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graphql-scalars

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A collection of scalar types not included in base GraphQL.

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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, }, }, });