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Fix: when alias returns a falsy value, it may return undefined #303

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Fix: when alias returns a falsy value, it may return undefined #303

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6 changes: 4 additions & 2 deletions packages/apollo-link-state/src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -87,8 +87,10 @@ export const withClientState = (
const aliasNeeded = resultKey !== fieldName;

// If aliasedValue is defined, some other link or server already returned a value
if (aliasedNode !== undefined || preAliasingNode !== undefined) {
return aliasedNode || preAliasingNode;
if (aliasedNode !== undefined) {
return aliasedNode;
} else if (preAliasingNode !== undefined) {
return preAliasingNode;
}

// Look for the field in the custom resolver map
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