{
"javascript": {
"builtins": {
"Map": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map",
"spec_url": "https://tc39.es/ecma262/#sec-map-objects",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "13"
},
"firefox_android": {
"version_added": "14"
},
"ie": {
"version_added": "11"
},
"nodejs": [
{
"version_added": "0.12"
},
{
"version_added": "0.10",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "8"
},
"safari_ios": {
"version_added": "8"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"Map": {
"__compat": {
"description": "Map()
constructor",
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/Map",
"spec_url": "https://tc39.es/ecma262/#sec-map-constructor",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "13"
},
"firefox_android": {
"version_added": "14"
},
"ie": {
"version_added": "11"
},
"nodejs": [
{
"version_added": "0.12"
},
{
"version_added": "0.10",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "8"
},
"safari_ios": {
"version_added": "8"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"iterable_allowed": {
"__compat": {
"description": "new Map(iterable)
",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "13"
},
"firefox_android": {
"version_added": "14"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "0.12"
},
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "9"
},
"safari_ios": {
"version_added": "9"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"new_required": {
"__compat": {
"description": "Map()
without new
throws",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "42"
},
"firefox_android": {
"version_added": "42"
},
"ie": {
"version_added": "11"
},
"nodejs": {
"version_added": "0.12"
},
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "9"
},
"safari_ios": {
"version_added": "9"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"null_allowed": {
"__compat": {
"description": "new Map(null)
",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "37"
},
"firefox_android": {
"version_added": "37"
},
"ie": {
"version_added": "11"
},
"nodejs": [
{
"version_added": "0.12"
},
{
"version_added": "0.10",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "9"
},
"safari_ios": {
"version_added": "9"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
}
},
"clear": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/clear",
"spec_url": "https://tc39.es/ecma262/#sec-map.prototype.clear",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "19"
},
"firefox_android": {
"version_added": "19"
},
"ie": {
"version_added": "11"
},
"nodejs": {
"version_added": "0.12"
},
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "8"
},
"safari_ios": {
"version_added": "8"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"delete": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/delete",
"spec_url": "https://tc39.es/ecma262/#sec-map.prototype.delete",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "13"
},
"firefox_android": {
"version_added": "14"
},
"ie": {
"version_added": "11"
},
"nodejs": [
{
"version_added": "0.12"
},
{
"version_added": "0.10",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "8"
},
"safari_ios": {
"version_added": "8"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"entries": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/entries",
"spec_url": "https://tc39.es/ecma262/#sec-map.prototype.entries",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "20"
},
"firefox_android": {
"version_added": "20"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "0.12"
},
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "8"
},
"safari_ios": {
"version_added": "8"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"forEach": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/forEach",
"spec_url": "https://tc39.es/ecma262/#sec-map.prototype.foreach",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "25"
},
"firefox_android": {
"version_added": "25"
},
"ie": {
"version_added": "11"
},
"nodejs": {
"version_added": "0.12"
},
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "8"
},
"safari_ios": {
"version_added": "8"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"get": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/get",
"spec_url": "https://tc39.es/ecma262/#sec-map.prototype.get",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "13"
},
"firefox_android": {
"version_added": "14"
},
"ie": {
"version_added": "11"
},
"nodejs": [
{
"version_added": "0.12"
},
{
"version_added": "0.10",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "8"
},
"safari_ios": {
"version_added": "8"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"has": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/has",
"spec_url": "https://tc39.es/ecma262/#sec-map.prototype.has",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "13"
},
"firefox_android": {
"version_added": "14"
},
"ie": {
"version_added": "11"
},
"nodejs": [
{
"version_added": "0.12"
},
{
"version_added": "0.10",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "8"
},
"safari_ios": {
"version_added": "8"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"key_equality_for_zeros": {
"__compat": {
"description": "Key equality for -0 and 0",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "29"
},
"firefox_android": {
"version_added": "29"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "4.0.0"
},
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "9"
},
"safari_ios": {
"version_added": "9"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"keys": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/keys",
"spec_url": "https://tc39.es/ecma262/#sec-map.prototype.keys",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "20"
},
"firefox_android": {
"version_added": "20"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "0.12"
},
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "8"
},
"safari_ios": {
"version_added": "8"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"set": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/set",
"spec_url": "https://tc39.es/ecma262/#sec-map.prototype.set",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "13"
},
"firefox_android": {
"version_added": "14"
},
"ie": {
"version_added": "11",
"partial_implementation": true,
"notes": "Returns 'undefined' instead of the 'Map' object."
},
"nodejs": [
{
"version_added": "0.12"
},
{
"version_added": "0.10",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "8"
},
"safari_ios": {
"version_added": "8"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"size": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/size",
"spec_url": "https://tc39.es/ecma262/#sec-get-map.prototype.size",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "19",
"notes": "From Firefox 13 to Firefox 18, the size
property was implemented as a Map.prototype.size()
method, this has been changed to a property in later versions conform to the ECMAScript 2015 specification."
},
"firefox_android": {
"version_added": "19",
"notes": "From Firefox 13 to Firefox 18, the size
property was implemented as a Map.prototype.size()
method, this has been changed to a property in later versions conform to the ECMAScript 2015 specification."
},
"ie": {
"version_added": "11"
},
"nodejs": {
"version_added": "0.12"
},
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "8"
},
"safari_ios": {
"version_added": "8"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"values": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/values",
"spec_url": "https://tc39.es/ecma262/#sec-map.prototype.values",
"support": {
"chrome": {
"version_added": "38"
},
"chrome_android": {
"version_added": "38"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "20"
},
"firefox_android": {
"version_added": "20"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "0.12"
},
"opera": {
"version_added": "25"
},
"opera_android": {
"version_added": "25"
},
"safari": {
"version_added": "8"
},
"safari_ios": {
"version_added": "8"
},
"samsunginternet_android": {
"version_added": "3.0"
},
"webview_android": {
"version_added": "38"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"@@iterator": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/@@iterator",
"spec_url": "https://tc39.es/ecma262/#sec-map.prototype-@@iterator",
"support": {
"chrome": {
"version_added": "43"
},
"chrome_android": {
"version_added": "43"
},
"edge": {
"version_added": "12"
},
"firefox": [
{
"version_added": "36"
},
{
"alternative_name": "@@iterator",
"version_added": "27",
"version_removed": "36",
"notes": "A placeholder property named @@iterator
is used."
},
{
"alternative_name": "iterator",
"version_added": "17",
"version_removed": "27",
"notes": "A placeholder property named iterator
is used."
}
],
"firefox_android": [
{
"version_added": "36"
},
{
"alternative_name": "@@iterator",
"version_added": "27",
"version_removed": "36",
"notes": "A placeholder property named @@iterator
is used."
},
{
"alternative_name": "iterator",
"version_added": "17",
"version_removed": "27",
"notes": "A placeholder property named iterator
is used."
}
],
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "0.12"
},
"opera": {
"version_added": "30"
},
"opera_android": {
"version_added": "30"
},
"safari": {
"version_added": "10"
},
"safari_ios": {
"version_added": "10"
},
"samsunginternet_android": {
"version_added": "4.0"
},
"webview_android": {
"version_added": "43"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"@@species": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/@@species",
"spec_url": "https://tc39.es/ecma262/#sec-get-map-@@species",
"support": {
"chrome": {
"version_added": "51"
},
"chrome_android": {
"version_added": "51"
},
"edge": {
"version_added": "13"
},
"firefox": {
"version_added": "41"
},
"firefox_android": {
"version_added": "41"
},
"ie": {
"version_added": false
},
"nodejs": [
{
"version_added": "6.5.0"
},
{
"version_added": "6.0.0",
"flags": [
{
"type": "runtime_flag",
"name": "--harmony"
}
]
}
],
"opera": {
"version_added": "38"
},
"opera_android": {
"version_added": "41"
},
"safari": {
"version_added": "10"
},
"safari_ios": {
"version_added": "10"
},
"samsunginternet_android": {
"version_added": "5.0"
},
"webview_android": {
"version_added": "51"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"@@toStringTag": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/@@toStringTag",
"spec_url": "https://tc39.es/ecma262/#sec-map.prototype-@@tostringtag",
"support": {
"chrome": {
"version_added": "44"
},
"chrome_android": {
"version_added": "44"
},
"edge": {
"version_added": "79"
},
"firefox": {
"version_added": "51"
},
"firefox_android": {
"version_added": "51"
},
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "6.0.0"
},
"opera": {
"version_added": false
},
"opera_android": {
"version_added": false
},
"safari": {
"version_added": false
},
"safari_ios": {
"version_added": false
},
"samsunginternet_android": {
"version_added": "4.0"
},
"webview_android": {
"version_added": "44"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
}
}
}
}
}