{
  "javascript": {
    "regular_expressions": {
      "backreference": {
        "__compat": {
          "description": "Backreference: `\\1`, `\\2`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Backreference",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-DecimalEscape",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "nodejs": {
              "version_added": "0.10.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "capturing_group": {
        "__compat": {
          "description": "Capturing group: `(...)`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Capturing_group",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Atom",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "nodejs": {
              "version_added": "0.10.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "character_class": {
        "__compat": {
          "description": "Character class: `[...]`, `[^...]`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Character_class",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-CharacterClass",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "nodejs": {
              "version_added": "0.10.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "character_class_escape": {
        "__compat": {
          "description": "Character class escape: `\\d`, `\\D`, `\\w`, `\\W`, `\\s`, `\\S`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Character_class_escape",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-CharacterClassEscape",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "nodejs": {
              "version_added": "0.10.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "character_escape": {
        "__compat": {
          "description": "Character escape: `\\n`, `\\x`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Character_escape",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-CharacterEscape",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "nodejs": {
              "version_added": "0.10.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "unicode": {
          "__compat": {
            "description": "Unicode character escape: `\\u{...}`",
            "tags": [
              "web-features:regexp"
            ],
            "support": {
              "chrome": {
                "version_added": "50"
              },
              "chrome_android": "mirror",
              "deno": {
                "version_added": "1.0"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "46"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "nodejs": {
                "version_added": "6.0.0"
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "10"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "disjunction": {
        "__compat": {
          "description": "Disjunction: `|`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Disjunction",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Disjunction",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "nodejs": {
              "version_added": "0.10.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "input_boundary_assertion": {
        "__compat": {
          "description": "Input boundary assertion: `^`, `$`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Input_boundary_assertion",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Assertion",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "nodejs": {
              "version_added": "0.10.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "literal_character": {
        "__compat": {
          "description": "Literal character: `a`, `b`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Literal_character",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-PatternCharacter",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "nodejs": {
              "version_added": "0.10.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "lookahead_assertion": {
        "__compat": {
          "description": "Lookahead assertion: `(?=...)`, `(?!...)`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Lookahead_assertion",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Assertion",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "nodejs": {
              "version_added": "0.10.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "lookbehind_assertion": {
        "__compat": {
          "description": "Lookbehind assertion: `(?&lt;=...)`, `(?&lt;!...)`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Lookbehind_assertion",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Assertion",
          "tags": [
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "62"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": "mirror",
            "firefox": {
              "version_added": "78"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": "8.10.0"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "16.4"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "modifier": {
        "__compat": {
          "description": "Modifier: `(?ims-ims:...)`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Modifier",
          "spec_url": "https://github.com/tc39/proposal-regexp-modifiers#syntax",
          "tags": [
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "125"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.44"
            },
            "edge": "mirror",
            "firefox": {
              "version_added": "132"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": "23.0.0"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "named_backreference": {
        "__compat": {
          "description": "Named backreference: `\\k&lt;name&gt;`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Named_backreference",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-AtomEscape",
          "tags": [
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "64"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": "mirror",
            "firefox": {
              "version_added": "78"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": "10.0.0"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "11.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "named_capturing_group": {
        "__compat": {
          "description": "Named capture group: `(?&lt;name&gt;...)`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Named_capturing_group",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Atom",
          "tags": [
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "64"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": "mirror",
            "firefox": {
              "version_added": "78"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": "10.0.0"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "11.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "duplicate_named_capturing_groups": {
          "__compat": {
            "description": "Duplicate names in different disjunction alternatives are allowed",
            "tags": [
              "web-features:regexp"
            ],
            "support": {
              "chrome": {
                "version_added": "125"
              },
              "chrome_android": "mirror",
              "deno": {
                "version_added": false
              },
              "edge": "mirror",
              "firefox": {
                "version_added": "129"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "nodejs": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "non_capturing_group": {
        "__compat": {
          "description": "Non-capturing group: `(?:...)`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Non-capturing_group",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Atom",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "nodejs": {
              "version_added": "0.10.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "quantifier": {
        "__compat": {
          "description": "Quantifier: `*`, `+`, `?`, `{n}`, `{n,}`, `{n,m}`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Quantifier",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Quantifier",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "nodejs": {
              "version_added": "0.10.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
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          "status": {
            "experimental": false,
            "standard_track": true,
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        }
      },
      "unicode_character_class_escape": {
        "__compat": {
          "description": "Unicode character class escape: `\\p{...}`, `\\P{...}`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Unicode_character_class_escape",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-CharacterClassEscape",
          "tags": [
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
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            "chrome_android": "mirror",
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            "edge": "mirror",
            "firefox": {
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            "opera": "mirror",
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          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "wildcard": {
        "__compat": {
          "description": "Wildcard: `.`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Wildcard",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Atom",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
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              "version_added": "12"
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              "version_added": "1"
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            "ie": {
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            "opera": {
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            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "word_boundary_assertion": {
        "__compat": {
          "description": "Word boundary assertion: `\\b`, `\\B`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Word_boundary_assertion",
          "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Assertion",
          "tags": [
            "web-features:snapshot:ecmascript-3",
            "web-features:regexp"
          ],
          "support": {
            "chrome": {
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            "firefox": {
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            "ie": {
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            "opera": {
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            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}