graphql-scalars
Version:
A collection of scalar types not included in base GraphQL.
37 lines (36 loc) • 1.41 kB
JavaScript
import { GraphQLScalarType, Kind } from 'graphql';
import { createGraphQLError } from '../error.js';
const SEMVER_REGEX = /^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$/;
const validate = (value, ast) => {
if (typeof value !== 'string') {
throw createGraphQLError(`Value is not string: ${value}`, ast ? { nodes: ast } : undefined);
}
if (!SEMVER_REGEX.test(value)) {
throw createGraphQLError(`Value is not a valid Semantic Version: ${value}`, ast ? { nodes: ast } : undefined);
}
return value;
};
export const GraphQLSemVer = /*#__PURE__*/ new GraphQLScalarType({
name: `SemVer`,
description: `A field whose value is a Semantic Version: https://semver.org`,
serialize(value) {
return validate(value);
},
parseValue(value) {
return validate(value);
},
parseLiteral(ast) {
if (ast.kind !== Kind.STRING) {
throw createGraphQLError(`Can only validate strings as Semantic Version but got a: ${ast.kind}`, { nodes: ast });
}
return validate(ast.value, ast);
},
extensions: {
codegenScalarType: 'string',
jsonSchema: {
title: 'SemVer',
type: 'string',
pattern: SEMVER_REGEX.source,
},
},
});