@graphql-mesh/utils
Version:
54 lines (53 loc) • 1.99 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.withFilter = void 0;
function withFilter(asyncIteratorFn, filterFn) {
return async (rootValue, args, context, info) => {
const asyncIterator = await asyncIteratorFn(rootValue, args, context, info);
const getNextPromise = () => {
return new Promise((resolve, reject) => {
const inner = () => {
asyncIterator
.next()
.then(payload => {
if (payload.done === true) {
resolve(payload);
return;
}
Promise.resolve(filterFn(payload.value, args, context, info))
.catch(() => false) // We ignore errors from filter function
.then(filterResult => {
if (filterResult === true) {
resolve(payload);
return;
}
// Skip the current value and wait for the next one
inner();
})
.catch(() => false); // We ignore errors from filter function;
})
.catch(err => {
reject(err);
});
};
inner();
});
};
const asyncIterator2 = {
next() {
return getNextPromise();
},
return() {
return asyncIterator.return();
},
throw(error) {
return asyncIterator.throw(error);
},
[Symbol.asyncIterator]() {
return this;
},
};
return asyncIterator2;
};
}
exports.withFilter = withFilter;