json-schema-describes-subset/dist/built-in-plugins/one-of.js

Tools for static JSON schema analysis, including functions to determine if one schema describes a subset of another or if a schema describes the empty set or to convert a schema to its disjunctive normal form (DNF).

import { AllOfSchema, AnyOfSchema, NotSchema, } from '../atomic-schema/index.js';
import { isJSONSchema } from '../json-schema/index.js';
import { isArrayOf } from '../utils/type-guards/index.js';
export const oneOfExtraction = {
    extract: ({ schema: { oneOf }, split }) => {
        if (!isArrayOf(isJSONSchema)(oneOf))
            return true;
        const anyOf = [];
        for (let i = 0; i < oneOf.length; i++) {
            anyOf.push(new AllOfSchema(oneOf.map((subschema, j) => {
                const atomicSubschema = split(subschema);
                return i === j ? atomicSubschema : new NotSchema(atomicSubschema);
            })));
        }
        return new AnyOfSchema(anyOf);
    },
};
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