Method has

deps/undici/undici.js:6221–6227

(name)

        return this.#state.filter((entry) => entry.name === name).map((entry) => entry.value);
      }
      has(name) {
        webidl.brandCheck(this, _FormData);
        const prefix = "FormData.has";
        webidl.argumentLengthCheck(arguments, 1, prefix);
        name = webidl.converters.USVString(name);
        return this.#state.findIndex((entry) => entry.name === name) !== -1;
      }
      set(name, value, filename = void 0) {
        webidl.brandCheck(this, _FormData);
        const prefix = "FormData.set";