// zod-json-schema-compat.ts
// ----------------------------------------------------
// JSON Schema conversion for both Zod v3 and Zod v4 (Mini)
// v3 uses your vendored converter; v4 uses Mini's toJSONSchema
// ----------------------------------------------------
import * as z4mini from 'zod/v4-mini';
import { getObjectShape, safeParse, isZ4Schema, getLiteralValue } from './zod-compat.js';
import { zodToJsonSchema } from 'zod-to-json-schema';
function mapMiniTarget(t) {
if (!t)
return 'draft-7';
if (t === 'jsonSchema7' || t === 'draft-7')
return 'draft-7';
if (t === 'jsonSchema2019-09' || t === 'draft-2020-12')
return 'draft-2020-12';
return 'draft-7'; // fallback
}
export function toJsonSchemaCompat(schema, opts) {
if (isZ4Schema(schema)) {
// v4 branch — use Mini's built-in toJSONSchema
return z4mini.toJSONSchema(schema, {
target: mapMiniTarget(opts?.target),
io: opts?.pipeStrategy ?? 'input'
});
}
// v3 branch — use vendored converter
return zodToJsonSchema(schema, {
strictUnions: opts?.strictUnions ?? true,
pipeStrategy: opts?.pipeStrategy ?? 'input'
});
}
export function getMethodLiteral(schema) {
const shape = getObjectShape(schema);
const methodSchema = shape?.method;
if (!methodSchema) {
throw new Error('Schema is missing a method literal');
}
const value = getLiteralValue(methodSchema);
if (typeof value !== 'string') {
throw new Error('Schema method literal must be a string');
}
return value;
}
export function parseWithCompat(schema, data) {
const result = safeParse(schema, data);
if (!result.success) {
throw result.error;
}
return result.data;
}
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