Method append

deps/undici/undici.js:6180–6195

(name, value, filename = void 0)

        }
      }
      append(name, value, filename = void 0) {
        webidl.brandCheck(this, _FormData);
        const prefix = "FormData.append";
        webidl.argumentLengthCheck(arguments, 2, prefix);
        name = webidl.converters.USVString(name);
        if (arguments.length === 3 || webidl.is.Blob(value)) {
          value = webidl.converters.Blob(value, prefix, "value");
          if (filename !== void 0) {
            filename = webidl.converters.USVString(filename);
          }
        } else {
          value = webidl.converters.USVString(value);
        }
        const entry = makeEntry(name, value, filename);
        this.#state.push(entry);
      }
      delete(name) {
        webidl.brandCheck(this, _FormData);
        const prefix = "FormData.delete";