graphql/utilities/replaceVariables.mjs.map

A Query Language and Runtime which can target any service.

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// => '{ stars: 4 }'\n * ```\n */\nexport function replaceVariables(\n  valueNode: ValueNode,\n  variableValues?: Maybe<VariableValues>,\n  fragmentVariableValues?: Maybe<FragmentVariableValues>,\n): ConstValueNode {\n  switch (valueNode.kind) {\n    case Kind.VARIABLE: {\n      const varName = valueNode.name.value;\n      const fragmentVariableValueSource =\n        fragmentVariableValues?.sources[varName];\n\n      if (fragmentVariableValueSource) {\n        const value = fragmentVariableValueSource.value;\n        if (value === undefined) {\n          const defaultValue = fragmentVariableValueSource.signature.default;\n          if (defaultValue !== undefined) {\n            return defaultValue.literal;\n          }\n          return { kind: Kind.NULL };\n        }\n        return replaceVariables(\n          value,\n          variableValues,\n          fragmentVariableValueSource.fragmentVariableValues,\n        );\n      }\n\n      const variableValueSource = variableValues?.sources[varName];\n      if (variableValueSource == null) {\n        return { kind: Kind.NULL };\n      }\n\n      if (variableValueSource.value === undefined) {\n        const defaultValue = variableValueSource.signature.default;\n        if (defaultValue !== undefined) {\n          return defaultValue.literal;\n        }\n      }\n\n      return valueToLiteral(\n        variableValueSource.value,\n        variableValueSource.signature.type,\n      ) as ConstValueNode;\n    }\n    case Kind.OBJECT: {\n      const newFields: Array<ObjectFieldNode> = [];\n      for (const field of valueNode.fields) {\n        if (field.value.kind === Kind.VARIABLE) {\n          const scopedVariableSource =\n            fragmentVariableValues?.sources[field.value.name.value] ??\n            variableValues?.sources[field.value.name.value];\n\n          if (\n            scopedVariableSource?.value === undefined &&\n            scopedVariableSource?.signature.default === undefined\n          ) {\n            continue;\n          }\n        }\n        const newFieldNodeValue = replaceVariables(\n          field.value,\n          variableValues,\n          fragmentVariableValues,\n        );\n        newFields.push({\n          ...field,\n          value: newFieldNodeValue,\n        });\n      }\n      return {\n        ...valueNode,\n        fields: newFields,\n      } as ConstValueNode;\n    }\n    case Kind.LIST: {\n      const newValues: Array<ValueNode> = [];\n      for (const value of valueNode.values) {\n        const newItemNodeValue = replaceVariables(\n          value,\n          variableValues,\n          fragmentVariableValues,\n        );\n        newValues.push(newItemNodeValue);\n      }\n      return {\n        ...valueNode,\n        values: newValues,\n      } as ConstValueNode;\n    }\n    default: {\n      return valueNode;\n    }\n  }\n}\n"]}