[
{"source": "/",                        "context": ["operator"], "expected": ["Slash"]},
{"source": "/=",                       "context": ["operator"], "expected": ["SlashAssign"]},
{"source": "/x/g",                     "context": [],           "expected": ["RegExp", "x", "g"]},
{"source": "/=x/g",                    "context": [],           "expected": ["RegExp", "=x", "g"]},
{"source": "// stuff\nx",              "context": [],           "expected": ["Identifier", "x"]},
{"source": "/* stuff */\nx",           "context": [],           "expected": ["Identifier", "x"]},
{"source": "/* stuff\nthings */\nx",   "context": [],           "expected": ["Identifier", "x"]},
{"source": "\n/* stuff\nthings */\nx", "context": [],           "expected": ["Identifier", "x"]},

{"source": "12in",   "context": [], "error": "unexpected char"},
{"source": "0xG",    "context": [], "error": "unexpected char"},
{"source": "0xAG",   "context": [], "error": "unexpected char"},
{"source": "0o8",    "context": [], "error": "unexpected char"},
{"source": "0o18",   "context": [], "error": "unexpected char"},
{"source": "0b2",    "context": [], "error": "unexpected char"},
{"source": "0b12",   "context": [], "error": "unexpected char"},

{"source": "0xa",    "context": [], "expected": ["HexInt", "x", "a"]},
{"source": "0Xa",    "context": [], "expected": ["HexInt", "X", "a"]},
{"source": "0xAB",   "context": [], "expected": ["HexInt", "x", "AB"]},
{"source": "0XAB",   "context": [], "expected": ["HexInt", "X", "AB"]},
{"source": "0o7",    "context": [], "expected": ["OctalInt", "o", "7"]},
{"source": "0O7",    "context": [], "expected": ["OctalInt", "O", "7"]},
{"source": "0o12",   "context": [], "expected": ["OctalInt", "o", "12"]},
{"source": "0O12",   "context": [], "expected": ["OctalInt", "O", "12"]},
{"source": "0b1",    "context": [], "expected": ["BinaryInt", "b", "1"]},
{"source": "0B1",    "context": [], "expected": ["BinaryInt", "B", "1"]},
{"source": "0b11",   "context": [], "expected": ["BinaryInt", "b", "11"]},
{"source": "0B11",   "context": [], "expected": ["BinaryInt", "B", "11"]},
{"source": "12",     "context": [], "expected": ["DecimalInt", "12", null]},
{"source": "0",      "context": [], "expected": ["DecimalInt", "0", null]},
{"source": "00",     "context": [], "expected": ["OctalInt", null, "0"]},
{"source": "000",    "context": [], "expected": ["OctalInt", null, "00"]},
{"source": "01",     "context": [], "expected": ["OctalInt", null, "1"]},
{"source": "0755",   "context": [], "expected": ["OctalInt", null, "755"]},
{"source": "0888",   "context": [], "expected": ["DecimalInt", "0888", null]},

{"source": "10e9",   "context": [], "expected": ["DecimalInt", "10", ["e", null, "9"]]},
{"source": "10e+9",  "context": [], "expected": ["DecimalInt", "10", ["e", "+",  "9"]]},
{"source": "10e-9",  "context": [], "expected": ["DecimalInt", "10", ["e", "-",  "9"]]},
{"source": "10E9",   "context": [], "expected": ["DecimalInt", "10", ["E", null, "9"]]},
{"source": "10E+9",  "context": [], "expected": ["DecimalInt", "10", ["E", "+",  "9"]]},
{"source": "10E-9",  "context": [], "expected": ["DecimalInt", "10", ["E", "-",  "9"]]},

{"source": "1.2",    "context": [], "expected": ["Float", "1", "2", null]},
{"source": "1.2e9",  "context": [], "expected": ["Float", "1", "2", ["e", null, "9"]]},
{"source": "1.2e+9", "context": [], "expected": ["Float", "1", "2", ["e", "+",  "9"]]},
{"source": "1.2e-9", "context": [], "expected": ["Float", "1", "2", ["e", "-",  "9"]]},
{"source": "1.2E9",  "context": [], "expected": ["Float", "1", "2", ["E", null, "9"]]},
{"source": "1.2E+9", "context": [], "expected": ["Float", "1", "2", ["E", "+",  "9"]]},
{"source": "1.2E-9", "context": [], "expected": ["Float", "1", "2", ["E", "-",  "9"]]},

{"source": ".12",    "context": [], "expected": ["Float", null, "12", null]},
{"source": ".12e9",  "context": [], "expected": ["Float", null, "12", ["e", null, "9"]]},
{"source": ".12e+9", "context": [], "expected": ["Float", null, "12", ["e", "+",  "9"]]},
{"source": ".12e-9", "context": [], "expected": ["Float", null, "12", ["e", "-",  "9"]]},
{"source": ".12E9",  "context": [], "expected": ["Float", null, "12", ["E", null, "9"]]},
{"source": ".12E+9", "context": [], "expected": ["Float", null, "12", ["E", "+",  "9"]]},
{"source": ".12E-9", "context": [], "expected": ["Float", null, "12", ["E", "-",  "9"]]},

{"source": "12.",    "context": [], "expected": ["Float", "12", "",   null]},
{"source": "0.",     "context": [], "expected": ["Float", "0",  "",   null]},

{"source": "12.e9",  "context": [], "expected": ["Float", "12", "",   ["e", null, "9"]]},
{"source": "12.e+9", "context": [], "expected": ["Float", "12", "",   ["e", "+",  "9"]]},
{"source": "12.e-9", "context": [], "expected": ["Float", "12", "",   ["e", "-",  "9"]]},
{"source": "12.E9",  "context": [], "expected": ["Float", "12", "",   ["E", null, "9"]]},
{"source": "12.E+9", "context": [], "expected": ["Float", "12", "",   ["E", "+",  "9"]]},
{"source": "12.E-9", "context": [], "expected": ["Float", "12", "",   ["E", "-",  "9"]]},

{"source": "0e9",    "context": [], "expected": ["DecimalInt", "0",  ["e", null, "9"]]},
{"source": "0e+9",   "context": [], "expected": ["DecimalInt", "0",  ["e", "+",  "9"]]},
{"source": "0e-9",   "context": [], "expected": ["DecimalInt", "0",  ["e", "-",  "9"]]},
{"source": "0E9",    "context": [], "expected": ["DecimalInt", "0",  ["E", null, "9"]]},
{"source": "0E+9",   "context": [], "expected": ["DecimalInt", "0",  ["E", "+",  "9"]]},
{"source": "0E-9",   "context": [], "expected": ["DecimalInt", "0",  ["E", "-",  "9"]]},

{"source": "00e9",   "context": [], "error": "unexpected char"},
{"source": "00e+9",  "context": [], "error": "unexpected char"},
{"source": "00e-9",  "context": [], "error": "unexpected char"},
{"source": "00E9",   "context": [], "error": "unexpected char"},
{"source": "00E+9",  "context": [], "error": "unexpected char"},
{"source": "00E-9",  "context": [], "error": "unexpected char"},

{"source": ".",   "context": [], "expected": ["Dot"]},
{"source": "{",   "context": [], "expected": ["LBrace"]},
{"source": "}",   "context": [], "expected": ["RBrace"]},
{"source": "[",   "context": [], "expected": ["LBrack"]},
{"source": "]",   "context": [], "expected": ["RBrack"]},
{"source": "(",   "context": [], "expected": ["LParen"]},
{"source": ")",   "context": [], "expected": ["RParen"]},
{"source": ";",   "context": [], "expected": ["Semi"]},
{"source": ":",   "context": [], "expected": ["Colon"]},
{"source": ",",   "context": [], "expected": ["Comma"]},

{"source": "<",    "context": ["operator"], "expected": ["LAngle"]},
{"source": "<=",   "context": ["operator"], "expected": ["LEq"]},
{"source": "<<",   "context": ["operator"], "expected": ["LShift"]},
{"source": "<<=",  "context": ["operator"], "expected": ["LShiftAssign"]},
{"source": ">",    "context": ["operator"], "expected": ["RAngle"]},
{"source": ">=",   "context": ["operator"], "expected": ["GEq"]},
{"source": ">>",   "context": ["operator"], "expected": ["RShift"]},
{"source": ">>>",  "context": ["operator"], "expected": ["URShift"]},
{"source": ">>=",  "context": ["operator"], "expected": ["RShiftAssign"]},
{"source": ">>>=", "context": ["operator"], "expected": ["URShiftAssign"]},

{"source": "=",   "context": ["operator"], "expected": ["Assign"]},
{"source": "==",  "context": ["operator"], "expected": ["Eq"]},
{"source": "===", "context": ["operator"], "expected": ["StrictEq"]},

{"source": "!",   "context": ["operator"], "expected": ["Bang"]},
{"source": "!=",  "context": ["operator"], "expected": ["NEq"]},
{"source": "!==", "context": ["operator"], "expected": ["StrictNEq"]},

{"source": "+",  "context": ["operator"], "expected": ["Plus"]},
{"source": "+=", "context": ["operator"], "expected": ["PlusAssign"]},
{"source": "++", "context": ["operator"], "expected": ["Inc"]},

{"source": "-",  "context": ["operator"], "expected": ["Minus"]},
{"source": "-=", "context": ["operator"], "expected": ["MinusAssign"]},
{"source": "--", "context": ["operator"], "expected": ["Dec"]},

{"source": "*",  "context": ["operator"], "expected": ["Star"]},
{"source": "*=", "context": ["operator"], "expected": ["StarAssign"]},

{"source": "%",  "context": ["operator"], "expected": ["Mod"]},
{"source": "%=", "context": ["operator"], "expected": ["ModAssign"]},

{"source": "^",  "context": ["operator"], "expected": ["BitXor"]},
{"source": "^=", "context": ["operator"], "expected": ["BitXorAssign"]},

{"source": "&",  "context": ["operator"], "expected": ["BitAnd"]},
{"source": "&=", "context": ["operator"], "expected": ["BitAndAssign"]},
{"source": "&&", "context": ["operator"], "expected": ["LogicalAnd"]},

{"source": "|",  "context": ["operator"], "expected": ["BitOr"]},
{"source": "|=", "context": ["operator"], "expected": ["BitOrAssign"]},
{"source": "||", "context": ["operator"], "expected": ["LogicalOr"]},

{"source": "~", "context": ["operator"], "expected": ["Tilde"]},
{"source": "?", "context": ["operator"], "expected": ["Question"]},

{"source": "foo",                         "context": [], "expected": ["Identifier", "foo"]},
{"source": "\\u0066\\u006f\\u006f",       "context": [], "expected": ["Identifier", "foo"]},
{"source": "\\u{0066}\\u{006f}\\u{006f}", "context": [], "expected": ["Identifier", "foo"]},
{"source": "$",                           "context": [], "expected": ["Identifier", "$"]},
{"source": "_",                           "context": [], "expected": ["Identifier", "_"]},
{"source": "a",                           "context": [], "expected": ["Identifier", "a"]},
{"source": "a1",                          "context": [], "expected": ["Identifier", "a1"]},

{"source": "'foo'",                       "context": [], "expected": ["String", "foo"]},
{"source": "'\"foo\"'",                   "context": [], "expected": ["String", "\"foo\""]},
{"source": "'\\\"foo\\\"'",               "context": [], "expected": ["String", "\"foo\""]},

{"source": "\"foo\"",                     "context": [], "expected": ["String", "foo"]},
{"source": "\"'foo'\"",                   "context": [], "expected": ["String", "'foo'"]},
{"source": "\"\\'foo\\'\"",               "context": [], "expected": ["String", "'foo'"]},

{"source": "'\\u0066\\u006f\\u006f'",       "context": [], "expected": ["String", "foo"]},
{"source": "'\\u{0066}\\u{006f}\\u{006f}'", "context": [], "expected": ["String", "foo"]},
{"source": "'\\u{66}\\u{6f}\\u{6f}'",       "context": [], "expected": ["String", "foo"]},
{"source": "'\\146\\157\\157'",             "context": [], "expected": ["String", "foo"]},

{"source": "\"hello\\\nworld\"",            "context": [], "expected": ["String", "helloworld"]},
{"source": "\"hello\\\rworld\"",            "context": [], "expected": ["String", "helloworld"]},
{"source": "\"hello\\\r\nworld\"",          "context": [], "expected": ["String", "helloworld"]},
{"source": "\"hello\\\n\nworld\"",          "context": [], "error": "unexpected char"},
{"source": "\"hello\\\r\rworld\"",          "context": [], "error": "unexpected char"},
{"source": "\"hello\\\r\n\rworld\"",        "context": [], "error": "unexpected char"},
{"source": "\"hello\\\r\n\nworld\"",        "context": [], "error": "unexpected char"},

{"source": "null",  "context": [], "expected": ["Reserved", "Null"]}
]