[
  {
    "name": "MemberExpressionLiterals",
    "es": "ES5",
    "babel": "transform-member-expression-literals",
    "features": [
      "Object/array literal extensions / Reserved words as property names"
    ],
    "targets": {
      "chrome": "7",
      "opera": "12",
      "edge": "12",
      "firefox": "2",
      "safari": "5.1",
      "node": "0.4",
      "deno": "1",
      "ie": "9",
      "android": "4",
      "ios": "6",
      "samsung": "1",
      "rhino": "1.7.13",
      "opera_mobile": "12",
      "electron": "0.20"
    }
  },
  {
    "name": "PropertyLiterals",
    "es": "ES5",
    "babel": "transform-property-literals",
    "features": [
      "Object/array literal extensions / Reserved words as property names"
    ],
    "targets": {
      "chrome": "7",
      "opera": "12",
      "edge": "12",
      "firefox": "2",
      "safari": "5.1",
      "node": "0.4",
      "deno": "1",
      "ie": "9",
      "android": "4",
      "ios": "6",
      "samsung": "1",
      "rhino": "1.7.13",
      "opera_mobile": "12",
      "electron": "0.20"
    }
  },
  {
    "name": "ReservedWords",
    "es": "ES5",
    "babel": "transform-reserved-words",
    "features": [
      "Miscellaneous / Unreserved words"
    ],
    "targets": {
      "chrome": "13",
      "opera": "10.50",
      "edge": "12",
      "firefox": "2",
      "safari": "3.1",
      "node": "0.6",
      "deno": "1",
      "ie": "9",
      "android": "4.4",
      "ios": "6",
      "samsung": "1",
      "rhino": "1.7.13",
      "opera_mobile": "10.1",
      "electron": "0.20"
    }
  },
  {
    "name": "Parameters",
    "babel": "transform-parameters",
    "features": [
      "default function parameters",
      "rest parameters",
      "destructuring, parameters / aliased defaults, arrow function",
      "destructuring, parameters / shorthand defaults, arrow function",
      "destructuring, parameters / duplicate identifier"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "49",
      "opera": "36",
      "edge": "18",
      "firefox": "53",
      "safari": "16.3",
      "node": "6",
      "deno": "1",
      "ios": "16.3",
      "samsung": "5",
      "opera_mobile": "36",
      "electron": "0.37"
    }
  },
  {
    "name": "TemplateLiterals",
    "babel": "transform-template-literals",
    "features": [
      "template literals"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "41",
      "opera": "28",
      "edge": "13",
      "firefox": "34",
      "safari": "13",
      "node": "4",
      "deno": "1",
      "ios": "13",
      "samsung": "3.4",
      "opera_mobile": "28",
      "electron": "0.21"
    }
  },
  {
    "name": "Literals",
    "babel": "transform-literals",
    "features": [
      "Unicode code point escapes"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "44",
      "opera": "31",
      "edge": "12",
      "firefox": "53",
      "safari": "9",
      "node": "4",
      "deno": "1",
      "ios": "9",
      "samsung": "4",
      "rhino": "1.7.15",
      "opera_mobile": "32",
      "electron": "0.30"
    }
  },
  {
    "name": "FunctionName",
    "babel": "transform-function-name",
    "features": [
      "function \"name\" property"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "51",
      "opera": "38",
      "edge": "79",
      "firefox": "53",
      "safari": "10",
      "node": "6.5",
      "deno": "1",
      "ios": "10",
      "samsung": "5",
      "opera_mobile": "41",
      "electron": "1.2"
    }
  },
  {
    "name": "ArrowFunctions",
    "babel": "transform-arrow-functions",
    "features": [
      "arrow functions / 0 parameters",
      "arrow functions / 1 parameter, no brackets",
      "arrow functions / multiple parameters",
      "arrow functions / lexical \"this\" binding",
      "arrow functions / \"this\" unchanged by call or apply",
      "arrow functions / can't be bound, can be curried",
      "arrow functions / lexical \"arguments\" binding",
      "arrow functions / no line break between params and <code>=></code>",
      "arrow functions / correct precedence",
      "arrow functions / no \"prototype\" property"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "47",
      "opera": "34",
      "edge": "13",
      "firefox": "43",
      "safari": "10",
      "node": "6",
      "deno": "1",
      "ios": "10",
      "samsung": "5",
      "rhino": "1.7.13",
      "opera_mobile": "34",
      "electron": "0.36"
    }
  },
  {
    "name": "BlockScopedFunctions",
    "babel": "transform-block-scoped-functions",
    "features": [
      "block-level function declaration"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "41",
      "opera": "28",
      "edge": "12",
      "firefox": "46",
      "safari": "10",
      "node": "4",
      "deno": "1",
      "ie": "11",
      "ios": "10",
      "samsung": "3.4",
      "opera_mobile": "28",
      "electron": "0.21"
    }
  },
  {
    "name": "Classes",
    "babel": "transform-classes",
    "features": [
      "class",
      "super",
      "arrow functions / lexical \"super\" binding in constructors",
      "arrow functions / lexical \"super\" binding in methods"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "46",
      "opera": "33",
      "edge": "13",
      "firefox": "45",
      "safari": "10",
      "node": "5",
      "deno": "1",
      "ios": "10",
      "samsung": "5",
      "opera_mobile": "33",
      "electron": "0.36"
    }
  },
  {
    "name": "ObjectSuper",
    "babel": "transform-object-super",
    "features": [
      "super"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "46",
      "opera": "33",
      "edge": "13",
      "firefox": "45",
      "safari": "10",
      "node": "5",
      "deno": "1",
      "ios": "10",
      "samsung": "5",
      "opera_mobile": "33",
      "electron": "0.36"
    }
  },
  {
    "name": "ShorthandProperties",
    "babel": "transform-shorthand-properties",
    "features": [
      "object literal extensions / shorthand properties"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "43",
      "opera": "30",
      "edge": "12",
      "firefox": "33",
      "safari": "9",
      "node": "4",
      "deno": "1",
      "ios": "9",
      "samsung": "4",
      "rhino": "1.7.14",
      "opera_mobile": "30",
      "electron": "0.27"
    }
  },
  {
    "name": "DuplicateKeys",
    "babel": "transform-duplicate-keys",
    "features": [
      "miscellaneous / duplicate property names in strict mode"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "42",
      "opera": "29",
      "edge": "12",
      "firefox": "34",
      "safari": "9",
      "node": "4",
      "deno": "1",
      "ios": "9",
      "samsung": "3.4",
      "opera_mobile": "29",
      "electron": "0.25"
    }
  },
  {
    "name": "ComputedProperties",
    "babel": "transform-computed-properties",
    "features": [
      "object literal extensions / computed properties"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "44",
      "opera": "31",
      "edge": "12",
      "firefox": "34",
      "safari": "7.1",
      "node": "4",
      "deno": "1",
      "ios": "8",
      "samsung": "4",
      "opera_mobile": "32",
      "electron": "0.30"
    }
  },
  {
    "name": "ForOf",
    "babel": "transform-for-of",
    "features": [
      "for..of loops"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "51",
      "opera": "38",
      "edge": "15",
      "firefox": "53",
      "safari": "10",
      "node": "6.5",
      "deno": "1",
      "ios": "10",
      "samsung": "5",
      "opera_mobile": "41",
      "electron": "1.2"
    }
  },
  {
    "name": "StickyRegex",
    "babel": "transform-sticky-regex",
    "features": [
      "RegExp \"y\" and \"u\" flags / \"y\" flag, lastIndex",
      "RegExp \"y\" and \"u\" flags / \"y\" flag"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "49",
      "opera": "36",
      "edge": "13",
      "firefox": "3",
      "safari": "10",
      "node": "6",
      "deno": "1",
      "ios": "10",
      "samsung": "5",
      "rhino": "1.7.15",
      "opera_mobile": "36",
      "electron": "0.37"
    }
  },
  {
    "name": "UnicodeEscapes",
    "babel": "transform-unicode-escapes",
    "features": [
      "Unicode code point escapes"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "44",
      "opera": "31",
      "edge": "12",
      "firefox": "53",
      "safari": "9",
      "node": "4",
      "deno": "1",
      "ios": "9",
      "samsung": "4",
      "rhino": "1.7.15",
      "opera_mobile": "32",
      "electron": "0.30"
    }
  },
  {
    "name": "UnicodeRegex",
    "babel": "transform-unicode-regex",
    "features": [
      "RegExp \"y\" and \"u\" flags / \"u\" flag, case folding",
      "RegExp \"y\" and \"u\" flags / \"u\" flag, Unicode code point escapes",
      "RegExp \"y\" and \"u\" flags / \"u\" flag, non-BMP Unicode characters",
      "RegExp \"y\" and \"u\" flags / \"u\" flag"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "50",
      "opera": "37",
      "edge": "13",
      "firefox": "46",
      "safari": "12",
      "node": "6",
      "deno": "1",
      "ios": "12",
      "samsung": "5",
      "opera_mobile": "37",
      "electron": "1.1"
    }
  },
  {
    "name": "Spread",
    "babel": "transform-spread",
    "features": [
      "spread syntax for iterable objects",
      "class",
      "super"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "46",
      "opera": "33",
      "edge": "13",
      "firefox": "45",
      "safari": "10",
      "node": "5",
      "deno": "1",
      "ios": "10",
      "samsung": "5",
      "opera_mobile": "33",
      "electron": "0.36"
    }
  },
  {
    "name": "Destructuring",
    "babel": "transform-destructuring",
    "features": [
      "destructuring, assignment",
      "destructuring, declarations"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "51",
      "opera": "38",
      "edge": "15",
      "firefox": "53",
      "safari": "10",
      "node": "6.5",
      "deno": "1",
      "ios": "10",
      "samsung": "5",
      "opera_mobile": "41",
      "electron": "1.2"
    }
  },
  {
    "name": "BlockScoping",
    "babel": "transform-block-scoping",
    "features": [
      "const",
      "let",
      "generators"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "50",
      "opera": "37",
      "edge": "14",
      "firefox": "53",
      "safari": "11",
      "node": "6",
      "deno": "1",
      "ios": "11",
      "samsung": "5",
      "opera_mobile": "37",
      "electron": "1.1"
    }
  },
  {
    "name": "TypeofSymbol",
    "babel": "transform-typeof-symbol",
    "features": [
      "Symbol / typeof support"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "38",
      "opera": "25",
      "edge": "12",
      "firefox": "36",
      "safari": "9",
      "node": "0.12",
      "deno": "1",
      "ios": "9",
      "samsung": "3",
      "rhino": "1.7.13",
      "opera_mobile": "25",
      "electron": "0.20"
    }
  },
  {
    "name": "NewTarget",
    "babel": "transform-new-target",
    "features": [
      "new.target",
      "arrow functions / lexical \"new.target\" binding"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "46",
      "opera": "33",
      "edge": "14",
      "firefox": "41",
      "safari": "10",
      "node": "5",
      "deno": "1",
      "ios": "10",
      "samsung": "5",
      "opera_mobile": "33",
      "electron": "0.36"
    }
  },
  {
    "name": "Regenerator",
    "babel": "transform-regenerator",
    "features": [
      "generators"
    ],
    "es": "ES2015",
    "targets": {
      "chrome": "50",
      "opera": "37",
      "edge": "13",
      "firefox": "53",
      "safari": "10",
      "node": "6",
      "deno": "1",
      "ios": "10",
      "samsung": "5",
      "opera_mobile": "37",
      "electron": "1.1"
    }
  },
  {
    "name": "ExponentiationOperator",
    "babel": "transform-exponentiation-operator",
    "features": [
      "exponentiation (**) operator"
    ],
    "es": "ES2016",
    "targets": {
      "chrome": "52",
      "opera": "39",
      "edge": "14",
      "firefox": "52",
      "safari": "10.1",
      "node": "7",
      "deno": "1",
      "ios": "10.3",
      "samsung": "6",
      "rhino": "1.7.14",
      "opera_mobile": "41",
      "electron": "1.3"
    }
  },
  {
    "name": "AsyncToGenerator",
    "babel": "transform-async-to-generator",
    "features": [
      "async functions"
    ],
    "es": "ES2017",
    "targets": {
      "chrome": "55",
      "opera": "42",
      "edge": "15",
      "firefox": "52",
      "safari": "11",
      "node": "7.6",
      "deno": "1",
      "ios": "11",
      "samsung": "6",
      "opera_mobile": "42",
      "electron": "1.6"
    }
  },
  {
    "name": "AsyncGeneratorFunctions",
    "babel": "transform-async-generator-functions",
    "features": [
      "Asynchronous Iterators"
    ],
    "es": "ES2018",
    "targets": {
      "chrome": "63",
      "opera": "50",
      "edge": "79",
      "firefox": "57",
      "safari": "12",
      "node": "10",
      "deno": "1",
      "ios": "12",
      "samsung": "8",
      "opera_mobile": "46",
      "electron": "3.0"
    }
  },
  {
    "name": "ObjectRestSpread",
    "babel": "transform-object-rest-spread",
    "features": [
      "object rest/spread properties"
    ],
    "es": "ES2018",
    "targets": {
      "chrome": "60",
      "opera": "47",
      "edge": "79",
      "firefox": "55",
      "safari": "11.1",
      "node": "8.3",
      "deno": "1",
      "ios": "11.3",
      "samsung": "8",
      "opera_mobile": "44",
      "electron": "2.0"
    }
  },
  {
    "name": "DotallRegex",
    "babel": "transform-dotall-regex",
    "features": [
      "s (dotAll) flag for regular expressions"
    ],
    "es": "ES2018",
    "targets": {
      "chrome": "62",
      "opera": "49",
      "edge": "79",
      "firefox": "78",
      "safari": "11.1",
      "node": "8.10",
      "deno": "1",
      "ios": "11.3",
      "samsung": "8",
      "rhino": "1.7.15",
      "opera_mobile": "46",
      "electron": "3.0"
    }
  },
  {
    "name": "UnicodePropertyRegex",
    "babel": "transform-unicode-property-regex",
    "features": [
      "RegExp Unicode Property Escapes / basic"
    ],
    "es": "ES2018",
    "targets": {
      "chrome": "64",
      "opera": "51",
      "edge": "79",
      "firefox": "78",
      "safari": "11.1",
      "node": "10",
      "deno": "1",
      "ios": "11.3",
      "samsung": "9",
      "opera_mobile": "47",
      "electron": "3.0"
    }
  },
  {
    "name": "NamedCapturingGroupsRegex",
    "babel": "transform-named-capturing-groups-regex",
    "features": [
      "RegExp named capture groups"
    ],
    "es": "ES2018",
    "targets": {
      "chrome": "64",
      "opera": "51",
      "edge": "79",
      "firefox": "78",
      "safari": "11.1",
      "node": "10",
      "deno": "1",
      "ios": "11.3",
      "samsung": "9",
      "opera_mobile": "47",
      "electron": "3.0"
    }
  },
  {
    "name": "LookbehindRegex",
    "babel": null,
    "features": [
      "RegExp Lookbehind Assertions"
    ],
    "es": "ES2018",
    "targets": {
      "chrome": "62",
      "opera": "49",
      "edge": "79",
      "firefox": "78",
      "safari": "16.4",
      "node": "8.10",
      "deno": "1",
      "ios": "16.4",
      "samsung": "8",
      "opera_mobile": "46",
      "electron": "3.0"
    }
  },
  {
    "name": "JsonStrings",
    "babel": "transform-json-strings",
    "features": [
      "JSON superset"
    ],
    "es": "ES2019",
    "targets": {
      "chrome": "66",
      "opera": "53",
      "edge": "79",
      "firefox": "62",
      "safari": "12",
      "node": "10",
      "deno": "1",
      "ios": "12",
      "samsung": "9",
      "rhino": "1.7.14",
      "opera_mobile": "47",
      "electron": "3.0"
    }
  },
  {
    "name": "OptionalCatchBinding",
    "babel": "transform-optional-catch-binding",
    "features": [
      "optional catch binding"
    ],
    "es": "ES2019",
    "targets": {
      "chrome": "66",
      "opera": "53",
      "edge": "79",
      "firefox": "58",
      "safari": "11.1",
      "node": "10",
      "deno": "1",
      "ios": "11.3",
      "samsung": "9",
      "opera_mobile": "47",
      "electron": "3.0"
    }
  },
  {
    "name": "NullishCoalescingOperator",
    "babel": "transform-nullish-coalescing-operator",
    "features": [
      "nullish coalescing operator (??)"
    ],
    "es": "ES2020",
    "targets": {
      "chrome": "80",
      "opera": "67",
      "edge": "80",
      "firefox": "72",
      "safari": "13.1",
      "node": "14",
      "deno": "1",
      "ios": "13.4",
      "samsung": "13",
      "opera_mobile": "57",
      "electron": "8.0"
    }
  },
  {
    "name": "OptionalChaining",
    "babel": "transform-optional-chaining",
    "features": [
      "optional chaining operator (?.)"
    ],
    "es": "ES2020",
    "targets": {
      "chrome": "91",
      "opera": "77",
      "edge": "91",
      "firefox": "74",
      "safari": "13.1",
      "node": "16.9",
      "deno": "1.9",
      "ios": "13.4",
      "samsung": "16",
      "opera_mobile": "64",
      "electron": "13.0"
    }
  },
  {
    "name": "BigInt",
    "babel": null,
    "features": [
      "BigInt / basic functionality"
    ],
    "es": "ES2020",
    "targets": {
      "chrome": "67",
      "opera": "54",
      "edge": "79",
      "firefox": "68",
      "safari": "14",
      "node": "10.4",
      "deno": "1",
      "ios": "14",
      "samsung": "9",
      "rhino": "1.7.14",
      "opera_mobile": "48",
      "electron": "4.0"
    }
  },
  {
    "name": "NumericSeparator",
    "babel": "transform-numeric-separator",
    "features": [
      "numeric separators"
    ],
    "es": "ES2021",
    "targets": {
      "chrome": "75",
      "opera": "62",
      "edge": "79",
      "firefox": "70",
      "safari": "13",
      "node": "12.5",
      "deno": "1",
      "ios": "13",
      "samsung": "11",
      "rhino": "1.7.14",
      "opera_mobile": "54",
      "electron": "6.0"
    }
  },
  {
    "name": "LogicalAssignmentOperators",
    "babel": "transform-logical-assignment-operators",
    "features": [
      "Logical Assignment"
    ],
    "es": "ES2021",
    "targets": {
      "chrome": "85",
      "opera": "71",
      "edge": "85",
      "firefox": "79",
      "safari": "14",
      "node": "15",
      "deno": "1.2",
      "ios": "14",
      "samsung": "14",
      "opera_mobile": "60",
      "electron": "10.0"
    }
  },
  {
    "name": "ClassStaticBlock",
    "babel": "transform-class-static-block",
    "features": [
      "Class static initialization blocks"
    ],
    "es": "ES2022",
    "targets": {
      "chrome": "94",
      "opera": "80",
      "edge": "94",
      "firefox": "93",
      "safari": "16.4",
      "node": "16.11",
      "deno": "1.14",
      "ios": "16.4",
      "samsung": "17",
      "opera_mobile": "66",
      "electron": "15.0"
    }
  },
  {
    "name": "PrivatePropertyInObject",
    "babel": "transform-private-property-in-object",
    "features": [
      "Ergonomic brand checks for private fields"
    ],
    "es": "ES2022",
    "targets": {
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      "samsung": "16",
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      "electron": "13.0"
    }
  },
  {
    "name": "ClassProperties",
    "babel": "transform-class-properties",
    "features": [
      "static class fields",
      "instance class fields / public instance class fields",
      "instance class fields / private instance class fields basic support",
      "instance class fields / computed instance class fields",
      "instance class fields / resolving identifier in parent scope"
    ],
    "es": "ES2022",
    "targets": {
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      "ios": "16",
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      "opera_mobile": "53",
      "electron": "17.0"
    }
  },
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    "name": "PrivateMethods",
    "babel": "transform-private-methods",
    "features": [
      "private class methods"
    ],
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    "targets": {
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      "samsung": "14",
      "opera_mobile": "60",
      "electron": "10.0"
    }
  },
  {
    "name": "MatchIndicesRegex",
    "babel": null,
    "features": [
      "RegExp Match Indices (`hasIndices` / `d` flag) / constructor supports it"
    ],
    "es": "ES2022",
    "targets": {
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      "opera": "76",
      "edge": "90",
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      "samsung": "15",
      "opera_mobile": "64",
      "electron": "13.0"
    }
  },
  {
    "name": "UnicodeSetsRegex",
    "babel": "transform-unicode-sets-regex",
    "features": [
      "RegExp `v` flag / set notations",
      "RegExp `v` flag / properties of Strings",
      "RegExp `v` flag / constructor supports it",
      "RegExp `v` flag / shows up in flags"
    ],
    "es": "ES2024",
    "targets": {
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      "opera": "98",
      "edge": "112",
      "firefox": "116",
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      "ios": "17",
      "opera_mobile": "75",
      "electron": "24.0"
    }
  },
  {
    "name": "DuplicateNamedCapturingGroupsRegex",
    "babel": "transform-duplicate-named-capturing-groups-regex",
    "features": [
      "Duplicate named capturing groups"
    ],
    "es": "ES2025",
    "targets": {
      "chrome": "126",
      "opera": "112",
      "edge": "126",
      "firefox": "129",
      "safari": "17.4",
      "node": "23",
      "ios": "17.4",
      "electron": "31.0"
    }
  },
  {
    "name": "RegexpModifiers",
    "babel": "transform-regexp-modifiers",
    "features": [
      "RegExp Pattern Modifiers"
    ],
    "es": "ES2025",
    "targets": {
      "chrome": "125",
      "opera": "111",
      "edge": "125",
      "firefox": "132",
      "node": "23",
      "electron": "31.0"
    }
  }
]