@apollo/client
Version:
A fully-featured caching GraphQL client.
151 lines • 6.41 kB
JavaScript
import { __assign, __rest as __rest_1, __spreadArray } from "tslib";
import { __rest } from "tslib";
import { mergeDeep } from "../common/mergeDeep.js";
export function concatPagination(keyArgs) {
if (keyArgs === void 0) { keyArgs = false; }
return {
keyArgs: keyArgs,
merge: function (existing, incoming) {
return existing ? __spreadArray(__spreadArray([], existing, true), incoming, true) : incoming;
},
};
}
export function offsetLimitPagination(keyArgs) {
if (keyArgs === void 0) { keyArgs = false; }
return {
keyArgs: keyArgs,
merge: function (existing, incoming, _a) {
var args = _a.args;
var merged = existing ? existing.slice(0) : [];
if (incoming) {
if (args) {
var _b = args.offset, offset = _b === void 0 ? 0 : _b;
for (var i = 0; i < incoming.length; ++i) {
merged[offset + i] = incoming[i];
}
}
else {
merged.push.apply(merged, incoming);
}
}
return merged;
},
};
}
export function relayStylePagination(keyArgs) {
if (keyArgs === void 0) { keyArgs = false; }
return {
keyArgs: keyArgs,
read: function (existing, _a) {
var canRead = _a.canRead, readField = _a.readField;
if (!existing)
return existing;
var edges = [];
var firstEdgeCursor = "";
var lastEdgeCursor = "";
existing.edges.forEach(function (edge) {
if (canRead(readField("node", edge))) {
edges.push(edge);
if (edge.cursor) {
firstEdgeCursor = firstEdgeCursor || edge.cursor || "";
lastEdgeCursor = edge.cursor || lastEdgeCursor;
}
}
});
var _b = existing.pageInfo || {}, startCursor = _b.startCursor, endCursor = _b.endCursor;
return __assign(__assign({}, getExtras(existing)), { edges: edges, pageInfo: __assign(__assign({}, existing.pageInfo), { startCursor: startCursor || firstEdgeCursor, endCursor: endCursor || lastEdgeCursor }) });
},
merge: function (existing, incoming, _a) {
var args = _a.args, isReference = _a.isReference, readField = _a.readField;
if (!existing) {
existing = makeEmptyData();
}
if (!incoming) {
return existing;
}
var incomingEdges = incoming.edges ? incoming.edges.map(function (edge) {
if (isReference(edge = __assign({}, edge))) {
edge.cursor = readField("cursor", edge);
}
return edge;
}) : [];
if (incoming.pageInfo) {
var pageInfo_1 = incoming.pageInfo;
var startCursor = pageInfo_1.startCursor, endCursor = pageInfo_1.endCursor;
var firstEdge = incomingEdges[0];
var lastEdge = incomingEdges[incomingEdges.length - 1];
if (firstEdge && startCursor) {
firstEdge.cursor = startCursor;
}
if (lastEdge && endCursor) {
lastEdge.cursor = endCursor;
}
var firstCursor = firstEdge && firstEdge.cursor;
if (firstCursor && !startCursor) {
incoming = mergeDeep(incoming, {
pageInfo: {
startCursor: firstCursor,
},
});
}
var lastCursor = lastEdge && lastEdge.cursor;
if (lastCursor && !endCursor) {
incoming = mergeDeep(incoming, {
pageInfo: {
endCursor: lastCursor,
},
});
}
}
var prefix = existing.edges;
var suffix = [];
if (args && args.after) {
var index = prefix.findIndex(function (edge) { return edge.cursor === args.after; });
if (index >= 0) {
prefix = prefix.slice(0, index + 1);
}
}
else if (args && args.before) {
var index = prefix.findIndex(function (edge) { return edge.cursor === args.before; });
suffix = index < 0 ? prefix : prefix.slice(index);
prefix = [];
}
else if (incoming.edges) {
prefix = [];
}
var edges = __spreadArray(__spreadArray(__spreadArray([], prefix, true), incomingEdges, true), suffix, true);
var pageInfo = __assign(__assign({}, incoming.pageInfo), existing.pageInfo);
if (incoming.pageInfo) {
var _b = incoming.pageInfo, hasPreviousPage = _b.hasPreviousPage, hasNextPage = _b.hasNextPage, startCursor = _b.startCursor, endCursor = _b.endCursor, extras = __rest_1(_b, ["hasPreviousPage", "hasNextPage", "startCursor", "endCursor"]);
Object.assign(pageInfo, extras);
if (!prefix.length) {
if (void 0 !== hasPreviousPage)
pageInfo.hasPreviousPage = hasPreviousPage;
if (void 0 !== startCursor)
pageInfo.startCursor = startCursor;
}
if (!suffix.length) {
if (void 0 !== hasNextPage)
pageInfo.hasNextPage = hasNextPage;
if (void 0 !== endCursor)
pageInfo.endCursor = endCursor;
}
}
return __assign(__assign(__assign({}, getExtras(existing)), getExtras(incoming)), { edges: edges, pageInfo: pageInfo });
},
};
}
var getExtras = function (obj) { return __rest(obj, notExtras); };
var notExtras = ["edges", "pageInfo"];
function makeEmptyData() {
return {
edges: [],
pageInfo: {
hasPreviousPage: false,
hasNextPage: true,
startCursor: "",
endCursor: "",
},
};
}
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