UNPKG

graphql-scalars

Version:

A collection of scalar types not included in base GraphQL.

43 lines (42 loc) 1.59 kB
import { GraphQLScalarType, Kind } from 'graphql'; import { createGraphQLError } from '../error.js'; const HSL_REGEX = /^hsl\(\s*(-?\d+|-?\d*.\d+)\s*,\s*(-?\d+|-?\d*.\d+)%\s*,\s*(-?\d+|-?\d*.\d+)%\s*\)$/; const validate = (value, ast) => { if (typeof value !== 'string') { throw createGraphQLError(`Value is not string: ${value}`, ast ? { nodes: ast } : undefined); } if (!HSL_REGEX.test(value)) { throw createGraphQLError(`Value is not a valid HSL color: ${value}`, ast ? { nodes: ast } : undefined); } return value; }; const specifiedByURL = 'https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#hsl()_and_hsla()'; export const GraphQLHSLConfig = /*#__PURE__*/ { name: `HSL`, description: `A field whose value is a CSS HSL color: https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#hsl()_and_hsla().`, serialize(value) { return validate(value); }, parseValue(value) { return validate(value); }, parseLiteral(ast) { if (ast.kind !== Kind.STRING) { throw createGraphQLError(`Can only validate strings as HSL colors but got a: ${ast.kind}`, { nodes: ast, }); } return validate(ast.value, ast); }, specifiedByURL, specifiedByUrl: specifiedByURL, extensions: { codegenScalarType: 'string', jsonSchema: { title: 'HSL', type: 'string', pattern: HSL_REGEX.source, }, }, }; export const GraphQLHSL = /*#__PURE__*/ new GraphQLScalarType(GraphQLHSLConfig);