We recommend using cross-fetch for older browsers and Node. If you're targeting an environment that doesn't include fetch (such as older browsers or the server), you need to pass your own fetch to HttpLink via its constructor options. This is the case for React Native and most modern browsers. HttpLink requires that fetch is present in your runtime environment. Providing a fetch replacement for certain environments See Overriding the default print function. (default: false)Ī function to customize AST formatting in requests. If true, HttpLink uses GET requests instead of POST requests to execute query operations (but not mutation operations). Include this to override the values of certain options that are provided to the fetch call. (valid values: omit, include, same-origin) (default: false)Ī string representing the credentials policy to use for the fetch call. If true, header values retain their capitalization for non-http-spec-compliant servers.
See Providing a fetch replacement for certain environments.Īn object containing header names and values to include in each request. (default: false)Ī fetch-compatible API for making a request. If true, you can pass an extensions field to your GraphQL server. A string endpoint or function that resolves to the GraphQL server you want to execute operations against.
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