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grammar.json
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grammar.json
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{
"javascript": {
"grammar": {
"array_literals": {
"__compat": {
"description": "Array literals (<code>[1, 2, 3]</code>)",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Array_literals",
"spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-expressions.html#sec-array-initializer",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": "18"
},
"deno": {
"version_added": "1.0"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "1"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "4"
},
"nodejs": {
"version_added": "0.10.0"
},
"opera": {
"version_added": "4"
},
"opera_android": {
"version_added": "10.1"
},
"safari": {
"version_added": "1"
},
"safari_ios": {
"version_added": "1"
},
"samsunginternet_android": {
"version_added": "1.0"
},
"webview_android": {
"version_added": "1"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"binary_numeric_literals": {
"__compat": {
"description": "Binary numeric literals (<code>0b</code>)",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Binary",
"spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#prod-BinaryIntegerLiteral",
"support": {
"chrome": {
"version_added": "41"
},
"chrome_android": {
"version_added": "41"
},
"deno": {
"version_added": "1.0"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "25"
},
"firefox_android": {
"version_added": "25"
},
"ie": {
"version_added": false
},
"nodejs": [
{
"version_added": "4.0.0"
},
{
"version_added": "0.12.0",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "28"
},
"opera_android": {
"version_added": "28"
},
"safari": {
"version_added": "9"
},
"safari_ios": {
"version_added": "9"
},
"samsunginternet_android": {
"version_added": "4.0"
},
"webview_android": {
"version_added": "41"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"boolean_literals": {
"__compat": {
"description": "Boolean literals (<code>true</code>/<code>false</code>)",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Boolean_literal",
"spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#sec-boolean-literals",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": "18"
},
"deno": {
"version_added": "1.0"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "1"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "3"
},
"nodejs": {
"version_added": "0.10.0"
},
"opera": {
"version_added": "3"
},
"opera_android": {
"version_added": "10.1"
},
"safari": {
"version_added": "1"
},
"safari_ios": {
"version_added": "1"
},
"samsunginternet_android": {
"version_added": "1.0"
},
"webview_android": {
"version_added": "1"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"decimal_numeric_literals": {
"__compat": {
"description": "Decimal numeric literals (<code>1234567890</code>)",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Decimal",
"spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#prod-DecimalLiteral",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": "18"
},
"deno": {
"version_added": "1.0"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "1"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "3"
},
"nodejs": {
"version_added": "0.10.0"
},
"opera": {
"version_added": "3"
},
"opera_android": {
"version_added": "10.1"
},
"safari": {
"version_added": "1"
},
"safari_ios": {
"version_added": "1"
},
"samsunginternet_android": {
"version_added": "1.0"
},
"webview_android": {
"version_added": "1"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"hashbang_comments": {
"__compat": {
"description": "Hashbang (<code>#!</code>) comment syntax",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Hashbang_comments",
"spec_url": "https://tc39.es/proposal-hashbang/out.html#sec-updated-syntax",
"support": {
"chrome": {
"version_added": "74"
},
"chrome_android": {
"version_added": "74"
},
"deno": {
"version_added": "1.0"
},
"edge": {
"version_added": "79"
},
"firefox": {
"version_added": "67"
},
"firefox_android": {
"version_added": "67"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "0.10.0"
},
"opera": {
"version_added": "62"
},
"opera_android": {
"version_added": "53"
},
"safari": {
"version_added": "13.1"
},
"safari_ios": {
"version_added": "13.4"
},
"samsunginternet_android": {
"version_added": "11.0"
},
"webview_android": {
"version_added": "74"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"hexadecimal_escape_sequences": {
"__compat": {
"description": "Hexadecimal escape sequences (<code>'\\xA9'</code>)",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Hexadecimal_escape_sequences",
"spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#prod-HexEscapeSequence",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": "18"
},
"deno": {
"version_added": "1.0"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "1"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "4"
},
"nodejs": {
"version_added": "0.10.0"
},
"opera": {
"version_added": "4"
},
"opera_android": {
"version_added": "10.1"
},
"safari": {
"version_added": "1"
},
"safari_ios": {
"version_added": "1"
},
"samsunginternet_android": {
"version_added": "1.0"
},
"webview_android": {
"version_added": "1"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"hexadecimal_numeric_literals": {
"__compat": {
"description": "Hexadecimal numeric literals (<code>0xAF</code>)",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Hexadecimal",
"spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#prod-HexIntegerLiteral",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": "18"
},
"deno": {
"version_added": "1.0"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "1"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "3"
},
"nodejs": {
"version_added": "0.10.0"
},
"opera": {
"version_added": "3"
},
"opera_android": {
"version_added": "10.1"
},
"safari": {
"version_added": "1"
},
"safari_ios": {
"version_added": "1"
},
"samsunginternet_android": {
"version_added": "1.0"
},
"webview_android": {
"version_added": "1"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"null_literal": {
"__compat": {
"description": "Null literal (<code>null</code>)",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Null_literal",
"spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#sec-null-literals",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": "18"
},
"deno": {
"version_added": "1.0"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "1"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "3"
},
"nodejs": {
"version_added": "0.10.0"
},
"opera": {
"version_added": "3"
},
"opera_android": {
"version_added": "10.1"
},
"safari": {
"version_added": "1"
},
"safari_ios": {
"version_added": "1"
},
"samsunginternet_android": {
"version_added": "1.0"
},
"webview_android": {
"version_added": "1"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"numeric_separators": {
"__compat": {
"description": "Numeric separators (<code>1_000_000_000_000</code>)",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Numeric_separators",
"spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#prod-NumericLiteralSeparator",
"support": {
"chrome": {
"version_added": "75"
},
"chrome_android": {
"version_added": "75"
},
"deno": {
"version_added": "1.2"
},
"edge": {
"version_added": "79"
},
"firefox": {
"version_added": "70"
},
"firefox_android": {
"version_added": "79"
},
"ie": {
"version_added": false
},
"nodejs": [
{
"version_added": "12.5.0"
},
{
"version_added": "10.4.0",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "62"
},
"opera_android": {
"version_added": false
},
"safari": {
"version_added": "13"
},
"safari_ios": {
"version_added": "13"
},
"samsunginternet_android": {
"version_added": "11.0"
},
"webview_android": {
"version_added": "75"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"octal_numeric_literals": {
"__compat": {
"description": "Octal numeric literals (<code>0o</code>)",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Octal",
"spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#prod-OctalIntegerLiteral",
"support": {
"chrome": {
"version_added": "41"
},
"chrome_android": {
"version_added": "41"
},
"deno": {
"version_added": "1.0"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "25"
},
"firefox_android": {
"version_added": "25"
},
"ie": {
"version_added": false
},
"nodejs": [
{
"version_added": "4.0.0"
},
{
"version_added": "0.12.0",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "28"
},
"opera_android": {
"version_added": "28"
},
"safari": {
"version_added": "9"
},
"safari_ios": {
"version_added": "9"
},
"samsunginternet_android": {
"version_added": "4.0"
},
"webview_android": {
"version_added": "41"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"regular_expression_literals": {
"__compat": {
"description": "Regular expression literals (<code>/ab+c/g</code>)",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Regular_expression_literals",
"spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#sec-literals-regular-expression-literals",
"support": {
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