apollo-angular-link-headers/esm2015/index.js

An Apollo Link to easily transform headers from being a key-value object to an instance of HttpHeaders. Great combination with apollo-angular-link-http.

import { HttpHeaders } from '@angular/common/http';
import { ApolloLink } from 'apollo-link';
export const httpHeaders = () => {
    return new ApolloLink((operation, forward) => {
        const { getContext, setContext } = operation;
        const context = getContext();
        if (context.headers) {
            setContext(Object.assign(Object.assign({}, context), { headers: new HttpHeaders(context.headers) }));
        }
        return forward(operation);
    });
};
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