877 lines
36 KiB
JavaScript
877 lines
36 KiB
JavaScript
import { $ZodRegistry, globalRegistry } from "./registries.js";
|
|
import { getEnumValues } from "./util.js";
|
|
export class JSONSchemaGenerator {
|
|
constructor(params) {
|
|
this.counter = 0;
|
|
this.metadataRegistry = params?.metadata ?? globalRegistry;
|
|
this.target = params?.target ?? "draft-2020-12";
|
|
this.unrepresentable = params?.unrepresentable ?? "throw";
|
|
this.override = params?.override ?? (() => { });
|
|
this.io = params?.io ?? "output";
|
|
this.seen = new Map();
|
|
}
|
|
process(schema, _params = { path: [], schemaPath: [] }) {
|
|
var _a;
|
|
const def = schema._zod.def;
|
|
const formatMap = {
|
|
guid: "uuid",
|
|
url: "uri",
|
|
datetime: "date-time",
|
|
json_string: "json-string",
|
|
regex: "", // do not set
|
|
};
|
|
// check for schema in seens
|
|
const seen = this.seen.get(schema);
|
|
if (seen) {
|
|
seen.count++;
|
|
// check if cycle
|
|
const isCycle = _params.schemaPath.includes(schema);
|
|
if (isCycle) {
|
|
seen.cycle = _params.path;
|
|
}
|
|
return seen.schema;
|
|
}
|
|
// initialize
|
|
const result = { schema: {}, count: 1, cycle: undefined, path: _params.path };
|
|
this.seen.set(schema, result);
|
|
// custom method overrides default behavior
|
|
const overrideSchema = schema._zod.toJSONSchema?.();
|
|
if (overrideSchema) {
|
|
result.schema = overrideSchema;
|
|
}
|
|
else {
|
|
const params = {
|
|
..._params,
|
|
schemaPath: [..._params.schemaPath, schema],
|
|
path: _params.path,
|
|
};
|
|
const parent = schema._zod.parent;
|
|
if (parent) {
|
|
// schema was cloned from another schema
|
|
result.ref = parent;
|
|
this.process(parent, params);
|
|
this.seen.get(parent).isParent = true;
|
|
}
|
|
else {
|
|
const _json = result.schema;
|
|
switch (def.type) {
|
|
case "string": {
|
|
const json = _json;
|
|
json.type = "string";
|
|
const { minimum, maximum, format, patterns, contentEncoding } = schema._zod
|
|
.bag;
|
|
if (typeof minimum === "number")
|
|
json.minLength = minimum;
|
|
if (typeof maximum === "number")
|
|
json.maxLength = maximum;
|
|
// custom pattern overrides format
|
|
if (format) {
|
|
json.format = formatMap[format] ?? format;
|
|
if (json.format === "")
|
|
delete json.format; // empty format is not valid
|
|
}
|
|
if (contentEncoding)
|
|
json.contentEncoding = contentEncoding;
|
|
if (patterns && patterns.size > 0) {
|
|
const regexes = [...patterns];
|
|
if (regexes.length === 1)
|
|
json.pattern = regexes[0].source;
|
|
else if (regexes.length > 1) {
|
|
result.schema.allOf = [
|
|
...regexes.map((regex) => ({
|
|
...(this.target === "draft-7" || this.target === "draft-4" ? { type: "string" } : {}),
|
|
pattern: regex.source,
|
|
})),
|
|
];
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case "number": {
|
|
const json = _json;
|
|
const { minimum, maximum, format, multipleOf, exclusiveMaximum, exclusiveMinimum } = schema._zod.bag;
|
|
if (typeof format === "string" && format.includes("int"))
|
|
json.type = "integer";
|
|
else
|
|
json.type = "number";
|
|
if (typeof exclusiveMinimum === "number") {
|
|
if (this.target === "draft-4") {
|
|
json.minimum = exclusiveMinimum;
|
|
json.exclusiveMinimum = true;
|
|
}
|
|
else {
|
|
json.exclusiveMinimum = exclusiveMinimum;
|
|
}
|
|
}
|
|
if (typeof minimum === "number") {
|
|
json.minimum = minimum;
|
|
if (typeof exclusiveMinimum === "number" && this.target !== "draft-4") {
|
|
if (exclusiveMinimum >= minimum)
|
|
delete json.minimum;
|
|
else
|
|
delete json.exclusiveMinimum;
|
|
}
|
|
}
|
|
if (typeof exclusiveMaximum === "number") {
|
|
if (this.target === "draft-4") {
|
|
json.maximum = exclusiveMaximum;
|
|
json.exclusiveMaximum = true;
|
|
}
|
|
else {
|
|
json.exclusiveMaximum = exclusiveMaximum;
|
|
}
|
|
}
|
|
if (typeof maximum === "number") {
|
|
json.maximum = maximum;
|
|
if (typeof exclusiveMaximum === "number" && this.target !== "draft-4") {
|
|
if (exclusiveMaximum <= maximum)
|
|
delete json.maximum;
|
|
else
|
|
delete json.exclusiveMaximum;
|
|
}
|
|
}
|
|
if (typeof multipleOf === "number")
|
|
json.multipleOf = multipleOf;
|
|
break;
|
|
}
|
|
case "boolean": {
|
|
const json = _json;
|
|
json.type = "boolean";
|
|
break;
|
|
}
|
|
case "bigint": {
|
|
if (this.unrepresentable === "throw") {
|
|
throw new Error("BigInt cannot be represented in JSON Schema");
|
|
}
|
|
break;
|
|
}
|
|
case "symbol": {
|
|
if (this.unrepresentable === "throw") {
|
|
throw new Error("Symbols cannot be represented in JSON Schema");
|
|
}
|
|
break;
|
|
}
|
|
case "null": {
|
|
_json.type = "null";
|
|
break;
|
|
}
|
|
case "any": {
|
|
break;
|
|
}
|
|
case "unknown": {
|
|
break;
|
|
}
|
|
case "undefined": {
|
|
if (this.unrepresentable === "throw") {
|
|
throw new Error("Undefined cannot be represented in JSON Schema");
|
|
}
|
|
break;
|
|
}
|
|
case "void": {
|
|
if (this.unrepresentable === "throw") {
|
|
throw new Error("Void cannot be represented in JSON Schema");
|
|
}
|
|
break;
|
|
}
|
|
case "never": {
|
|
_json.not = {};
|
|
break;
|
|
}
|
|
case "date": {
|
|
if (this.unrepresentable === "throw") {
|
|
throw new Error("Date cannot be represented in JSON Schema");
|
|
}
|
|
break;
|
|
}
|
|
case "array": {
|
|
const json = _json;
|
|
const { minimum, maximum } = schema._zod.bag;
|
|
if (typeof minimum === "number")
|
|
json.minItems = minimum;
|
|
if (typeof maximum === "number")
|
|
json.maxItems = maximum;
|
|
json.type = "array";
|
|
json.items = this.process(def.element, { ...params, path: [...params.path, "items"] });
|
|
break;
|
|
}
|
|
case "object": {
|
|
const json = _json;
|
|
json.type = "object";
|
|
json.properties = {};
|
|
const shape = def.shape; // params.shapeCache.get(schema)!;
|
|
for (const key in shape) {
|
|
json.properties[key] = this.process(shape[key], {
|
|
...params,
|
|
path: [...params.path, "properties", key],
|
|
});
|
|
}
|
|
// required keys
|
|
const allKeys = new Set(Object.keys(shape));
|
|
// const optionalKeys = new Set(def.optional);
|
|
const requiredKeys = new Set([...allKeys].filter((key) => {
|
|
const v = def.shape[key]._zod;
|
|
if (this.io === "input") {
|
|
return v.optin === undefined;
|
|
}
|
|
else {
|
|
return v.optout === undefined;
|
|
}
|
|
}));
|
|
if (requiredKeys.size > 0) {
|
|
json.required = Array.from(requiredKeys);
|
|
}
|
|
// catchall
|
|
if (def.catchall?._zod.def.type === "never") {
|
|
// strict
|
|
json.additionalProperties = false;
|
|
}
|
|
else if (!def.catchall) {
|
|
// regular
|
|
if (this.io === "output")
|
|
json.additionalProperties = false;
|
|
}
|
|
else if (def.catchall) {
|
|
json.additionalProperties = this.process(def.catchall, {
|
|
...params,
|
|
path: [...params.path, "additionalProperties"],
|
|
});
|
|
}
|
|
break;
|
|
}
|
|
case "union": {
|
|
const json = _json;
|
|
json.anyOf = def.options.map((x, i) => this.process(x, {
|
|
...params,
|
|
path: [...params.path, "anyOf", i],
|
|
}));
|
|
break;
|
|
}
|
|
case "intersection": {
|
|
const json = _json;
|
|
const a = this.process(def.left, {
|
|
...params,
|
|
path: [...params.path, "allOf", 0],
|
|
});
|
|
const b = this.process(def.right, {
|
|
...params,
|
|
path: [...params.path, "allOf", 1],
|
|
});
|
|
const isSimpleIntersection = (val) => "allOf" in val && Object.keys(val).length === 1;
|
|
const allOf = [
|
|
...(isSimpleIntersection(a) ? a.allOf : [a]),
|
|
...(isSimpleIntersection(b) ? b.allOf : [b]),
|
|
];
|
|
json.allOf = allOf;
|
|
break;
|
|
}
|
|
case "tuple": {
|
|
const json = _json;
|
|
json.type = "array";
|
|
const prefixItems = def.items.map((x, i) => this.process(x, { ...params, path: [...params.path, "prefixItems", i] }));
|
|
if (this.target === "draft-2020-12") {
|
|
json.prefixItems = prefixItems;
|
|
}
|
|
else {
|
|
json.items = prefixItems;
|
|
}
|
|
if (def.rest) {
|
|
const rest = this.process(def.rest, {
|
|
...params,
|
|
path: [...params.path, "items"],
|
|
});
|
|
if (this.target === "draft-2020-12") {
|
|
json.items = rest;
|
|
}
|
|
else {
|
|
json.additionalItems = rest;
|
|
}
|
|
}
|
|
// additionalItems
|
|
if (def.rest) {
|
|
json.items = this.process(def.rest, {
|
|
...params,
|
|
path: [...params.path, "items"],
|
|
});
|
|
}
|
|
// length
|
|
const { minimum, maximum } = schema._zod.bag;
|
|
if (typeof minimum === "number")
|
|
json.minItems = minimum;
|
|
if (typeof maximum === "number")
|
|
json.maxItems = maximum;
|
|
break;
|
|
}
|
|
case "record": {
|
|
const json = _json;
|
|
json.type = "object";
|
|
if (this.target !== "draft-4") {
|
|
json.propertyNames = this.process(def.keyType, {
|
|
...params,
|
|
path: [...params.path, "propertyNames"],
|
|
});
|
|
}
|
|
json.additionalProperties = this.process(def.valueType, {
|
|
...params,
|
|
path: [...params.path, "additionalProperties"],
|
|
});
|
|
break;
|
|
}
|
|
case "map": {
|
|
if (this.unrepresentable === "throw") {
|
|
throw new Error("Map cannot be represented in JSON Schema");
|
|
}
|
|
break;
|
|
}
|
|
case "set": {
|
|
if (this.unrepresentable === "throw") {
|
|
throw new Error("Set cannot be represented in JSON Schema");
|
|
}
|
|
break;
|
|
}
|
|
case "enum": {
|
|
const json = _json;
|
|
const values = getEnumValues(def.entries);
|
|
// Number enums can have both string and number values
|
|
if (values.every((v) => typeof v === "number"))
|
|
json.type = "number";
|
|
if (values.every((v) => typeof v === "string"))
|
|
json.type = "string";
|
|
json.enum = values;
|
|
break;
|
|
}
|
|
case "literal": {
|
|
const json = _json;
|
|
const vals = [];
|
|
for (const val of def.values) {
|
|
if (val === undefined) {
|
|
if (this.unrepresentable === "throw") {
|
|
throw new Error("Literal `undefined` cannot be represented in JSON Schema");
|
|
}
|
|
else {
|
|
// do not add to vals
|
|
}
|
|
}
|
|
else if (typeof val === "bigint") {
|
|
if (this.unrepresentable === "throw") {
|
|
throw new Error("BigInt literals cannot be represented in JSON Schema");
|
|
}
|
|
else {
|
|
vals.push(Number(val));
|
|
}
|
|
}
|
|
else {
|
|
vals.push(val);
|
|
}
|
|
}
|
|
if (vals.length === 0) {
|
|
// do nothing (an undefined literal was stripped)
|
|
}
|
|
else if (vals.length === 1) {
|
|
const val = vals[0];
|
|
json.type = val === null ? "null" : typeof val;
|
|
if (this.target === "draft-4") {
|
|
json.enum = [val];
|
|
}
|
|
else {
|
|
json.const = val;
|
|
}
|
|
}
|
|
else {
|
|
if (vals.every((v) => typeof v === "number"))
|
|
json.type = "number";
|
|
if (vals.every((v) => typeof v === "string"))
|
|
json.type = "string";
|
|
if (vals.every((v) => typeof v === "boolean"))
|
|
json.type = "string";
|
|
if (vals.every((v) => v === null))
|
|
json.type = "null";
|
|
json.enum = vals;
|
|
}
|
|
break;
|
|
}
|
|
case "file": {
|
|
const json = _json;
|
|
const file = {
|
|
type: "string",
|
|
format: "binary",
|
|
contentEncoding: "binary",
|
|
};
|
|
const { minimum, maximum, mime } = schema._zod.bag;
|
|
if (minimum !== undefined)
|
|
file.minLength = minimum;
|
|
if (maximum !== undefined)
|
|
file.maxLength = maximum;
|
|
if (mime) {
|
|
if (mime.length === 1) {
|
|
file.contentMediaType = mime[0];
|
|
Object.assign(json, file);
|
|
}
|
|
else {
|
|
json.anyOf = mime.map((m) => {
|
|
const mFile = { ...file, contentMediaType: m };
|
|
return mFile;
|
|
});
|
|
}
|
|
}
|
|
else {
|
|
Object.assign(json, file);
|
|
}
|
|
// if (this.unrepresentable === "throw") {
|
|
// throw new Error("File cannot be represented in JSON Schema");
|
|
// }
|
|
break;
|
|
}
|
|
case "transform": {
|
|
if (this.unrepresentable === "throw") {
|
|
throw new Error("Transforms cannot be represented in JSON Schema");
|
|
}
|
|
break;
|
|
}
|
|
case "nullable": {
|
|
const inner = this.process(def.innerType, params);
|
|
_json.anyOf = [inner, { type: "null" }];
|
|
break;
|
|
}
|
|
case "nonoptional": {
|
|
this.process(def.innerType, params);
|
|
result.ref = def.innerType;
|
|
break;
|
|
}
|
|
case "success": {
|
|
const json = _json;
|
|
json.type = "boolean";
|
|
break;
|
|
}
|
|
case "default": {
|
|
this.process(def.innerType, params);
|
|
result.ref = def.innerType;
|
|
_json.default = JSON.parse(JSON.stringify(def.defaultValue));
|
|
break;
|
|
}
|
|
case "prefault": {
|
|
this.process(def.innerType, params);
|
|
result.ref = def.innerType;
|
|
if (this.io === "input")
|
|
_json._prefault = JSON.parse(JSON.stringify(def.defaultValue));
|
|
break;
|
|
}
|
|
case "catch": {
|
|
// use conditionals
|
|
this.process(def.innerType, params);
|
|
result.ref = def.innerType;
|
|
let catchValue;
|
|
try {
|
|
catchValue = def.catchValue(undefined);
|
|
}
|
|
catch {
|
|
throw new Error("Dynamic catch values are not supported in JSON Schema");
|
|
}
|
|
_json.default = catchValue;
|
|
break;
|
|
}
|
|
case "nan": {
|
|
if (this.unrepresentable === "throw") {
|
|
throw new Error("NaN cannot be represented in JSON Schema");
|
|
}
|
|
break;
|
|
}
|
|
case "template_literal": {
|
|
const json = _json;
|
|
const pattern = schema._zod.pattern;
|
|
if (!pattern)
|
|
throw new Error("Pattern not found in template literal");
|
|
json.type = "string";
|
|
json.pattern = pattern.source;
|
|
break;
|
|
}
|
|
case "pipe": {
|
|
const innerType = this.io === "input" ? (def.in._zod.def.type === "transform" ? def.out : def.in) : def.out;
|
|
this.process(innerType, params);
|
|
result.ref = innerType;
|
|
break;
|
|
}
|
|
case "readonly": {
|
|
this.process(def.innerType, params);
|
|
result.ref = def.innerType;
|
|
_json.readOnly = true;
|
|
break;
|
|
}
|
|
// passthrough types
|
|
case "promise": {
|
|
this.process(def.innerType, params);
|
|
result.ref = def.innerType;
|
|
break;
|
|
}
|
|
case "optional": {
|
|
this.process(def.innerType, params);
|
|
result.ref = def.innerType;
|
|
break;
|
|
}
|
|
case "lazy": {
|
|
const innerType = schema._zod.innerType;
|
|
this.process(innerType, params);
|
|
result.ref = innerType;
|
|
break;
|
|
}
|
|
case "custom": {
|
|
if (this.unrepresentable === "throw") {
|
|
throw new Error("Custom types cannot be represented in JSON Schema");
|
|
}
|
|
break;
|
|
}
|
|
default: {
|
|
def;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// metadata
|
|
const meta = this.metadataRegistry.get(schema);
|
|
if (meta)
|
|
Object.assign(result.schema, meta);
|
|
if (this.io === "input" && isTransforming(schema)) {
|
|
// examples/defaults only apply to output type of pipe
|
|
delete result.schema.examples;
|
|
delete result.schema.default;
|
|
}
|
|
// set prefault as default
|
|
if (this.io === "input" && result.schema._prefault)
|
|
(_a = result.schema).default ?? (_a.default = result.schema._prefault);
|
|
delete result.schema._prefault;
|
|
// pulling fresh from this.seen in case it was overwritten
|
|
const _result = this.seen.get(schema);
|
|
return _result.schema;
|
|
}
|
|
emit(schema, _params) {
|
|
const params = {
|
|
cycles: _params?.cycles ?? "ref",
|
|
reused: _params?.reused ?? "inline",
|
|
// unrepresentable: _params?.unrepresentable ?? "throw",
|
|
// uri: _params?.uri ?? ((id) => `${id}`),
|
|
external: _params?.external ?? undefined,
|
|
};
|
|
// iterate over seen map;
|
|
const root = this.seen.get(schema);
|
|
if (!root)
|
|
throw new Error("Unprocessed schema. This is a bug in Zod.");
|
|
// initialize result with root schema fields
|
|
// Object.assign(result, seen.cached);
|
|
// returns a ref to the schema
|
|
// defId will be empty if the ref points to an external schema (or #)
|
|
const makeURI = (entry) => {
|
|
// comparing the seen objects because sometimes
|
|
// multiple schemas map to the same seen object.
|
|
// e.g. lazy
|
|
// external is configured
|
|
const defsSegment = this.target === "draft-2020-12" ? "$defs" : "definitions";
|
|
if (params.external) {
|
|
const externalId = params.external.registry.get(entry[0])?.id; // ?? "__shared";// `__schema${this.counter++}`;
|
|
// check if schema is in the external registry
|
|
const uriGenerator = params.external.uri ?? ((id) => id);
|
|
if (externalId) {
|
|
return { ref: uriGenerator(externalId) };
|
|
}
|
|
// otherwise, add to __shared
|
|
const id = entry[1].defId ?? entry[1].schema.id ?? `schema${this.counter++}`;
|
|
entry[1].defId = id; // set defId so it will be reused if needed
|
|
return { defId: id, ref: `${uriGenerator("__shared")}#/${defsSegment}/${id}` };
|
|
}
|
|
if (entry[1] === root) {
|
|
return { ref: "#" };
|
|
}
|
|
// self-contained schema
|
|
const uriPrefix = `#`;
|
|
const defUriPrefix = `${uriPrefix}/${defsSegment}/`;
|
|
const defId = entry[1].schema.id ?? `__schema${this.counter++}`;
|
|
return { defId, ref: defUriPrefix + defId };
|
|
};
|
|
// stored cached version in `def` property
|
|
// remove all properties, set $ref
|
|
const extractToDef = (entry) => {
|
|
// if the schema is already a reference, do not extract it
|
|
if (entry[1].schema.$ref) {
|
|
return;
|
|
}
|
|
const seen = entry[1];
|
|
const { ref, defId } = makeURI(entry);
|
|
seen.def = { ...seen.schema };
|
|
// defId won't be set if the schema is a reference to an external schema
|
|
if (defId)
|
|
seen.defId = defId;
|
|
// wipe away all properties except $ref
|
|
const schema = seen.schema;
|
|
for (const key in schema) {
|
|
delete schema[key];
|
|
}
|
|
schema.$ref = ref;
|
|
};
|
|
// throw on cycles
|
|
// break cycles
|
|
if (params.cycles === "throw") {
|
|
for (const entry of this.seen.entries()) {
|
|
const seen = entry[1];
|
|
if (seen.cycle) {
|
|
throw new Error("Cycle detected: " +
|
|
`#/${seen.cycle?.join("/")}/<root>` +
|
|
'\n\nSet the `cycles` parameter to `"ref"` to resolve cyclical schemas with defs.');
|
|
}
|
|
}
|
|
}
|
|
// extract schemas into $defs
|
|
for (const entry of this.seen.entries()) {
|
|
const seen = entry[1];
|
|
// convert root schema to # $ref
|
|
if (schema === entry[0]) {
|
|
extractToDef(entry); // this has special handling for the root schema
|
|
continue;
|
|
}
|
|
// extract schemas that are in the external registry
|
|
if (params.external) {
|
|
const ext = params.external.registry.get(entry[0])?.id;
|
|
if (schema !== entry[0] && ext) {
|
|
extractToDef(entry);
|
|
continue;
|
|
}
|
|
}
|
|
// extract schemas with `id` meta
|
|
const id = this.metadataRegistry.get(entry[0])?.id;
|
|
if (id) {
|
|
extractToDef(entry);
|
|
continue;
|
|
}
|
|
// break cycles
|
|
if (seen.cycle) {
|
|
// any
|
|
extractToDef(entry);
|
|
continue;
|
|
}
|
|
// extract reused schemas
|
|
if (seen.count > 1) {
|
|
if (params.reused === "ref") {
|
|
extractToDef(entry);
|
|
// biome-ignore lint:
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
// flatten _refs
|
|
const flattenRef = (zodSchema, params) => {
|
|
const seen = this.seen.get(zodSchema);
|
|
const schema = seen.def ?? seen.schema;
|
|
const _cached = { ...schema };
|
|
// already seen
|
|
if (seen.ref === null) {
|
|
return;
|
|
}
|
|
// flatten ref if defined
|
|
const ref = seen.ref;
|
|
seen.ref = null; // prevent recursion
|
|
if (ref) {
|
|
flattenRef(ref, params);
|
|
// merge referenced schema into current
|
|
const refSchema = this.seen.get(ref).schema;
|
|
if (refSchema.$ref && (params.target === "draft-7" || params.target === "draft-4")) {
|
|
schema.allOf = schema.allOf ?? [];
|
|
schema.allOf.push(refSchema);
|
|
}
|
|
else {
|
|
Object.assign(schema, refSchema);
|
|
Object.assign(schema, _cached); // prevent overwriting any fields in the original schema
|
|
}
|
|
}
|
|
// execute overrides
|
|
if (!seen.isParent)
|
|
this.override({
|
|
zodSchema: zodSchema,
|
|
jsonSchema: schema,
|
|
path: seen.path ?? [],
|
|
});
|
|
};
|
|
for (const entry of [...this.seen.entries()].reverse()) {
|
|
flattenRef(entry[0], { target: this.target });
|
|
}
|
|
const result = {};
|
|
if (this.target === "draft-2020-12") {
|
|
result.$schema = "https://json-schema.org/draft/2020-12/schema";
|
|
}
|
|
else if (this.target === "draft-7") {
|
|
result.$schema = "http://json-schema.org/draft-07/schema#";
|
|
}
|
|
else if (this.target === "draft-4") {
|
|
result.$schema = "http://json-schema.org/draft-04/schema#";
|
|
}
|
|
else {
|
|
// @ts-ignore
|
|
console.warn(`Invalid target: ${this.target}`);
|
|
}
|
|
if (params.external?.uri) {
|
|
const id = params.external.registry.get(schema)?.id;
|
|
if (!id)
|
|
throw new Error("Schema is missing an `id` property");
|
|
result.$id = params.external.uri(id);
|
|
}
|
|
Object.assign(result, root.def);
|
|
// build defs object
|
|
const defs = params.external?.defs ?? {};
|
|
for (const entry of this.seen.entries()) {
|
|
const seen = entry[1];
|
|
if (seen.def && seen.defId) {
|
|
defs[seen.defId] = seen.def;
|
|
}
|
|
}
|
|
// set definitions in result
|
|
if (params.external) {
|
|
}
|
|
else {
|
|
if (Object.keys(defs).length > 0) {
|
|
if (this.target === "draft-2020-12") {
|
|
result.$defs = defs;
|
|
}
|
|
else {
|
|
result.definitions = defs;
|
|
}
|
|
}
|
|
}
|
|
try {
|
|
// this "finalizes" this schema and ensures all cycles are removed
|
|
// each call to .emit() is functionally independent
|
|
// though the seen map is shared
|
|
return JSON.parse(JSON.stringify(result));
|
|
}
|
|
catch (_err) {
|
|
throw new Error("Error converting schema to JSON.");
|
|
}
|
|
}
|
|
}
|
|
export function toJSONSchema(input, _params) {
|
|
if (input instanceof $ZodRegistry) {
|
|
const gen = new JSONSchemaGenerator(_params);
|
|
const defs = {};
|
|
for (const entry of input._idmap.entries()) {
|
|
const [_, schema] = entry;
|
|
gen.process(schema);
|
|
}
|
|
const schemas = {};
|
|
const external = {
|
|
registry: input,
|
|
uri: _params?.uri,
|
|
defs,
|
|
};
|
|
for (const entry of input._idmap.entries()) {
|
|
const [key, schema] = entry;
|
|
schemas[key] = gen.emit(schema, {
|
|
..._params,
|
|
external,
|
|
});
|
|
}
|
|
if (Object.keys(defs).length > 0) {
|
|
const defsSegment = gen.target === "draft-2020-12" ? "$defs" : "definitions";
|
|
schemas.__shared = {
|
|
[defsSegment]: defs,
|
|
};
|
|
}
|
|
return { schemas };
|
|
}
|
|
const gen = new JSONSchemaGenerator(_params);
|
|
gen.process(input);
|
|
return gen.emit(input, _params);
|
|
}
|
|
function isTransforming(_schema, _ctx) {
|
|
const ctx = _ctx ?? { seen: new Set() };
|
|
if (ctx.seen.has(_schema))
|
|
return false;
|
|
ctx.seen.add(_schema);
|
|
const schema = _schema;
|
|
const def = schema._zod.def;
|
|
switch (def.type) {
|
|
case "string":
|
|
case "number":
|
|
case "bigint":
|
|
case "boolean":
|
|
case "date":
|
|
case "symbol":
|
|
case "undefined":
|
|
case "null":
|
|
case "any":
|
|
case "unknown":
|
|
case "never":
|
|
case "void":
|
|
case "literal":
|
|
case "enum":
|
|
case "nan":
|
|
case "file":
|
|
case "template_literal":
|
|
return false;
|
|
case "array": {
|
|
return isTransforming(def.element, ctx);
|
|
}
|
|
case "object": {
|
|
for (const key in def.shape) {
|
|
if (isTransforming(def.shape[key], ctx))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
case "union": {
|
|
for (const option of def.options) {
|
|
if (isTransforming(option, ctx))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
case "intersection": {
|
|
return isTransforming(def.left, ctx) || isTransforming(def.right, ctx);
|
|
}
|
|
case "tuple": {
|
|
for (const item of def.items) {
|
|
if (isTransforming(item, ctx))
|
|
return true;
|
|
}
|
|
if (def.rest && isTransforming(def.rest, ctx))
|
|
return true;
|
|
return false;
|
|
}
|
|
case "record": {
|
|
return isTransforming(def.keyType, ctx) || isTransforming(def.valueType, ctx);
|
|
}
|
|
case "map": {
|
|
return isTransforming(def.keyType, ctx) || isTransforming(def.valueType, ctx);
|
|
}
|
|
case "set": {
|
|
return isTransforming(def.valueType, ctx);
|
|
}
|
|
// inner types
|
|
case "promise":
|
|
case "optional":
|
|
case "nonoptional":
|
|
case "nullable":
|
|
case "readonly":
|
|
return isTransforming(def.innerType, ctx);
|
|
case "lazy":
|
|
return isTransforming(def.getter(), ctx);
|
|
case "default": {
|
|
return isTransforming(def.innerType, ctx);
|
|
}
|
|
case "prefault": {
|
|
return isTransforming(def.innerType, ctx);
|
|
}
|
|
case "custom": {
|
|
return false;
|
|
}
|
|
case "transform": {
|
|
return true;
|
|
}
|
|
case "pipe": {
|
|
return isTransforming(def.in, ctx) || isTransforming(def.out, ctx);
|
|
}
|
|
case "success": {
|
|
return false;
|
|
}
|
|
case "catch": {
|
|
return false;
|
|
}
|
|
default:
|
|
def;
|
|
}
|
|
throw new Error(`Unknown schema type: ${def.type}`);
|
|
}
|