graphql
Version:
A Query Language and Runtime which can target any service.
34 lines • 1.86 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ScalarLeafsRule = ScalarLeafsRule;
const inspect_ts_1 = require("../../jsutils/inspect.js");
const GraphQLError_ts_1 = require("../../error/GraphQLError.js");
const definition_ts_1 = require("../../type/definition.js");
function ScalarLeafsRule(context) {
return {
Field(node) {
const type = context.getType();
const selectionSet = node.selectionSet;
if (type) {
if ((0, definition_ts_1.isLeafType)((0, definition_ts_1.getNamedType)(type))) {
if (selectionSet) {
const fieldName = node.name.value;
const typeStr = (0, inspect_ts_1.inspect)(type);
context.reportError(new GraphQLError_ts_1.GraphQLError(`Field "${fieldName}" must not have a selection since type "${typeStr}" has no subfields.`, { nodes: selectionSet }));
}
}
else if (!selectionSet) {
const fieldName = node.name.value;
const typeStr = (0, inspect_ts_1.inspect)(type);
context.reportError(new GraphQLError_ts_1.GraphQLError(`Field "${fieldName}" of type "${typeStr}" must have a selection of subfields. Did you mean "${fieldName} { ... }"?`, { nodes: node }));
}
else if (selectionSet.selections.length === 0) {
const fieldName = node.name.value;
const typeStr = (0, inspect_ts_1.inspect)(type);
context.reportError(new GraphQLError_ts_1.GraphQLError(`Field "${fieldName}" of type "${typeStr}" must have at least one field selected.`, { nodes: node }));
}
}
},
};
}
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