Method set

github-actions/browserstack/set-browserstack-env.js:12518–12542

(name, value)

        }
        // https://fetch.spec.whatwg.org/#dom-headers-set
        set(name, value) {
          webidl.brandCheck(this, _Headers);
          webidl.argumentLengthCheck(arguments, 2, "Headers.set");
          const prefix = "Headers.set";
          name = webidl.converters.ByteString(name, prefix, "name");
          value = webidl.converters.ByteString(value, prefix, "value");
          value = headerValueNormalize(value);
          if (!isValidHeaderName(name)) {
            throw webidl.errors.invalidArgument({
              prefix,
              value: name,
              type: "header name"
            });
          } else if (!isValidHeaderValue(value)) {
            throw webidl.errors.invalidArgument({
              prefix,
              value,
              type: "header value"
            });
          }
          if (__privateGet(this, _guard) === "immutable") {
            throw new TypeError("immutable");
          }
          __privateGet(this, _headersList).set(name, value, false);
        }
        // https://fetch.spec.whatwg.org/#dom-headers-getsetcookie
        getSetCookie() {
          webidl.brandCheck(this, _Headers);