{
    "sec-string.prototype.iswellformed": [
        {
            "engines": [
                "blink",
                "webkit"
            ],
            "filename": "javascript/builtins/String.json",
            "name": "isWellFormed",
            "slug": "JavaScript/Reference/Global_Objects/String/isWellFormed",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/isWellFormed",
            "summary": "The isWellFormed() method of String values returns a boolean indicating whether this string contains any lone surrogates.",
            "support": {
                "chrome": {
                    "version_added": "111"
                },
                "chrome_android": "mirror",
                "deno": {
                    "version_added": "1.32"
                },
                "edge": "mirror",
                "firefox": {
                    "version_added": false
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "nodejs": {
                    "version_added": "20.0.0"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "16.4"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "111"
                }
            },
            "title": "String.prototype.isWellFormed()"
        }
    ],
    "sec-string.prototype.towellformed": [
        {
            "engines": [
                "blink",
                "webkit"
            ],
            "filename": "javascript/builtins/String.json",
            "name": "toWellFormed",
            "slug": "JavaScript/Reference/Global_Objects/String/toWellFormed",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toWellFormed",
            "summary": "The toWellFormed() method of String values returns a string where all lone surrogates of this string are replaced with the Unicode replacement character U+FFFD.",
            "support": {
                "chrome": {
                    "version_added": "111"
                },
                "chrome_android": "mirror",
                "deno": {
                    "version_added": "1.32"
                },
                "edge": "mirror",
                "firefox": {
                    "version_added": false
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "nodejs": {
                    "version_added": "20.0.0"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "16.4"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "111"
                }
            },
            "title": "String.prototype.toWellFormed()"
        }
    ]
}