@apollo/client
Version:
A fully-featured caching GraphQL client.
32 lines • 1.2 kB
JavaScript
import { isNonEmptyArray } from "./arrays.js";
import { DeepMerger } from "./mergeDeep.js";
export function isExecutionPatchIncrementalResult(value) {
return "incremental" in value;
}
export function isExecutionPatchInitialResult(value) {
return "hasNext" in value && "data" in value;
}
export function isExecutionPatchResult(value) {
return (isExecutionPatchIncrementalResult(value) ||
isExecutionPatchInitialResult(value));
}
export function mergeIncrementalData(prevResult, result) {
var mergedData = prevResult;
var merger = new DeepMerger();
if (isExecutionPatchIncrementalResult(result) &&
isNonEmptyArray(result.incremental)) {
result.incremental.forEach(function (_a) {
var data = _a.data, path = _a.path;
for (var i = path.length - 1; i >= 0; --i) {
var key = path[i];
var isNumericKey = !isNaN(+key);
var parent_1 = isNumericKey ? [] : {};
parent_1[key] = data;
data = parent_1;
}
mergedData = merger.merge(mergedData, data);
});
}
return mergedData;
}
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