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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 HSLA_REGEX = /^hsla\(\s*(-?\d+|-?\d*.\d+)\s*,\s*(-?\d+|-?\d*.\d+)%\s*,\s*(-?\d+|-?\d*.\d+)%\s*,\s*(-?\d+|-?\d*.\d+)\s*\)$/; const validate = (value, ast) => { if (typeof value !== 'string') { throw createGraphQLError(`Value is not string: ${value}`, ast ? { nodes: ast } : undefined); } if (!HSLA_REGEX.test(value)) { throw createGraphQLError(`Value is not a valid HSLA color: ${value}`, ast ? { nodes: ast } : undefined); } return value; }; export const GraphQLHSLA = /*#__PURE__*/ new GraphQLScalarType({ name: `HSLA`, description: `A field whose value is a CSS HSLA 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 HSLA colors but got a: ${ast.kind}`, { nodes: ast, }); } return validate(ast.value, ast); }, extensions: { codegenScalarType: 'string', jsonSchema: { title: 'HSLA', type: 'string', pattern: HSLA_REGEX.source, }, }, });