                    35
-                                                ],
-                                                "value": 10,
-                                                "raw": "10"
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-                                            "operator": "in",
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+    index: 5,
+    lineNumber: 1,
+    column: 6,
+    message: "for-of loop variable declaration may not have an initializer"
+};
diff --git a/tests/lib/tester.js b/tests/lib/tester.js
index 048b9280..0d7cd8eb 100644
--- a/tests/lib/tester.js
+++ b/tests/lib/tester.js
@@ -29,6 +29,11 @@ function getRaw(ast) {
             return undefined; // eslint-disable-line no-undefined
         }
 
+        // JSON cannot handle BigInt.
+        if (typeof value === "bigint") {
+            return null;
+        }
+
         return value;
     }));
 }