67 lines
2.0 KiB
JavaScript
67 lines
2.0 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true,
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});
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exports.ScalarLeafsRule = ScalarLeafsRule;
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var _inspect = require('../../jsutils/inspect.js');
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var _GraphQLError = require('../../error/GraphQLError.js');
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var _definition = require('../../type/definition.js');
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/**
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* Scalar leafs
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*
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* A GraphQL document is valid only if all leaf fields (fields without
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* sub selections) are of scalar or enum types.
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*/
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function ScalarLeafsRule(context) {
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return {
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Field(node) {
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const type = context.getType();
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const selectionSet = node.selectionSet;
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if (type) {
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if ((0, _definition.isLeafType)((0, _definition.getNamedType)(type))) {
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if (selectionSet) {
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const fieldName = node.name.value;
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const typeStr = (0, _inspect.inspect)(type);
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context.reportError(
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new _GraphQLError.GraphQLError(
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`Field "${fieldName}" must not have a selection since type "${typeStr}" has no subfields.`,
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{
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nodes: selectionSet,
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},
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),
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);
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}
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} else if (!selectionSet) {
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const fieldName = node.name.value;
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const typeStr = (0, _inspect.inspect)(type);
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context.reportError(
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new _GraphQLError.GraphQLError(
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`Field "${fieldName}" of type "${typeStr}" must have a selection of subfields. Did you mean "${fieldName} { ... }"?`,
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{
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nodes: node,
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},
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),
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);
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} else if (selectionSet.selections.length === 0) {
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const fieldName = node.name.value;
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const typeStr = (0, _inspect.inspect)(type);
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context.reportError(
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new _GraphQLError.GraphQLError(
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`Field "${fieldName}" of type "${typeStr}" must have at least one field selected.`,
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{
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nodes: node,
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},
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),
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);
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}
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}
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},
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};
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}
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