graphql-scalars
Version:
A collection of scalar types not included in base GraphQL.
57 lines (56 loc) • 1.9 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.identity = identity;
exports.ensureObject = ensureObject;
exports.parseObject = parseObject;
exports.parseLiteral = parseLiteral;
const graphql_1 = require("graphql");
const error_js_1 = require("../../error.js");
function identity(value) {
return value;
}
function ensureObject(value, ast) {
if (typeof value !== 'object' || value === null || Array.isArray(value)) {
throw (0, error_js_1.createGraphQLError)(`JSONObject cannot represent non-object value: ${value}`, ast
? {
nodes: ast,
}
: undefined);
}
return value;
}
function parseObject(ast, variables) {
if (ast.kind !== graphql_1.Kind.OBJECT) {
throw (0, error_js_1.createGraphQLError)(`JSONObject cannot represent non-object value: ${(0, graphql_1.print)(ast)}`, ast
? {
nodes: ast,
}
: undefined);
}
const value = Object.create(null);
ast.fields.forEach(field => {
// eslint-disable-next-line no-use-before-define
value[field.name.value] = parseLiteral(field.value, variables);
});
return value;
}
function parseLiteral(ast, variables) {
switch (ast.kind) {
case graphql_1.Kind.STRING:
case graphql_1.Kind.BOOLEAN:
return ast.value;
case graphql_1.Kind.INT:
case graphql_1.Kind.FLOAT:
return parseFloat(ast.value);
case graphql_1.Kind.OBJECT:
return parseObject(ast, variables);
case graphql_1.Kind.LIST:
return ast.values.map(n => parseLiteral(n, variables));
case graphql_1.Kind.NULL:
return null;
case graphql_1.Kind.VARIABLE: {
const name = ast.name.value;
return variables ? variables[name] : undefined;
}
}
}