graphql-scalars
Version:
A collection of scalar types not included in base GraphQL.
43 lines (42 loc) • 1.59 kB
JavaScript
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);