core-types/dist/lib/validate.js

Generic type declarations for e.g. TypeScript, GraphQL and JSON Schema

import { MalformedTypeError } from './error.js';
import { hasConstEnum, isEqual } from './util.js';
export function validate(node) {
    if (hasConstEnum(node))
        validateConstEnum(node);
    if (node.type === 'and')
        node.and.forEach(subNode => validate(subNode));
    if (node.type === 'or')
        node.or.forEach(subNode => validate(subNode));
}
function validateConstEnum(node) {
    if (node.enum && node.enum.length === 0)
        throw new MalformedTypeError("Empty enum is not allowed", node);
    if (node.enum && node.const !== undefined) {
        if (!node.enum.some(entry => isEqual(entry, node.const)))
            throw new MalformedTypeError("Enum and const are both set, but enum doesn't contain const", node);
    }
    // TODO: Check data type of enum/const matching type
}