tools: update ESLint to 5.0.0

This is a new major release of ESLint.

PR-URL: https://github.com/nodejs/node/pull/20855
Reviewed-By: Rich Trott <rtrott@gmail.com>

1 files changed, 74 insertions, 66 deletions

diff --git a/tools/node_modules/eslint/node_modules/acorn/dist/acorn.es.js b/tools/node_modules/eslint/node_modules/acorn/dist/acorn.es.js
index c272a9d052..803febe09f 100644
--- a/tools/node_modules/eslint/node_modules/acorn/dist/acorn.es.js
+++ b/tools/node_modules/eslint/node_modules/acorn/dist/acorn.es.js
@@ -27,8 +27,8 @@ var keywordRelationalOperator = /^in(stanceof)?$/;
 // code point above 128.
 // Generated by `bin/generate-identifier-regex.js`.
 
-var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u0860-\u086a\u08a0-\u08b4\u08b6-\u08bd\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u09fc\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c88\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312e\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fea\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7ae\ua7b0-\ua7b7\ua7f7-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab65\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";
-var nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u08d4-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0afa-\u0aff\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c03\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0d00-\u0d03\u0d3b\u0d3c\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf2-\u1cf4\u1cf7-\u1cf9\u1dc0-\u1df9\u1dfb-\u1dff\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua900-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f";
+var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0560-\u0588\u05d0-\u05ea\u05ef-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u0860-\u086a\u08a0-\u08b4\u08b6-\u08bd\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u09fc\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1878\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c88\u1c90-\u1cba\u1cbd-\u1cbf\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312f\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fef\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7b9\ua7f7-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua8fe\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab65\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";
+var nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u07fd\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u08d3-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u09fe\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0afa-\u0aff\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c04\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0d00-\u0d03\u0d3b\u0d3c\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf2-\u1cf4\u1cf7-\u1cf9\u1dc0-\u1df9\u1dfb-\u1dff\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua8ff-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f";
 
 var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
 var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");
@@ -42,10 +42,10 @@ nonASCIIidentifierStartChars = nonASCIIidentifierChars = null;
 // generated by bin/generate-identifier-regex.js
 
 // eslint-disable-next-line comma-spacing
-var astralIdentifierStartCodes = [0,11,2,25,2,18,2,1,2,14,3,13,35,122,70,52,268,28,4,48,48,31,14,29,6,37,11,29,3,35,5,7,2,4,43,157,19,35,5,35,5,39,9,51,157,310,10,21,11,7,153,5,3,0,2,43,2,1,4,0,3,22,11,22,10,30,66,18,2,1,11,21,11,25,71,55,7,1,65,0,16,3,2,2,2,26,45,28,4,28,36,7,2,27,28,53,11,21,11,18,14,17,111,72,56,50,14,50,785,52,76,44,33,24,27,35,42,34,4,0,13,47,15,3,22,0,2,0,36,17,2,24,85,6,2,0,2,3,2,14,2,9,8,46,39,7,3,1,3,21,2,6,2,1,2,4,4,0,19,0,13,4,159,52,19,3,54,47,21,1,2,0,185,46,42,3,37,47,21,0,60,42,86,25,391,63,32,0,257,0,11,39,8,0,22,0,12,39,3,3,55,56,264,8,2,36,18,0,50,29,113,6,2,1,2,37,22,0,698,921,103,110,18,195,2749,1070,4050,582,8634,568,8,30,114,29,19,47,17,3,32,20,6,18,881,68,12,0,67,12,65,1,31,6124,20,754,9486,286,82,395,2309,106,6,12,4,8,8,9,5991,84,2,70,2,1,3,0,3,1,3,3,2,11,2,0,2,6,2,64,2,3,3,7,2,6,2,27,2,3,2,4,2,0,4,6,2,339,3,24,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,7,4149,196,60,67,1213,3,2,26,2,1,2,0,3,0,2,9,2,3,2,0,2,0,7,0,5,0,2,0,2,0,2,2,2,1,2,0,3,0,2,0,2,0,2,0,2,0,2,1,2,0,3,3,2,6,2,3,2,3,2,0,2,9,2,16,6,2,2,4,2,16,4421,42710,42,4148,12,221,3,5761,15,7472,3104,541];
+var astralIdentifierStartCodes = [0,11,2,25,2,18,2,1,2,14,3,13,35,122,70,52,268,28,4,48,48,31,14,29,6,37,11,29,3,35,5,7,2,4,43,157,19,35,5,35,5,39,9,51,157,310,10,21,11,7,153,5,3,0,2,43,2,1,4,0,3,22,11,22,10,30,66,18,2,1,11,21,11,25,71,55,7,1,65,0,16,3,2,2,2,28,43,28,4,28,36,7,2,27,28,53,11,21,11,18,14,17,111,72,56,50,14,50,14,35,477,28,11,0,9,21,190,52,76,44,33,24,27,35,30,0,12,34,4,0,13,47,15,3,22,0,2,0,36,17,2,24,85,6,2,0,2,3,2,14,2,9,8,46,39,7,3,1,3,21,2,6,2,1,2,4,4,0,19,0,13,4,159,52,19,3,54,47,21,1,2,0,185,46,42,3,37,47,21,0,60,42,86,26,230,43,117,63,32,0,257,0,11,39,8,0,22,0,12,39,3,3,20,0,35,56,264,8,2,36,18,0,50,29,113,6,2,1,2,37,22,0,26,5,2,1,2,31,15,0,328,18,270,921,103,110,18,195,2749,1070,4050,582,8634,568,8,30,114,29,19,47,17,3,32,20,6,18,689,63,129,68,12,0,67,12,65,1,31,6129,15,754,9486,286,82,395,2309,106,6,12,4,8,8,9,5991,84,2,70,2,1,3,0,3,1,3,3,2,11,2,0,2,6,2,64,2,3,3,7,2,6,2,27,2,3,2,4,2,0,4,6,2,339,3,24,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,7,4149,196,60,67,1213,3,2,26,2,1,2,0,3,0,2,9,2,3,2,0,2,0,7,0,5,0,2,0,2,0,2,2,2,1,2,0,3,0,2,0,2,0,2,0,2,0,2,1,2,0,3,3,2,6,2,3,2,3,2,0,2,9,2,16,6,2,2,4,2,16,4421,42710,42,4148,12,221,3,5761,15,7472,3104,541];
 
 // eslint-disable-next-line comma-spacing
-var astralIdentifierCodes = [509,0,227,0,150,4,294,9,1368,2,2,1,6,3,41,2,5,0,166,1,1306,2,54,14,32,9,16,3,46,10,54,9,7,2,37,13,2,9,52,0,13,2,49,13,10,2,4,9,83,11,7,0,161,11,6,9,7,3,57,0,2,6,3,1,3,2,10,0,11,1,3,6,4,4,193,17,10,9,87,19,13,9,214,6,3,8,28,1,83,16,16,9,82,12,9,9,84,14,5,9,423,9,280,9,41,6,2,3,9,0,10,10,47,15,406,7,2,7,17,9,57,21,2,13,123,5,4,0,2,1,2,6,2,0,9,9,19719,9,135,4,60,6,26,9,1016,45,17,3,19723,1,5319,4,4,5,9,7,3,6,31,3,149,2,1418,49,513,54,5,49,9,0,15,0,23,4,2,14,1361,6,2,16,3,6,2,1,2,4,2214,6,110,6,6,9,792487,239];
+var astralIdentifierCodes = [509,0,227,0,150,4,294,9,1368,2,2,1,6,3,41,2,5,0,166,1,574,3,9,9,525,10,176,2,54,14,32,9,16,3,46,10,54,9,7,2,37,13,2,9,6,1,45,0,13,2,49,13,9,3,4,9,83,11,7,0,161,11,6,9,7,3,56,1,2,6,3,1,3,2,10,0,11,1,3,6,4,4,193,17,10,9,5,0,82,19,13,9,214,6,3,8,28,1,83,16,16,9,82,12,9,9,84,14,5,9,243,14,166,9,280,9,41,6,2,3,9,0,10,10,47,15,406,7,2,7,17,9,57,21,2,13,123,5,4,0,2,1,2,6,2,0,9,9,49,4,2,1,2,4,9,9,330,3,19306,9,135,4,60,6,26,9,1016,45,17,3,19723,1,5319,4,4,5,9,7,3,6,31,3,149,2,1418,49,513,54,5,49,9,0,15,0,23,4,2,14,1361,6,2,16,3,6,2,1,2,4,2214,6,110,6,6,9,792487,239];
 
 // This has a complexity linear to the value of the code. The
 // assumption is that looking up astral identifier characters is
@@ -244,8 +244,8 @@ var types = {
 var lineBreak = /\r\n?|\n|\u2028|\u2029/;
 var lineBreakG = new RegExp(lineBreak.source, "g");
 
-function isNewLine(code) {
-  return code === 10 || code === 13 || code === 0x2028 || code === 0x2029
+function isNewLine(code, ecma2019String) {
+  return code === 10 || code === 13 || (!ecma2019String && (code === 0x2028 || code === 0x2029))
 }
 
 var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/;
@@ -336,6 +336,9 @@ var defaultOptions = {
   // When enabled, import/export statements are not constrained to
   // appearing at the top of the program.
   allowImportExportEverywhere: false,
+  // When enabled, await identifiers are allowed to appear at the top-level scope,
+  // but they are still not allowed in non-async functions.
+  allowAwaitOutsideFunction: false,
   // When enabled, hashbang directive in the beginning of file
   // is allowed and treated as a line comment.
   allowHashBang: false,
@@ -443,7 +446,7 @@ var Parser = function Parser(options, input, startPos) {
   if (!options.allowReserved) {
     for (var v = options.ecmaVersion;; v--)
       { if (reserved = reservedWords[v]) { break } }
-    if (options.sourceType == "module") { reserved += " await"; }
+    if (options.sourceType === "module") { reserved += " await"; }
   }
   this.reservedWords = keywordRegexp(reserved);
   var reservedStrict = (reserved ? reserved + " " : "") + reservedWords.strict;
@@ -555,7 +558,7 @@ pp.strictDirective = function(start) {
     start += skipWhiteSpace.exec(this$1.input)[0].length;
     var match = literal.exec(this$1.input.slice(start));
     if (!match) { return false }
-    if ((match[1] || match[2]) == "use strict") { return true }
+    if ((match[1] || match[2]) === "use strict") { return true }
     start += match[0].length;
   }
 };
@@ -616,7 +619,7 @@ pp.semicolon = function() {
 };
 
 pp.afterTrailingComma = function(tokType, notNext) {
-  if (this.type == tokType) {
+  if (this.type === tokType) {
     if (this.options.onTrailingComma)
       { this.options.onTrailingComma(this.lastTokStart, this.lastTokStartLoc); }
     if (!notNext)
@@ -713,7 +716,7 @@ pp$1.isLet = function() {
   skipWhiteSpace.lastIndex = this.pos;
   var skip = skipWhiteSpace.exec(this.input);
   var next = this.pos + skip[0].length, nextCh = this.input.charCodeAt(next);
-  if (nextCh === 91 || nextCh == 123) { return true } // '{' and '['
+  if (nextCh === 91 || nextCh === 123) { return true } // '{' and '['
   if (isIdentifierStart(nextCh, true)) {
     var pos = next + 1;
     while (isIdentifierChar(this.input.charCodeAt(pos), true)) { ++pos; }
@@ -735,7 +738,7 @@ pp$1.isAsyncFunction = function() {
   var next = this.pos + skip[0].length;
   return !lineBreak.test(this.input.slice(this.pos, next)) &&
     this.input.slice(next, next + 8) === "function" &&
-    (next + 8 == this.input.length || !isIdentifierChar(this.input.charAt(next + 8)))
+    (next + 8 === this.input.length || !isIdentifierChar(this.input.charAt(next + 8)))
 };
 
 // Parse a single statement.
@@ -775,7 +778,7 @@ pp$1.parseStatement = function(declaration, topLevel, exports) {
   case types._try: return this.parseTryStatement(node)
   case types._const: case types._var:
     kind = kind || this.value;
-    if (!declaration && kind != "var") { this.unexpected(); }
+    if (!declaration && kind !== "var") { this.unexpected(); }
     return this.parseVarStatement(node, kind)
   case types._while: return this.parseWhileStatement(node)
   case types._with: return this.parseWithStatement(node)
@@ -813,7 +816,7 @@ pp$1.parseStatement = function(declaration, topLevel, exports) {
 pp$1.parseBreakContinueStatement = function(node, keyword) {
   var this$1 = this;
 
-  var isBreak = keyword == "break";
+  var isBreak = keyword === "break";
   this.next();
   if (this.eat(types.semi) || this.insertSemicolon()) { node.label = null; }
   else if (this.type !== types.name) { this.unexpected(); }
@@ -919,8 +922,8 @@ pp$1.parseIfStatement = function(node) {
   this.next();
   node.test = this.parseParenExpression();
   // allow function declarations in branches, but only in non-strict mode
-  node.consequent = this.parseStatement(!this.strict && this.type == types._function);
-  node.alternate = this.eat(types._else) ? this.parseStatement(!this.strict && this.type == types._function) : null;
+  node.consequent = this.parseStatement(!this.strict && this.type === types._function);
+  node.alternate = this.eat(types._else) ? this.parseStatement(!this.strict && this.type === types._function) : null;
   return this.finishNode(node, "IfStatement")
 };
 
@@ -953,7 +956,7 @@ pp$1.parseSwitchStatement = function(node) {
   // adding statements to.
 
   var cur;
-  for (var sawDefault = false; this.type != types.braceR;) {
+  for (var sawDefault = false; this.type !== types.braceR;) {
     if (this$1.type === types._case || this$1.type === types._default) {
       var isCase = this$1.type === types._case;
       if (cur) { this$1.finishNode(cur, "SwitchCase"); }
@@ -1000,11 +1003,16 @@ pp$1.parseTryStatement = function(node) {
   if (this.type === types._catch) {
     var clause = this.startNode();
     this.next();
-    this.expect(types.parenL);
-    clause.param = this.parseBindingAtom();
-    this.enterLexicalScope();
-    this.checkLVal(clause.param, "let");
-    this.expect(types.parenR);
+    if (this.eat(types.parenL)) {
+      clause.param = this.parseBindingAtom();
+      this.enterLexicalScope();
+      this.checkLVal(clause.param, "let");
+      this.expect(types.parenR);
+    } else {
+      if (this.options.ecmaVersion < 10) { this.unexpected(); }
+      clause.param = null;
+      this.enterLexicalScope();
+    }
     clause.body = this.parseBlock(false);
     this.exitLexicalScope();
     node.handler = this.finishNode(clause, "CatchClause");
@@ -1057,7 +1065,7 @@ pp$1.parseLabeledStatement = function(node, maybeName, expr) {
   var kind = this.type.isLoop ? "loop" : this.type === types._switch ? "switch" : null;
   for (var i = this.labels.length - 1; i >= 0; i--) {
     var label$1 = this$1.labels[i];
-    if (label$1.statementStart == node.start) {
+    if (label$1.statementStart === node.start) {
       // Update information about previous labels on this node
       label$1.statementStart = this$1.start;
       label$1.kind = kind;
@@ -1065,9 +1073,9 @@ pp$1.parseLabeledStatement = function(node, maybeName, expr) {
   }
   this.labels.push({name: maybeName, kind: kind, statementStart: this.start});
   node.body = this.parseStatement(true);
-  if (node.body.type == "ClassDeclaration" ||
-      node.body.type == "VariableDeclaration" && node.body.kind != "var" ||
-      node.body.type == "FunctionDeclaration" && (this.strict || node.body.generator))
+  if (node.body.type === "ClassDeclaration" ||
+      node.body.type === "VariableDeclaration" && node.body.kind !== "var" ||
+      node.body.type === "FunctionDeclaration" && (this.strict || node.body.generator))
     { this.raiseRecoverable(node.body.start, "Invalid labeled declaration"); }
   this.labels.pop();
   node.label = expr;
@@ -1127,14 +1135,14 @@ pp$1.parseFor = function(node, init) {
 pp$1.parseForIn = function(node, init) {
   var type = this.type === types._in ? "ForInStatement" : "ForOfStatement";
   this.next();
-  if (type == "ForInStatement") {
+  if (type === "ForInStatement") {
     if (init.type === "AssignmentPattern" ||
       (init.type === "VariableDeclaration" && init.declarations[0].init != null &&
        (this.strict || init.declarations[0].id.type !== "Identifier")))
       { this.raise(init.start, "Invalid assignment in for-in loop head"); }
   }
   node.left = init;
-  node.right = type == "ForInStatement" ? this.parseExpression() : this.parseMaybeAssign();
+  node.right = type === "ForInStatement" ? this.parseExpression() : this.parseMaybeAssign();
   this.expect(types.parenR);
   this.exitLexicalScope();
   node.body = this.parseStatement(false);
@@ -1156,7 +1164,7 @@ pp$1.parseVar = function(node, isFor, kind) {
       decl.init = this$1.parseMaybeAssign(isFor);
     } else if (kind === "const" && !(this$1.type === types._in || (this$1.options.ecmaVersion >= 6 && this$1.isContextual("of")))) {
       this$1.unexpected();
-    } else if (decl.id.type != "Identifier" && !(isFor && (this$1.type === types._in || this$1.isContextual("of")))) {
+    } else if (decl.id.type !== "Identifier" && !(isFor && (this$1.type === types._in || this$1.isContextual("of")))) {
       this$1.raise(this$1.lastTokEnd, "Complex binding patterns require an initialization value");
     } else {
       decl.init = null;
@@ -1183,7 +1191,7 @@ pp$1.parseFunction = function(node, isStatement, allowExpressionBody, isAsync) {
     { node.async = !!isAsync; }
 
   if (isStatement) {
-    node.id = isStatement === "nullableID" && this.type != types.name ? null : this.parseIdent();
+    node.id = isStatement === "nullableID" && this.type !== types.name ? null : this.parseIdent();
     if (node.id) {
       this.checkLVal(node.id, "var");
     }
@@ -1199,7 +1207,7 @@ pp$1.parseFunction = function(node, isStatement, allowExpressionBody, isAsync) {
   this.enterFunctionScope();
 
   if (!isStatement)
-    { node.id = this.type == types.name ? this.parseIdent() : null; }
+    { node.id = this.type === types.name ? this.parseIdent() : null; }
 
   this.parseFunctionParams(node);
   this.parseFunctionBody(node, allowExpressionBody);
@@ -1383,28 +1391,28 @@ pp$1.checkPatternExport = function(exports, pat) {
   var this$1 = this;
 
   var type = pat.type;
-  if (type == "Identifier")
+  if (type === "Identifier")
     { this.checkExport(exports, pat.name, pat.start); }
-  else if (type == "ObjectPattern")
+  else if (type === "ObjectPattern")
     { for (var i = 0, list = pat.properties; i < list.length; i += 1)
       {
         var prop = list[i];
 
         this$1.checkPatternExport(exports, prop);
       } }
-  else if (type == "ArrayPattern")
+  else if (type === "ArrayPattern")
     { for (var i$1 = 0, list$1 = pat.elements; i$1 < list$1.length; i$1 += 1) {
       var elt = list$1[i$1];
 
         if (elt) { this$1.checkPatternExport(exports, elt); }
     } }
-  else if (type == "Property")
+  else if (type === "Property")
     { this.checkPatternExport(exports, pat.value); }
-  else if (type == "AssignmentPattern")
+  else if (type === "AssignmentPattern")
     { this.checkPatternExport(exports, pat.left); }
-  else if (type == "RestElement")
+  else if (type === "RestElement")
     { this.checkPatternExport(exports, pat.argument); }
-  else if (type == "ParenthesizedExpression")
+  else if (type === "ParenthesizedExpression")
     { this.checkPatternExport(exports, pat.expression); }
 };
 
@@ -1571,7 +1579,7 @@ pp$2.toAssignable = function(node, isBinding, refDestructuringErrors) {
       break
 
     case "Property":
-      // AssignmentProperty has type == "Property"
+      // AssignmentProperty has type === "Property"
       if (node.kind !== "init") { this.raise(node.key.start, "Object pattern can't contain getter or setter"); }
       this.toAssignable(node.value, isBinding);
       break
@@ -1761,7 +1769,7 @@ pp$2.checkLVal = function(expr, bindingType, checkClashes) {
     break
 
   case "Property":
-    // AssignmentProperty has type == "Property"
+    // AssignmentProperty has type === "Property"
     this.checkLVal(expr.value, bindingType, checkClashes);
     break
 
@@ -1906,7 +1914,7 @@ pp$3.parseMaybeAssign = function(noIn, refDestructuringErrors, afterLeftParse) {
   }
 
   var startPos = this.start, startLoc = this.startLoc;
-  if (this.type == types.parenL || this.type == types.name)
+  if (this.type === types.parenL || this.type === types.name)
     { this.potentialArrowAt = this.start; }
   var left = this.parseMaybeConditional(noIn, refDestructuringErrors);
   if (afterLeftParse) { left = afterLeftParse.call(this, left, startPos, startLoc); }
@@ -1951,7 +1959,7 @@ pp$3.parseExprOps = function(noIn, refDestructuringErrors) {
   var startPos = this.start, startLoc = this.startLoc;
   var expr = this.parseMaybeUnary(refDestructuringErrors, false);
   if (this.checkExpressionErrors(refDestructuringErrors)) { return expr }
-  return expr.start == startPos && expr.type === "ArrowFunctionExpression" ? expr : this.parseExprOp(expr, startPos, startLoc, -1, noIn)
+  return expr.start === startPos && expr.type === "ArrowFunctionExpression" ? expr : this.parseExprOp(expr, startPos, startLoc, -1, noIn)
 };
 
 // Parse binary operators with the operator precedence parsing
@@ -1990,7 +1998,7 @@ pp$3.parseMaybeUnary = function(refDestructuringErrors, sawUnary) {
   var this$1 = this;
 
   var startPos = this.start, startLoc = this.startLoc, expr;
-  if (this.inAsync && this.isContextual("await")) {
+  if (this.isContextual("await") && (this.inAsync || (!this.inFunction && this.options.allowAwaitOutsideFunction))) {
     expr = this.parseAwait();
     sawUnary = true;
   } else if (this.type.prefix) {
@@ -2045,7 +2053,7 @@ pp$3.parseSubscripts = function(base, startPos, startLoc, noCalls) {
   var this$1 = this;
 
   var maybeAsyncArrow = this.options.ecmaVersion >= 8 && base.type === "Identifier" && base.name === "async" &&
-      this.lastTokEnd == base.end && !this.canInsertSemicolon() && this.input.slice(base.start, base.end) === "async";
+      this.lastTokEnd === base.end && !this.canInsertSemicolon() && this.input.slice(base.start, base.end) === "async";
   for (var computed = (void 0);;) {
     if ((computed = this$1.eat(types.bracketL)) || this$1.eat(types.dot)) {
       var node = this$1.startNodeAt(startPos, startLoc);
@@ -2090,7 +2098,7 @@ pp$3.parseSubscripts = function(base, startPos, startLoc, noCalls) {
 // or `{}`.
 
 pp$3.parseExprAtom = function(refDestructuringErrors) {
-  var node, canBeArrow = this.potentialArrowAt == this.start;
+  var node, canBeArrow = this.potentialArrowAt === this.start;
   switch (this.type) {
   case types._super:
     if (!this.inFunction)
@@ -2435,7 +2443,7 @@ pp$3.parsePropertyValue = function(prop, isPattern, isGenerator, isAsync, startP
   } else if (!isPattern && !containsEsc &&
              this.options.ecmaVersion >= 5 && !prop.computed && prop.key.type === "Identifier" &&
              (prop.key.name === "get" || prop.key.name === "set") &&
-             (this.type != types.comma && this.type != types.braceR)) {
+             (this.type !== types.comma && this.type !== types.braceR)) {
     if (isGenerator || isAsync) { this.unexpected(); }
     prop.kind = prop.key.name;
     this.parsePropertyName(prop);
@@ -2664,7 +2672,7 @@ pp$3.checkUnreserved = function(ref) {
   if (this.isKeyword(name))
     { this.raise(start, ("Unexpected keyword '" + name + "'")); }
   if (this.options.ecmaVersion < 6 &&
-    this.input.slice(start, end).indexOf("\\") != -1) { return }
+    this.input.slice(start, end).indexOf("\\") !== -1) { return }
   var re = this.strict ? this.reservedWordsStrict : this.reservedWords;
   if (re.test(name)) {
     if (!this.inAsync && name === "await")
@@ -2679,7 +2687,7 @@ pp$3.checkUnreserved = function(ref) {
 
 pp$3.parseIdent = function(liberal, isBinding) {
   var node = this.startNode();
-  if (liberal && this.options.allowReserved == "never") { liberal = false; }
+  if (liberal && this.options.allowReserved === "never") { liberal = false; }
   if (this.type === types.name) {
     node.name = this.value;
   } else if (this.type.keyword) {
@@ -2709,7 +2717,7 @@ pp$3.parseYield = function() {
 
   var node = this.startNode();
   this.next();
-  if (this.type == types.semi || this.canInsertSemicolon() || (this.type != types.star && !this.type.startsExpr)) {
+  if (this.type === types.semi || this.canInsertSemicolon() || (this.type !== types.star && !this.type.startsExpr)) {
     node.delegate = false;
     node.argument = null;
   } else {
@@ -2916,13 +2924,13 @@ pp$7.braceIsBlock = function(prevType) {
   // The check for `tt.name && exprAllowed` detects whether we are
   // after a `yield` or `of` construct. See the `updateContext` for
   // `tt.name`.
-  if (prevType === types._return || prevType == types.name && this.exprAllowed)
+  if (prevType === types._return || prevType === types.name && this.exprAllowed)
     { return lineBreak.test(this.input.slice(this.lastTokEnd, this.start)) }
-  if (prevType === types._else || prevType === types.semi || prevType === types.eof || prevType === types.parenR || prevType == types.arrow)
+  if (prevType === types._else || prevType === types.semi || prevType === types.eof || prevType === types.parenR || prevType === types.arrow)
     { return true }
-  if (prevType == types.braceL)
+  if (prevType === types.braceL)
     { return parent === types$1.b_stat }
-  if (prevType == types._var || prevType == types.name)
+  if (prevType === types._var || prevType === types.name)
     { return false }
   return !this.exprAllowed
 };
@@ -2940,7 +2948,7 @@ pp$7.inGeneratorContext = function() {
 
 pp$7.updateContext = function(prevType) {
   var update, type = this.type;
-  if (type.keyword && prevType == types.dot)
+  if (type.keyword && prevType === types.dot)
     { this.exprAllowed = false; }
   else if (update = type.updateContext)
     { update.call(this, prevType); }
@@ -2951,7 +2959,7 @@ pp$7.updateContext = function(prevType) {
 // Token-specific context update code
 
 types.parenR.updateContext = types.braceR.updateContext = function() {
-  if (this.context.length == 1) {
+  if (this.context.length === 1) {
     this.exprAllowed = true;
     return
   }
@@ -3000,7 +3008,7 @@ types.backQuote.updateContext = function() {
 };
 
 types.star.updateContext = function(prevType) {
-  if (prevType == types._function) {
+  if (prevType === types._function) {
     var index = this.context.length - 1;
     if (this.context[index] === types$1.f_expr)
       { this.context[index] = types$1.f_expr_gen; }
@@ -3013,8 +3021,8 @@ types.star.updateContext = function(prevType) {
 types.name.updateContext = function(prevType) {
   var allowed = false;
   if (this.options.ecmaVersion >= 6) {
-    if (this.value == "of" && !this.exprAllowed ||
-        this.value == "yield" && this.inGeneratorContext())
+    if (this.value === "of" && !this.exprAllowed ||
+        this.value === "yield" && this.inGeneratorContext())
       { allowed = true; }
   }
   this.exprAllowed = allowed;
@@ -3583,7 +3591,7 @@ pp$9.validateRegExpFlags = function(state) {
 
   for (var i = 0; i < flags.length; i++) {
     var flag = flags.charAt(i);
-    if (validFlags.indexOf(flag) == -1) {
+    if (validFlags.indexOf(flag) === -1) {
       this$1.raise(state.start, "Invalid regular expression flag");
     }
     if (flags.indexOf(flag, i + 1) > -1) {
@@ -4749,7 +4757,7 @@ pp$8.readToken_mult_modulo_exp = function(code) { // '%*'
   var tokentype = code === 42 ? types.star : types.modulo;
 
   // exponentiation operator ** and **=
-  if (this.options.ecmaVersion >= 7 && code == 42 && next === 42) {
+  if (this.options.ecmaVersion >= 7 && code === 42 && next === 42) {
     ++size;
     tokentype = types.starstar;
     next = this.input.charCodeAt(this.pos + 2);
@@ -4775,7 +4783,7 @@ pp$8.readToken_caret = function() { // '^'
 pp$8.readToken_plus_min = function(code) { // '+-'
   var next = this.input.charCodeAt(this.pos + 1);
   if (next === code) {
-    if (next == 45 && !this.inModule && this.input.charCodeAt(this.pos + 2) == 62 &&
+    if (next === 45 && !this.inModule && this.input.charCodeAt(this.pos + 2) === 62 &&
         (this.lastTokEnd === 0 || lineBreak.test(this.input.slice(this.lastTokEnd, this.pos)))) {
       // A `-->` line comment
       this.skipLineComment(3);
@@ -4796,8 +4804,8 @@ pp$8.readToken_lt_gt = function(code) { // '<>'
     if (this.input.charCodeAt(this.pos + size) === 61) { return this.finishOp(types.assign, size + 1) }
     return this.finishOp(types.bitShift, size)
   }
-  if (next == 33 && code == 60 && !this.inModule && this.input.charCodeAt(this.pos + 2) == 45 &&
-      this.input.charCodeAt(this.pos + 3) == 45) {
+  if (next === 33 && code === 60 && !this.inModule && this.input.charCodeAt(this.pos + 2) === 45 &&
+      this.input.charCodeAt(this.pos + 3) === 45) {
     // `<!--`, an XML-style comment that should be interpreted as a line comment
     this.skipLineComment(4);
     this.skipSpace();
@@ -5031,7 +5039,7 @@ pp$8.readString = function(quote) {
       out += this$1.readEscapedChar(false);
       chunkStart = this$1.pos;
     } else {
-      if (isNewLine(ch)) { this$1.raise(this$1.start, "Unterminated string constant"); }
+      if (isNewLine(ch, this$1.options.ecmaVersion >= 10)) { this$1.raise(this$1.start, "Unterminated string constant"); }
       ++this$1.pos;
     }
   }
@@ -5167,7 +5175,7 @@ pp$8.readEscapedChar = function(inTemplate) {
       }
       this.pos += octalStr.length - 1;
       ch = this.input.charCodeAt(this.pos);
-      if ((octalStr !== "0" || ch == 56 || ch == 57) && (this.strict || inTemplate)) {
+      if ((octalStr !== "0" || ch === 56 || ch === 57) && (this.strict || inTemplate)) {
         this.invalidStringToken(
           this.pos - 1 - octalStr.length,
           inTemplate
@@ -5210,7 +5218,7 @@ pp$8.readWord1 = function() {
       this$1.containsEsc = true;
       word += this$1.input.slice(chunkStart, this$1.pos);
       var escStart = this$1.pos;
-      if (this$1.input.charCodeAt(++this$1.pos) != 117) // "u"
+      if (this$1.input.charCodeAt(++this$1.pos) !== 117) // "u"
         { this$1.invalidStringToken(this$1.pos, "Expecting Unicode escape sequence \\uXXXX"); }
       ++this$1.pos;
       var esc = this$1.readCodePoint();
@@ -5260,7 +5268,7 @@ pp$8.readWord = function() {
 // [dammit]: acorn_loose.js
 // [walk]: util/walk.js
 
-var version = "5.5.3";
+var version = "5.7.1";
 
 // The main exported interface (under `self.acorn` when in the
 // browser) is a `parse` function that takes a code string and