{
"javascript": {
"functions": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions",
"spec_url": "https://tc39.es/ecma262/#sec-function-definitions",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": "18"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "1"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "3"
},
"nodejs": {
"version_added": true
},
"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
}
},
"arguments": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/arguments",
"spec_url": "https://tc39.es/ecma262/#sec-arguments-exotic-objects",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": "18"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "1"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "3"
},
"nodejs": {
"version_added": true
},
"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
}
},
"callee": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/arguments/callee",
"spec_url": "https://tc39.es/ecma262/#sec-arguments-exotic-objects",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": "18"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "1"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "6"
},
"nodejs": {
"version_added": true
},
"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
}
}
},
"length": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/arguments/length",
"spec_url": "https://tc39.es/ecma262/#sec-arguments-exotic-objects",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": "18"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "1"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "4"
},
"nodejs": {
"version_added": true
},
"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
}
}
},
"@@iterator": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/arguments/@@iterator",
"spec_url": [
"https://tc39.es/ecma262/#sec-createunmappedargumentsobject",
"https://tc39.es/ecma262/#sec-createmappedargumentsobject"
],
"support": {
"chrome": {
"version_added": "52"
},
"chrome_android": {
"version_added": "52"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "46"
},
"firefox_android": {
"version_added": "46"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": true
},
"opera": {
"version_added": "39"
},
"opera_android": {
"version_added": "41"
},
"safari": {
"version_added": "9"
},
"safari_ios": {
"version_added": "9"
},
"samsunginternet_android": {
"version_added": "6.0"
},
"webview_android": {
"version_added": "52"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
}
},
"arrow_functions": {
"__compat": {
"description": "Arrow functions",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/Arrow_functions",
"spec_url": "https://tc39.es/ecma262/#sec-arrow-function-definitions",
"support": {
"chrome": {
"version_added": "45"
},
"chrome_android": {
"version_added": "45"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "22",
"notes": [
"The initial implementation of arrow functions in Firefox made them automatically strict. This has been changed as of Firefox 24. The use of 'use strict';
is now required.",
"Prior to Firefox 39, a line terminator (\\n
) was incorrectly allowed after arrow function arguments. This has been fixed to conform to the ES2015 specification and code like () \\n => {}
will now throw a SyntaxError
in this and later versions."
]
},
"firefox_android": {
"version_added": "22",
"notes": [
"The initial implementation of arrow functions in Firefox made them automatically strict. This has been changed as of Firefox 24. The use of 'use strict';
is now required.",
"Prior to Firefox 39, a line terminator (\\n
) was incorrectly allowed after arrow function arguments. This has been fixed to conform to the ES2015 specification and code like () \\n => {}
will now throw a SyntaxError
in this and later versions."
]
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": true
},
"opera": {
"version_added": "32"
},
"opera_android": {
"version_added": "32"
},
"safari": {
"version_added": "10"
},
"safari_ios": {
"version_added": "10"
},
"samsunginternet_android": {
"version_added": "5.0"
},
"webview_android": {
"version_added": "45"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"trailing_comma": {
"__compat": {
"description": "Trailing comma in parameters",
"support": {
"chrome": {
"version_added": "58"
},
"chrome_android": {
"version_added": "58"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "52"
},
"firefox_android": {
"version_added": "52"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": true
},
"opera": {
"version_added": "45"
},
"opera_android": {
"version_added": "43"
},
"safari": {
"version_added": "10"
},
"safari_ios": {
"version_added": "10"
},
"samsunginternet_android": {
"version_added": "7.0"
},
"webview_android": {
"version_added": "58"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
}
},
"block_level_functions": {
"__compat": {
"description": "Block-level functions",
"support": {
"chrome": {
"version_added": "49"
},
"chrome_android": {
"version_added": "49"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "46"
},
"firefox_android": {
"version_added": "46"
},
"ie": {
"version_added": "11"
},
"nodejs": {
"version_added": null
},
"opera": {
"version_added": "36"
},
"opera_android": {
"version_added": "36"
},
"safari": {
"version_added": "10"
},
"safari_ios": {
"version_added": "10"
},
"samsunginternet_android": {
"version_added": "5.0"
},
"webview_android": {
"version_added": "49"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"default_parameters": {
"__compat": {
"description": "Default parameters",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/Default_parameters",
"spec_url": "https://tc39.es/ecma262/#sec-function-definitions",
"support": {
"chrome": {
"version_added": "49"
},
"chrome_android": {
"version_added": "49"
},
"edge": {
"version_added": "14"
},
"firefox": {
"version_added": "15"
},
"firefox_android": {
"version_added": "15"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "6.0.0"
},
"opera": {
"version_added": "36"
},
"opera_android": {
"version_added": "36"
},
"safari": {
"version_added": "10"
},
"safari_ios": {
"version_added": "10"
},
"samsunginternet_android": {
"version_added": "5.0"
},
"webview_android": {
"version_added": "49"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"destructured_parameter_with_default_value_assignment": {
"__compat": {
"description": "Destructured parameter with default value assignment",
"support": {
"chrome": {
"version_added": "49"
},
"chrome_android": {
"version_added": "49"
},
"edge": {
"version_added": "14"
},
"firefox": {
"version_added": "41"
},
"firefox_android": {
"version_added": "41"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": true
},
"opera": {
"version_added": "36"
},
"opera_android": {
"version_added": "36"
},
"safari": {
"version_added": "10"
},
"safari_ios": {
"version_added": "10"
},
"samsunginternet_android": {
"version_added": "5.0"
},
"webview_android": {
"version_added": "49"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"parameters_without_defaults_after_default_parameters": {
"__compat": {
"description": "Parameters without defaults after default parameters",
"support": {
"chrome": {
"version_added": "49"
},
"chrome_android": {
"version_added": "49"
},
"edge": {
"version_added": "14"
},
"firefox": {
"version_added": "26"
},
"firefox_android": {
"version_added": "26"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": true
},
"opera": {
"version_added": "36"
},
"opera_android": {
"version_added": "36"
},
"safari": {
"version_added": "10"
},
"safari_ios": {
"version_added": "10"
},
"samsunginternet_android": {
"version_added": "5.0"
},
"webview_android": {
"version_added": "49"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
}
},
"get": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/get",
"spec_url": "https://tc39.es/ecma262/#sec-method-definitions",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": "18"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "1.5"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "9"
},
"nodejs": {
"version_added": true
},
"opera": {
"version_added": "9.5"
},
"opera_android": {
"version_added": "14"
},
"safari": {
"version_added": "3"
},
"safari_ios": {
"version_added": "1"
},
"samsunginternet_android": {
"version_added": "1.0"
},
"webview_android": {
"version_added": "1"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"computed_property_names": {
"__compat": {
"description": "Computed property names",
"support": {
"chrome": {
"version_added": "46"
},
"chrome_android": {
"version_added": "46"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "34"
},
"firefox_android": {
"version_added": "34"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": true
},
"opera": {
"version_added": "47"
},
"opera_android": {
"version_added": "33"
},
"safari": {
"version_added": false
},
"safari_ios": {
"version_added": false
},
"samsunginternet_android": {
"version_added": "5.0"
},
"webview_android": {
"version_added": "46"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
}
},
"method_definitions": {
"__compat": {
"description": "Method definitions",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/Method_definitions",
"spec_url": "https://tc39.es/ecma262/#sec-method-definitions",
"support": {
"chrome": {
"version_added": "39"
},
"chrome_android": {
"version_added": "39"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "34"
},
"firefox_android": {
"version_added": "34"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": true
},
"opera": {
"version_added": "26"
},
"opera_android": {
"version_added": "26"
},
"safari": {
"version_added": "9"
},
"safari_ios": {
"version_added": "9"
},
"samsunginternet_android": {
"version_added": "4.0"
},
"webview_android": {
"version_added": "39"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"async_generator_methods": {
"__compat": {
"description": "Async generator methods",
"support": {
"chrome": {
"version_added": "63"
},
"chrome_android": {
"version_added": "63"
},
"edge": {
"version_added": "79"
},
"firefox": {
"version_added": "55"
},
"firefox_android": {
"version_added": "55"
},
"ie": {
"version_added": false
},
"nodejs": [
{
"version_added": "10.0.0"
},
{
"version_added": "8.10.0",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "50"
},
"opera_android": {
"version_added": "46"
},
"safari": {
"version_added": "12"
},
"safari_ios": {
"version_added": "12"
},
"samsunginternet_android": {
"version_added": "8.0"
},
"webview_android": {
"version_added": "63"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"async_methods": {
"__compat": {
"description": "Async methods",
"support": {
"chrome": {
"version_added": "55"
},
"chrome_android": {
"version_added": "55"
},
"edge": {
"version_added": "15"
},
"firefox": {
"version_added": "52"
},
"firefox_android": {
"version_added": "52"
},
"ie": {
"version_added": false
},
"nodejs": [
{
"version_added": "7.6.0"
},
{
"version_added": "7.0.0",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "42"
},
"opera_android": {
"version_added": "42"
},
"safari": {
"version_added": "10.1"
},
"safari_ios": {
"version_added": "10.3"
},
"samsunginternet_android": {
"version_added": "6.0"
},
"webview_android": {
"version_added": "55"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"generator_methods_not_constructable": {
"__compat": {
"description": "Generator methods are not constructable (ES2016)",
"support": {
"chrome": {
"version_added": "42"
},
"chrome_android": {
"version_added": "42"
},
"edge": {
"version_added": "13"
},
"firefox": {
"version_added": "43"
},
"firefox_android": {
"version_added": "43"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "6.0.0"
},
"opera": {
"version_added": "29"
},
"opera_android": {
"version_added": "29"
},
"safari": {
"version_added": false
},
"safari_ios": {
"version_added": false
},
"samsunginternet_android": {
"version_added": "4.0"
},
"webview_android": {
"version_added": "42"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
}
},
"rest_parameters": {
"__compat": {
"description": "Rest parameters",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/rest_parameters",
"spec_url": "https://tc39.es/ecma262/#sec-function-definitions",
"support": {
"chrome": {
"version_added": "47"
},
"chrome_android": {
"version_added": "47"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "15"
},
"firefox_android": {
"version_added": "15"
},
"ie": {
"version_added": false
},
"nodejs": [
{
"version_added": "6.0.0"
},
{
"version_added": "4.0.0",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "34"
},
"opera_android": {
"version_added": "34"
},
"safari": {
"version_added": "10"
},
"safari_ios": {
"version_added": "10"
},
"samsunginternet_android": {
"version_added": "5.0"
},
"webview_android": {
"version_added": "47"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"destructuring": {
"__compat": {
"description": "Destructuring rest parameters",
"support": {
"chrome": {
"version_added": "49"
},
"chrome_android": {
"version_added": "49"
},
"edge": {
"version_added": "79"
},
"firefox": {
"version_added": "52"
},
"firefox_android": {
"version_added": "52"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": true
},
"opera": {
"version_added": "36"
},
"opera_android": {
"version_added": "36"
},
"safari": {
"version_added": "10"
},
"safari_ios": {
"version_added": "10"
},
"samsunginternet_android": {
"version_added": "5.0"
},
"webview_android": {
"version_added": "49"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
}
},
"set": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/set",
"spec_url": "https://tc39.es/ecma262/#sec-method-definitions",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": "18"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "1.5"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "9"
},
"nodejs": {
"version_added": true
},
"opera": {
"version_added": "9.5"
},
"opera_android": {
"version_added": "14"
},
"safari": {
"version_added": "3"
},
"safari_ios": {
"version_added": "1"
},
"samsunginternet_android": {
"version_added": "1.0"
},
"webview_android": {
"version_added": "1"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"computed_property_names": {
"__compat": {
"description": "Computed property names",
"support": {
"chrome": {
"version_added": "46"
},
"chrome_android": {
"version_added": "46"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "34"
},
"firefox_android": {
"version_added": "34"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": true
},
"opera": {
"version_added": "47"
},
"opera_android": {
"version_added": "33"
},
"safari": {
"version_added": false
},
"safari_ios": {
"version_added": false
},
"samsunginternet_android": {
"version_added": "5.0"
},
"webview_android": {
"version_added": "46"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
}
}
}
}
}