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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 DEWEY_DECIMAL_REGEX = /^[0-9]{1,3}(?:\.[0-9]+)?$/; const validate = (value, ast) => { if (typeof value !== 'string') { throw createGraphQLError(`Value is not string: ${value}`, { nodes: ast }); } if (!DEWEY_DECIMAL_REGEX.test(value)) { throw createGraphQLError(`Value is not a valid Dewey Decimal Number: ${value}`, { nodes: ast }); } return value; }; const specifiedByURL = 'https://www.oclc.org/content/dam/oclc/dewey/resources/summaries/deweysummaries.pdf'; export const GraphQLDeweyDecimalConfig = { name: 'DeweyDecimal', description: `A field whose value conforms to the standard DeweyDecimal format as specified by the OCLC https://www.oclc.org/content/dam/oclc/dewey/resources/summaries/deweysummaries.pdf`, serialize: validate, parseValue: validate, parseLiteral(ast) { if (ast.kind !== Kind.STRING) { throw createGraphQLError(`Can only validate strings as DeweyDecimal but got a: ${ast.kind}`, { nodes: ast, }); } return validate(ast.value, ast); }, specifiedByURL, specifiedByUrl: specifiedByURL, extensions: { codegenScalarType: 'string', jsonSchema: { title: 'DeweyDecimal', type: 'string', pattern: DEWEY_DECIMAL_REGEX.source, }, }, }; export const GraphQLDeweyDecimal = /*#__PURE__*/ new GraphQLScalarType(GraphQLDeweyDecimalConfig);