graphql-scalars
Version:
A collection of scalar types not included in base GraphQL.
62 lines (61 loc) • 2.02 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.GraphQLUSCurrency = void 0;
// https://github.com/abhiaiyer91/graphql-currency-scalars
const graphql_1 = require("graphql");
const error_js_1 = require("../error.js");
function generateCurrency(value) {
if (typeof value !== 'number') {
throw (0, error_js_1.createGraphQLError)(`Currency cannot represent non integer type ${JSON.stringify(value)}`);
}
const currencyInCents = parseInt(value.toString(), 10);
return (currencyInCents / 100).toLocaleString('en-US', {
style: 'currency',
currency: 'USD',
});
}
function generateCents(value) {
const digits = value.replace('$', '').replace(',', '');
const number = parseFloat(digits);
return number * 100;
}
/**
* An Currency Scalar.
*
* Input:
* This scalar takes a currency string as input and
* formats it to currency in cents.
*
* Output:
* This scalar serializes currency in cents to
* currency strings.
*/
exports.GraphQLUSCurrency = new graphql_1.GraphQLScalarType({
name: 'USCurrency',
description: 'A currency string, such as $21.25',
serialize: generateCurrency,
parseValue(value) {
if (typeof value !== 'string') {
throw (0, error_js_1.createGraphQLError)(`Currency cannot represent non string type ${JSON.stringify(value)}`);
}
return generateCents(value);
},
parseLiteral(ast) {
if (ast.kind === graphql_1.Kind.STRING) {
if (typeof ast.value === 'string') {
return generateCents(ast.value);
}
}
throw (0, error_js_1.createGraphQLError)(`Currency cannot represent an invalid currency-string ${JSON.stringify(ast)}.`, {
nodes: ast,
});
},
extensions: {
codegenScalarType: 'string',
jsonSchema: {
title: 'USCurrency',
type: 'string',
pattern: '^\\$[0-9]+(\\.[0-9]{2})?$',
},
},
});