How to specify environment in ApolloClient?

There is an option called connectToDevTools when instantiate an ApolloClient.

    /**
     * If `true`, the [Apollo Client Devtools](https://www.apollographql.com/docs/react/development-testing/developer-tooling/#apollo-client-devtools) browser extension can connect to Apollo Client.
     *
     * The default value is `false` in production and `true` in development (if there is a `window` object).
     * @deprecated Please use the `devtools.enabled` option.
     */
    connectToDevTools?: boolean;

It mentions production and development in code comment. But how can I specify current environment, I haven’t found related doc online.

You can find that info here:

Turning off development mode

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