export function normalizeEncoding(enc: string | null) { if (enc == null || enc === "utf8" || enc === "utf-8") return "utf8"; return slowCases(enc as string);}
function slowCases(enc: string) { switch (enc.length) { case 4: if (enc === "UTF8") return "utf8"; if (enc === "ucs2" || enc === "UCS2") return "utf16le"; enc = `${enc}`.toLowerCase(); if (enc === "utf8") return "utf8"; if (enc === "ucs2") return "utf16le"; break; case 3: if ( enc === "hex" || enc === "HEX" || `${enc}`.toLowerCase() === "hex" ) { return "hex"; } break; case 5: if (enc === "ascii") return "ascii"; if (enc === "ucs-2") return "utf16le"; if (enc === "UTF-8") return "utf8"; if (enc === "ASCII") return "ascii"; if (enc === "UCS-2") return "utf16le"; enc = `${enc}`.toLowerCase(); if (enc === "utf-8") return "utf8"; if (enc === "ascii") return "ascii"; if (enc === "ucs-2") return "utf16le"; break; case 6: if (enc === "base64") return "base64"; if (enc === "latin1" || enc === "binary") return "latin1"; if (enc === "BASE64") return "base64"; if (enc === "LATIN1" || enc === "BINARY") return "latin1"; enc = `${enc}`.toLowerCase(); if (enc === "base64") return "base64"; if (enc === "latin1" || enc === "binary") return "latin1"; break; case 7: if ( enc === "utf16le" || enc === "UTF16LE" || `${enc}`.toLowerCase() === "utf16le" ) { return "utf16le"; } break; case 8: if ( enc === "utf-16le" || enc === "UTF-16LE" || `${enc}`.toLowerCase() === "utf-16le" ) { return "utf16le"; } break; case 9: if ( enc === "base64url" || enc === "BASE64URL" || `${enc}`.toLowerCase() === "base64url" ) { return "base64url"; } break; default: if (enc === "") return "utf8"; }}
export default { normalizeEncoding,};