dilswer/dist/esm/json-schema-parser/to-json-schema.mjs

Blazingly fast data validation library with TypeScript integration.

var __defProp = Object.defineProperty;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __publicField = (obj, key, value) => __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);

// src/json-schema-parser/to-json-schema.ts
import { BaseType } from "../data-types/base-type.mjs";
import { Type } from "../data-types/Type.mjs";
import { TypeKindNames } from "../data-types/type-kind-names.mjs";
import { isDefined } from "./is-defined.mjs";
import { NameGenerator } from "../ts-type-generator/name-generator.mjs";
var DataTypeJsonSchemaGenerator = class {
  constructor(options) {
    __publicField(this, "options", options);
    __publicField(this, "incompatibleTypes");
    __publicField(this, "customParser");
    __publicField(this, "definitionNames", /* @__PURE__ */ new Map());
    __publicField(this, "definitions", /* @__PURE__ */ new Map());
    var _a, _b;
    this.incompatibleTypes = (_a = options.incompatibleTypes) != null ? _a : "throw";
    this.customParser = (_b = options.customParser) != null ? _b : {};
  }
  throwIncompatibleTypeError(typeName) {
    throw new Error(
      `Cannot parse type "${typeName}" to JSON Schema. Incompatible types.`
    );
  }
  assignMetadataToSchema(schema, type) {
    const meta = BaseType.getOriginalMetadata(type);
    if (meta.title) schema.title = meta.title;
    if (meta.description) schema.description = meta.description;
    if (meta.format) schema.format = meta.format;
  }
  parsePrimitive(type) {
    var _a, _b, _c;
    let schema = {};
    this.assignMetadataToSchema(schema, type);
    switch (type.simpleType) {
      case "boolean":
        schema.type = "boolean";
        break;
      case "integer":
        schema.type = "integer";
        if (type.options.max != null) {
          schema.maximum = type.options.max;
        }
        if (type.options.min != null) {
          schema.minimum = type.options.min;
        }
        break;
      case "null":
        schema.type = "null";
        break;
      case "number":
        schema.type = "number";
        if (type.options.max != null) {
          schema.maximum = type.options.max;
        }
        if (type.options.min != null) {
          schema.minimum = type.options.min;
        }
        break;
      case "string":
        schema.type = "string";
        if (type.options.max != null) {
          schema.maxLength = type.options.max;
        }
        if (type.options.min != null) {
          schema.minLength = type.options.min;
        }
        break;
      case "stringinteger":
        schema.type = "string";
        schema.pattern = "^-?[0-9]+$";
        break;
      case "stringnumeral":
        schema.type = "string";
        schema.pattern = "^-?[0-9]+(\\.[0-9]+)?$";
        break;
      case "unknown":
        break;
      case "function":
        if (this.customParser.Function) {
          schema = this.customParser.Function(type, this.options);
          break;
        }
        if (this.incompatibleTypes === "throw") {
          this.throwIncompatibleTypeError(type.simpleType);
        }
        if (this.incompatibleTypes === "omit") {
          schema = void 0;
          break;
        }
        (_a = schema.title) != null ? _a : schema.title = "Function";
        break;
      case "symbol":
        if (this.customParser.Symbol) {
          schema = this.customParser.Symbol(type, this.options);
          break;
        }
        if (this.incompatibleTypes === "throw") {
          this.throwIncompatibleTypeError(type.simpleType);
        }
        if (this.incompatibleTypes === "omit") {
          schema = void 0;
          break;
        }
        (_b = schema.title) != null ? _b : schema.title = "Symbol";
        break;
      case "undefined":
        if (this.customParser.Undefined) {
          schema = this.customParser.Undefined(type, this.options);
          break;
        }
        if (this.incompatibleTypes === "throw") {
          this.throwIncompatibleTypeError(type.simpleType);
        }
        if (this.incompatibleTypes === "omit") {
          schema = void 0;
          break;
        }
        (_c = schema.title) != null ? _c : schema.title = "undefined";
        break;
    }
    return schema;
  }
  parseArrayOf(type, children) {
    const schema = {
      type: "array",
      items: children == null ? void 0 : children.filter(isDefined)
    };
    this.assignMetadataToSchema(schema, type);
    return schema;
  }
  parseTuple(type, children) {
    var _a;
    const items = (_a = children == null ? void 0 : children.map((c) => c != null ? c : {})) != null ? _a : [];
    const schema = {
      type: "array",
      items,
      required: items.map((_, i) => i.toString()),
      minItems: items.length,
      maxItems: items.length
    };
    this.assignMetadataToSchema(schema, type);
    return schema;
  }
  parseRecordOf(type, children = []) {
    const schema = {
      type: "object",
      properties: {},
      required: []
    };
    this.assignMetadataToSchema(schema, type);
    for (let i = 0; i < children.length; i++) {
      const { child, propertyName, required } = children[i];
      if (child == null) continue;
      Object.assign(schema.properties, { [propertyName]: child });
      if (required) {
        schema.required.push(propertyName);
      }
    }
    if (typeof this.options.additionalProperties === "boolean") {
      schema.additionalProperties = this.options.additionalProperties;
    }
    return schema;
  }
  parseDict(type, children) {
    const schema = {
      type: "object",
      additionalProperties: {
        anyOf: children == null ? void 0 : children.filter(isDefined)
      }
    };
    this.assignMetadataToSchema(schema, type);
    return schema;
  }
  parseSetOf(type, children = []) {
    if (this.customParser.Set) {
      return this.customParser.Set(
        children.filter(isDefined),
        type,
        this.options
      );
    }
    if (this.incompatibleTypes === "throw") {
      this.throwIncompatibleTypeError("Set");
    }
    if (this.incompatibleTypes === "omit") return void 0;
    const schema = {
      title: "Set"
    };
    this.assignMetadataToSchema(schema, type);
    return schema;
  }
  parseOneOf(type, children) {
    const schema = {
      anyOf: children.filter(isDefined)
    };
    this.assignMetadataToSchema(schema, type);
    return schema;
  }
  parseAllOf(type, children) {
    const schema = {
      allOf: children.filter(isDefined)
    };
    this.assignMetadataToSchema(schema, type);
    return schema;
  }
  parseLiteral(type) {
    const schema = {};
    this.assignMetadataToSchema(schema, type);
    if (typeof type.literal === "string") {
      schema.type = "string";
      schema.enum = [type.literal];
      return schema;
    }
    if (typeof type.literal === "number") {
      schema.type = "number";
      schema.enum = [type.literal];
      return schema;
    }
    if (typeof type.literal === "boolean") {
      schema.type = "boolean";
      schema.enum = [type.literal];
      return schema;
    }
    throw new Error(
      "Invalid literal type, literals can be only of string, number or boolean type."
    );
  }
  parseEnum(type) {
    const members = Object.entries(type.enumInstance);
    const schema = {
      anyOf: []
    };
    for (const [key, member] of members) {
      const subSchema = this.parseEnumMember(
        Type.EnumMember(member)
      );
      subSchema.title = key;
      schema.anyOf.push(subSchema);
    }
    this.assignMetadataToSchema(schema, type);
    return schema;
  }
  parseEnumMember(type) {
    const schema = {};
    this.assignMetadataToSchema(schema, type);
    if (typeof type.enumMember === "string") {
      schema.type = "string";
      schema.enum = [type.enumMember];
      return schema;
    }
    if (typeof type.enumMember === "number") {
      schema.type = "number";
      schema.enum = [type.enumMember];
      return schema;
    }
    throw new Error(
      "Invalid enum member type, enum members can be only of string or number type."
    );
  }
  parseInstanceOf(type) {
    if (this.customParser.InstanceOf) {
      return this.customParser.InstanceOf(type, this.options);
    }
    const constructor = type.instanceOf;
    const schema = {
      type: "object",
      title: constructor.name
    };
    this.assignMetadataToSchema(schema, type);
    return schema;
  }
  parseCustom(type) {
    if (this.customParser.Custom) {
      return this.customParser.Custom(type.custom, type, this.options);
    }
    if (this.incompatibleTypes === "throw") {
      this.throwIncompatibleTypeError("Custom Validator");
    }
    if (this.incompatibleTypes === "omit") return void 0;
    const schema = {
      title: `Custom Validator (${type.custom.name || "anonymous"})`
    };
    this.assignMetadataToSchema(schema, type);
    return schema;
  }
  parseStringMatching(type) {
    const schema = {
      type: "string",
      pattern: type.pattern.source
    };
    if (type.pattern.flags) {
      Object.assign(schema, { patternFlags: type.pattern.flags });
    }
    this.assignMetadataToSchema(schema, type);
    return schema;
  }
  parseCircular(circular, children) {
    const [childSchema] = children;
    const child = circular.type;
    if (this.definitionNames.has(child)) {
      const definitionName = this.definitionNames.get(child);
      this.definitions.set(definitionName, childSchema != null ? childSchema : { type: "null" });
      return {
        allOf: [
          {
            $ref: `#/definitions/${definitionName}`
          }
        ]
      };
    }
    return childSchema;
  }
  parseCircularRef(type) {
    var _a;
    const referencedType = type._getReferencedType();
    if (this.definitionNames.has(referencedType)) {
      return {
        $ref: `#/definitions/${this.definitionNames.get(referencedType)}`
      };
    }
    const metadata = BaseType.getOriginalMetadata(referencedType);
    const title = metadata.title;
    if (title) {
      const typeName2 = NameGenerator.generate(title);
      this.definitionNames.set(referencedType, typeName2);
      return {
        $ref: `#/definitions/${typeName2}`
      };
    }
    const typeName = NameGenerator.generate(
      (_a = TypeKindNames.get(referencedType.kind)) != null ? _a : "Circular"
    );
    this.definitionNames.set(referencedType, typeName);
    return {
      $ref: `#/definitions/${typeName}`
    };
  }
  visit(type, children) {
    switch (type.kind) {
      case "simple":
        return this.parsePrimitive(type);
      case "array":
        return this.parseArrayOf(type, children);
      case "tuple":
        return this.parseTuple(type, children);
      case "record":
        return this.parseRecordOf(type, children);
      case "dictionary":
        return this.parseDict(type, children);
      case "set":
        return this.parseSetOf(type, children);
      case "union":
        return this.parseOneOf(type, children);
      case "intersection":
        return this.parseAllOf(type, children);
      case "literal":
        return this.parseLiteral(type);
      case "enumUnion":
        return this.parseEnum(type);
      case "enumMember":
        return this.parseEnumMember(type);
      case "instanceOf":
        return this.parseInstanceOf(type);
      case "custom":
        return this.parseCustom(type);
      case "stringMatching":
        return this.parseStringMatching(type);
      case "circular":
        return this.parseCircular(type, children);
      case "circularRef":
        return this.parseCircularRef(type);
    }
  }
};
var toJsonSchema = (type, options = {}, include$schemaProperty = true) => {
  try {
    const visitor = new DataTypeJsonSchemaGenerator(options);
    const schema = type._acceptVisitor(visitor);
    if (schema && visitor.definitions.size > 0) {
      schema.definitions = Object.fromEntries(visitor.definitions.entries());
    }
    if (include$schemaProperty && schema) {
      schema.$schema = "http://json-schema.org/draft-06/schema#";
    }
    return schema;
  } finally {
    NameGenerator.clear();
  }
};
export {
  toJsonSchema
};