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typescript-json-schema.ts
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typescript-json-schema.ts
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import * as glob from "glob";
import * as stringify from "json-stable-stringify";
import * as path from "path";
import { createHash } from "crypto";
import * as ts from "typescript";
export { Program, CompilerOptions, Symbol } from "typescript";
const vm = require("vm");
const REGEX_FILE_NAME_OR_SPACE = /(\bimport\(".*?"\)|".*?")\.| /g;
const REGEX_TSCONFIG_NAME = /^.*\.json$/;
const REGEX_TJS_JSDOC = /^-([\w]+)\s+(\S|\S[\s\S]*\S)\s*$/g;
export function getDefaultArgs(): Args {
return {
ref: true,
aliasRef: false,
topRef: false,
titles: false,
defaultProps: false,
noExtraProps: false,
propOrder: false,
typeOfKeyword: false,
required: false,
strictNullChecks: false,
ignoreErrors: false,
out: "",
validationKeywords: [],
include: [],
excludePrivate: false,
uniqueNames: false,
rejectDateType: false,
id: "",
};
}
export type ValidationKeywords = {
[prop: string]: boolean
};
export type Args = {
ref: boolean;
aliasRef: boolean;
topRef: boolean;
titles: boolean;
defaultProps: boolean;
noExtraProps: boolean;
propOrder: boolean;
typeOfKeyword: boolean;
required: boolean;
strictNullChecks: boolean;
ignoreErrors: boolean;
out: string;
validationKeywords: string[];
include: string[];
excludePrivate: boolean;
uniqueNames: boolean;
rejectDateType: boolean;
id: string;
};
export type PartialArgs = Partial<Args>;
export type PrimitiveType = number | boolean | string | null;
export type Definition = {
$ref?: string,
$schema?: string,
$id?: string,
description?: string,
allOf?: Definition[],
oneOf?: Definition[],
anyOf?: Definition[],
title?: string,
type?: string | string[],
definitions?: {[key: string]: any},
format?: string,
items?: Definition | Definition[],
minItems?: number,
additionalItems?: {
anyOf: Definition[]
} | Definition,
enum?: PrimitiveType[] | Definition[],
default?: PrimitiveType | Object,
additionalProperties?: Definition | boolean,
required?: string[],
propertyOrder?: string[],
properties?: {[key: string]: any},
defaultProperties?: string[],
typeof?: "function"
};
export type SymbolRef = {
name: string;
typeName: string;
fullyQualifiedName: string;
symbol: ts.Symbol;
};
function extend(target: any, ..._: any[]) {
if (target == null) { // TypeError if undefined or null
throw new TypeError("Cannot convert undefined or null to object");
}
const to = Object(target);
for (var index = 1; index < arguments.length; index++) {
const nextSource = arguments[index];
if (nextSource != null) { // Skip over if undefined or null
for (const nextKey in nextSource) {
// Avoid bugs when hasOwnProperty is shadowed
if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
to[nextKey] = nextSource[nextKey];
}
}
}
}
return to;
}
function unique(arr: string[]): string[] {
const temp = {};
for (const e of arr) {
temp[e] = true;
}
const r: string[] = [];
for (const k in temp) {
// Avoid bugs when hasOwnProperty is shadowed
if (Object.prototype.hasOwnProperty.call(temp, k)) {
r.push(k);
}
}
return r;
}
/**
* Try to parse a value and returns the string if it fails.
*/
function parseValue(value: string) {
try {
return JSON.parse(value);
} catch (error) {
return value;
}
}
function extractLiteralValue(typ: ts.Type): PrimitiveType | undefined {
let str = (<ts.LiteralType>typ).value;
if (str === undefined) {
str = (typ as any).text;
}
if (typ.flags & ts.TypeFlags.StringLiteral) {
return str;
} else if (typ.flags & ts.TypeFlags.BooleanLiteral) {
return (typ as any).intrinsicName === "true";
} else if (typ.flags & ts.TypeFlags.EnumLiteral) {
// or .text for old TS
const num = parseFloat(str as string);
return isNaN(num) ? str : num;
} else if (typ.flags & ts.TypeFlags.NumberLiteral) {
return parseFloat(str as string);
}
return undefined;
}
/**
* Checks whether a type is a tuple type.
*/
function resolveTupleType(propertyType: ts.Type): ts.TupleTypeNode|null {
if (!propertyType.getSymbol() && (propertyType.getFlags() & ts.TypeFlags.Object && (<ts.ObjectType>propertyType).objectFlags & ts.ObjectFlags.Reference)) {
return (propertyType as ts.TypeReference).target as any;
}
if (!(propertyType.getFlags() & ts.TypeFlags.Object && (<ts.ObjectType>propertyType).objectFlags & ts.ObjectFlags.Tuple)) {
return null;
}
return propertyType as any;
}
const simpleTypesAllowedProperties = {
type: true,
description: true
};
function addSimpleType(def: Definition, type: string) {
for (const k in def) {
if (!simpleTypesAllowedProperties[k]) {
return false;
}
}
if (!def.type) {
def.type = type;
} else if (typeof def.type !== "string") {
if (!(<Object[]>def.type).every((val) => { return typeof val === "string"; })) {
return false;
}
if (def.type.indexOf("null") === -1) {
def.type.push("null");
}
} else {
if (typeof def.type !== "string") {
return false;
}
if (def.type !== "null") {
def.type = [ def.type, "null" ];
}
}
return true;
}
function makeNullable(def: Definition) {
if (!addSimpleType(def, "null")) {
const union = def.oneOf || def.anyOf;
if (union) {
union.push({ type: "null" });
} else {
const subdef = {};
for (var k in def) {
if (def.hasOwnProperty(k)) {
subdef[k] = def[k];
delete def[k];
}
}
def.anyOf = [ subdef, { type: "null" } ];
}
}
return def;
}
/**
* JSDoc keywords that should be used to annotate the JSON schema.
*
* Many of these validation keywords are defined here: http://json-schema.org/latest/json-schema-validation.html
*/
const validationKeywords = {
multipleOf: true, // 6.1.
maximum: true, // 6.2.
exclusiveMaximum: true, // 6.3.
minimum: true, // 6.4.
exclusiveMinimum: true, // 6.5.
maxLength: true, // 6.6.
minLength: true, // 6.7.
pattern: true, // 6.8.
// items: true, // 6.9.
// additionalItems: true, // 6.10.
maxItems: true, // 6.11.
minItems: true, // 6.12.
uniqueItems: true, // 6.13.
// contains: true, // 6.14.
maxProperties: true, // 6.15.
minProperties: true, // 6.16.
// required: true, // 6.17. This is not required. It is auto-generated.
// properties: true, // 6.18. This is not required. It is auto-generated.
// patternProperties: true, // 6.19.
additionalProperties: true, // 6.20.
// dependencies: true, // 6.21.
// propertyNames: true, // 6.22.
enum: true, // 6.23.
// const: true, // 6.24.
type: true, // 6.25.
// allOf: true, // 6.26.
// anyOf: true, // 6.27.
// oneOf: true, // 6.28.
// not: true, // 6.29.
ignore: true,
description: true,
format: true,
default: true,
$ref: true,
id: true
};
export class JsonSchemaGenerator {
private tc: ts.TypeChecker;
/**
* Holds all symbols within a custom SymbolRef object, containing useful
* information.
*/
private symbols: SymbolRef[];
/**
* All types for declarations of classes, interfaces, enums, and type aliases
* defined in all TS files.
*/
private allSymbols: { [name: string]: ts.Type };
/**
* All symbols for declarations of classes, interfaces, enums, and type aliases
* defined in non-default-lib TS files.
*/
private userSymbols: { [name: string]: ts.Symbol };
/**
* Maps from the names of base types to the names of the types that inherit from
* them.
*/
private inheritingTypes: { [baseName: string]: string[] };
private reffedDefinitions: { [key: string]: Definition } = {};
/**
* This is a set of all the user-defined validation keywords.
*/
private userValidationKeywords: ValidationKeywords;
/**
* Types are assigned names which are looked up by their IDs. This is the
* map from type IDs to type names.
*/
private typeNamesById: { [id: number]: string } = {};
/**
* Whenever a type is assigned its name, its entry in this dictionary is set,
* so that we don't give the same name to two separate types.
*/
private typeNamesUsed: { [name: string]: boolean } = {};
constructor(
symbols: SymbolRef[],
allSymbols: { [name: string]: ts.Type },
userSymbols: { [name: string]: ts.Symbol },
inheritingTypes: { [baseName: string]: string[] },
tc: ts.TypeChecker,
private args = getDefaultArgs(),
) {
this.symbols = symbols;
this.allSymbols = allSymbols;
this.userSymbols = userSymbols;
this.inheritingTypes = inheritingTypes;
this.tc = tc;
this.userValidationKeywords = args.validationKeywords.reduce(
(acc, word) => ({ ...acc, [word]: true }),
{}
);
}
public get ReffedDefinitions(): { [key: string]: Definition } {
return this.reffedDefinitions;
}
/**
* Parse the comments of a symbol into the definition and other annotations.
*/
private parseCommentsIntoDefinition(symbol: ts.Symbol, definition: {description?: string}, otherAnnotations: {}): void {
if (!symbol) {
return;
}
// the comments for a symbol
const comments = symbol.getDocumentationComment(this.tc);
if (comments.length) {
definition.description = comments.map(comment => comment.kind === "lineBreak" ? comment.text : comment.text.trim().replace(/\r\n/g, "\n")).join("");
}
// jsdocs are separate from comments
const jsdocs = symbol.getJsDocTags();
jsdocs.forEach(doc => {
// if we have @TJS-... annotations, we have to parse them
const [name, text] = (doc.name === "TJS" ? new RegExp(REGEX_TJS_JSDOC).exec(doc.text!)!.slice(1,3) : [doc.name, doc.text]) as string[];
if (validationKeywords[name] || this.userValidationKeywords[name]) {
definition[name] = text === undefined ? "" : parseValue(text);
} else {
// special annotations
otherAnnotations[doc.name] = true;
}
});
}
private getDefinitionForRootType(propertyType: ts.Type, reffedType: ts.Symbol, definition: Definition) {
const tupleType = resolveTupleType(propertyType);
if (tupleType) { // tuple
const elemTypes: ts.NodeArray<ts.TypeNode> = tupleType.elementTypes || (propertyType as any).typeArguments;
const fixedTypes = elemTypes.map(elType => this.getTypeDefinition(elType as any));
definition.type = "array";
definition.items = fixedTypes;
const targetTupleType = (propertyType as ts.TupleTypeReference).target;
definition.minItems = targetTupleType.minLength;
if (targetTupleType.hasRestElement) {
definition.additionalItems = fixedTypes[fixedTypes.length - 1];
fixedTypes.splice(fixedTypes.length - 1, 1);
} else {
definition.additionalItems = {
anyOf: fixedTypes
};
}
} else {
const propertyTypeString = this.tc.typeToString(propertyType, undefined, ts.TypeFormatFlags.UseFullyQualifiedType);
const flags = propertyType.flags;
const arrayType = this.tc.getIndexTypeOfType(propertyType, ts.IndexKind.Number);
if (flags & ts.TypeFlags.String) {
definition.type = "string";
} else if (flags & ts.TypeFlags.Number) {
const isInteger = (definition.type === "integer" || (reffedType && reffedType.getName() === "integer"));
definition.type = isInteger ? "integer" : "number";
} else if (flags & ts.TypeFlags.Boolean) {
definition.type = "boolean";
} else if (flags & ts.TypeFlags.Null) {
definition.type = "null";
} else if (flags & ts.TypeFlags.Undefined) {
definition.type = "undefined";
} else if (flags & ts.TypeFlags.Any) {
// no type restriction, so that anything will match
} else if (propertyTypeString === "Date" && !this.args.rejectDateType) {
definition.type = "string";
definition.format = "date-time";
} else if (propertyTypeString === "object") {
definition.type = "object";
definition.properties = {};
definition.additionalProperties = true;
} else {
const value = extractLiteralValue(propertyType);
if (value !== undefined) {
definition.type = typeof value;
definition.enum = [ value ];
} else if (arrayType !== undefined) {
definition.type = "array";
definition.items = this.getTypeDefinition(arrayType);
} else {
// Report that type could not be processed
const error = new TypeError("Unsupported type: " + propertyTypeString);
(error as any).type = propertyType;
throw error;
// definition = this.getTypeDefinition(propertyType, tc);
}
}
}
return definition;
}
private getReferencedTypeSymbol(prop: ts.Symbol): ts.Symbol|undefined {
const decl = prop.getDeclarations();
if (decl && decl.length) {
const type = (<ts.TypeReferenceNode> (<any> decl[0]).type);
if (type && (type.kind & ts.SyntaxKind.TypeReference) && type.typeName) {
const symbol = this.tc.getSymbolAtLocation(type.typeName);
if (symbol && (symbol.flags & ts.SymbolFlags.Alias)) {
return this.tc.getAliasedSymbol(symbol);
}
return symbol;
}
}
return undefined;
}
private getDefinitionForProperty(prop: ts.Symbol, node: ts.Node) {
if (prop.flags & ts.SymbolFlags.Method) {
return null;
}
const propertyName = prop.getName();
const propertyType = this.tc.getTypeOfSymbolAtLocation(prop, node);
const reffedType = this.getReferencedTypeSymbol(prop);
const definition = this.getTypeDefinition(propertyType, undefined, undefined, prop, reffedType);
if (this.args.titles) {
definition.title = propertyName;
}
if (definition.hasOwnProperty("ignore")) {
return null;
}
// try to get default value
const valDecl = prop.valueDeclaration as ts.VariableDeclaration;
if (valDecl && valDecl.initializer) {
let initial = valDecl.initializer;
while (ts.isTypeAssertion(initial)) {
initial = initial.expression;
}
if ((<any>initial).expression) { // node
console.warn("initializer is expression for property " + propertyName);
} else if ((<any>initial).kind && (<any>initial).kind === ts.SyntaxKind.NoSubstitutionTemplateLiteral) {
definition.default = initial.getText();
} else {
try {
const sandbox = { sandboxvar: null as any };
vm.runInNewContext("sandboxvar=" + initial.getText(), sandbox);
const val = sandbox.sandboxvar;
if (val === null || typeof val === "string" || typeof val === "number" || typeof val === "boolean" || Object.prototype.toString.call(val) === "[object Array]") {
definition.default = val;
} else if (val) {
console.warn("unknown initializer for property " + propertyName + ": " + val);
}
} catch (e) {
console.warn("exception evaluating initializer for property " + propertyName);
}
}
}
return definition;
}
private getEnumDefinition(clazzType: ts.Type, definition: Definition): Definition {
const node = clazzType.getSymbol()!.getDeclarations()![0];
const fullName = this.tc.typeToString(clazzType, undefined, ts.TypeFormatFlags.UseFullyQualifiedType);
const members: ts.NodeArray<ts.EnumMember> = node.kind === ts.SyntaxKind.EnumDeclaration ?
(node as ts.EnumDeclaration).members :
ts.createNodeArray([node as ts.EnumMember]);
var enumValues: (number|boolean|string|null)[] = [];
const enumTypes: string[] = [];
const addType = (type: string) => {
if (enumTypes.indexOf(type) === -1) {
enumTypes.push(type);
}
};
members.forEach(member => {
const caseLabel = (<ts.Identifier>member.name).text;
const constantValue = this.tc.getConstantValue(member);
if (constantValue !== undefined) {
enumValues.push(constantValue);
addType(typeof constantValue);
} else {
// try to extract the enums value; it will probably by a cast expression
const initial: ts.Expression|undefined = member.initializer;
if (initial) {
if ((<any>initial).expression) { // node
const exp = (<any>initial).expression;
const text = (<any>exp).text;
// if it is an expression with a text literal, chances are it is the enum convension:
// CASELABEL = 'literal' as any
if (text) {
enumValues.push(text);
addType("string");
} else if (exp.kind === ts.SyntaxKind.TrueKeyword || exp.kind === ts.SyntaxKind.FalseKeyword) {
enumValues.push((exp.kind === ts.SyntaxKind.TrueKeyword));
addType("boolean");
} else {
console.warn("initializer is expression for enum: " + fullName + "." + caseLabel);
}
} else if (initial.kind === ts.SyntaxKind.NoSubstitutionTemplateLiteral) {
enumValues.push(initial.getText());
addType("string");
} else if (initial.kind === ts.SyntaxKind.NullKeyword) {
enumValues.push(null);
addType("null");
}
}
}
});
if (enumTypes.length) {
definition.type = (enumTypes.length === 1) ? enumTypes[0] : enumTypes;
}
if (enumValues.length > 0) {
definition.enum = enumValues.sort();
}
return definition;
}
private getUnionDefinition(unionType: ts.UnionType, prop: ts.Symbol, unionModifier: string, definition: Definition) {
const enumValues: PrimitiveType[] = [];
const simpleTypes: string[] = [];
const schemas: Definition[] = [];
const pushSimpleType = (type: string) => {
if (simpleTypes.indexOf(type) === -1) {
simpleTypes.push(type);
}
};
const pushEnumValue = (val: PrimitiveType) => {
if (enumValues.indexOf(val) === -1) {
enumValues.push(val);
}
};
for (const valueType of unionType.types) {
const value = extractLiteralValue(valueType);
if (value !== undefined) {
pushEnumValue(value);
} else {
const def = this.getTypeDefinition(valueType);
if (def.type === "undefined") {
if (prop) {
(<any>prop).mayBeUndefined = true;
}
} else {
const keys = Object.keys(def);
if (keys.length === 1 && keys[0] === "type") {
if (typeof def.type !== "string") {
console.error("Expected only a simple type.");
} else {
pushSimpleType(def.type);
}
} else {
schemas.push(def);
}
}
}
}
if (enumValues.length > 0) {
// If the values are true and false, just add "boolean" as simple type
const isOnlyBooleans = enumValues.length === 2 &&
typeof enumValues[0] === "boolean" &&
typeof enumValues[1] === "boolean" &&
enumValues[0] !== enumValues[1];
if (isOnlyBooleans) {
pushSimpleType("boolean");
} else {
const enumSchema: Definition = { enum: enumValues.sort() };
// If all values are of the same primitive type, add a "type" field to the schema
if (enumValues.every((x) => { return typeof x === "string"; })) {
enumSchema.type = "string";
} else if (enumValues.every((x) => { return typeof x === "number"; })) {
enumSchema.type = "number";
} else if (enumValues.every((x) => { return typeof x === "boolean"; })) {
enumSchema.type = "boolean";
}
schemas.push(enumSchema);
}
}
if (simpleTypes.length > 0) {
schemas.push({ type: simpleTypes.length === 1 ? simpleTypes[0] : simpleTypes });
}
if (schemas.length === 1) {
for (const k in schemas[0]) {
if (schemas[0].hasOwnProperty(k)) {
definition[k] = schemas[0][k];
}
}
} else {
definition[unionModifier] = schemas;
}
return definition;
}
private getIntersectionDefinition(intersectionType: ts.IntersectionType, definition: Definition) {
const simpleTypes: string[] = [];
const schemas: Definition[] = [];
const pushSimpleType = (type: string) => {
if (simpleTypes.indexOf(type) === -1) {
simpleTypes.push(type);
}
};
for (const intersectionMember of intersectionType.types) {
const def = this.getTypeDefinition(intersectionMember);
if (def.type === "undefined") {
console.error("Undefined in intersection makes no sense.");
} else {
const keys = Object.keys(def);
if (keys.length === 1 && keys[0] === "type") {
if (typeof def.type !== "string") {
console.error("Expected only a simple type.");
} else {
pushSimpleType(def.type);
}
} else {
schemas.push(def);
}
}
}
if (simpleTypes.length > 0) {
schemas.push({ type: simpleTypes.length === 1 ? simpleTypes[0] : simpleTypes });
}
if (schemas.length === 1) {
for (const k in schemas[0]) {
if (schemas[0].hasOwnProperty(k)) {
definition[k] = schemas[0][k];
}
}
} else {
definition.allOf = schemas;
}
return definition;
}
private getClassDefinition(clazzType: ts.Type, definition: Definition): Definition {
const node = clazzType.getSymbol()!.getDeclarations()![0];
if (this.args.typeOfKeyword && node.kind === ts.SyntaxKind.FunctionType) {
definition.typeof = "function";
return definition;
}
const clazz = <ts.ClassDeclaration>node;
const props = this.tc.getPropertiesOfType(clazzType).filter(prop => {
if (!this.args.excludePrivate) {
return true;
}
const decls = prop.declarations;
return !(decls && decls.filter(decl => {
const mods = decl.modifiers;
return mods && mods.filter(mod => mod.kind === ts.SyntaxKind.PrivateKeyword).length > 0;
}).length > 0);
});
const fullName = this.tc.typeToString(clazzType, undefined, ts.TypeFormatFlags.UseFullyQualifiedType);
const modifierFlags = ts.getCombinedModifierFlags(node);
if (modifierFlags & ts.ModifierFlags.Abstract) {
const oneOf = this.inheritingTypes[fullName].map((typename) => {
return this.getTypeDefinition(this.allSymbols[typename]);
});
definition.oneOf = oneOf;
} else {
if (clazz.members) {
const indexSignatures = clazz.members == null ? [] : clazz.members.filter(x => x.kind === ts.SyntaxKind.IndexSignature);
if (indexSignatures.length === 1) {
// for case "array-types"
const indexSignature = indexSignatures[0] as ts.IndexSignatureDeclaration;
if (indexSignature.parameters.length !== 1) {
throw new Error("Not supported: IndexSignatureDeclaration parameters.length != 1");
}
const indexSymbol: ts.Symbol = (<any>indexSignature.parameters[0]).symbol;
const indexType = this.tc.getTypeOfSymbolAtLocation(indexSymbol, node);
const isStringIndexed = (indexType.flags === ts.TypeFlags.String);
if (indexType.flags !== ts.TypeFlags.Number && !isStringIndexed) {
throw new Error("Not supported: IndexSignatureDeclaration with index symbol other than a number or a string");
}
const typ = this.tc.getTypeAtLocation(indexSignature.type!);
const def = this.getTypeDefinition(typ, undefined, "anyOf");
if (isStringIndexed) {
definition.type = "object";
definition.additionalProperties = def;
} else {
definition.type = "array";
definition.items = def;
}
}
}
const propertyDefinitions = props.reduce((all, prop) => {
const propertyName = prop.getName();
const propDef = this.getDefinitionForProperty(prop, node);
if (propDef != null) {
all[propertyName] = propDef;
}
return all;
}, {});
if (definition.type === undefined) {
definition.type = "object";
}
if (definition.type === "object" && Object.keys(propertyDefinitions).length > 0) {
definition.properties = propertyDefinitions;
}
if (this.args.defaultProps) {
definition.defaultProperties = [];
}
if (this.args.noExtraProps && definition.additionalProperties === undefined) {
definition.additionalProperties = false;
}
if (this.args.propOrder) {
// propertyOrder is non-standard, but useful:
// https://github.com/json-schema/json-schema/issues/87
const propertyOrder = props.reduce((order: string[], prop: ts.Symbol) => {
order.push(prop.getName());
return order;
}, []);
definition.propertyOrder = propertyOrder;
}
if (this.args.required) {
const requiredProps = props.reduce((required: string[], prop: ts.Symbol) => {
const def = {};
this.parseCommentsIntoDefinition(prop, def, {});
if (!(prop.flags & ts.SymbolFlags.Optional) && !(prop.flags & ts.SymbolFlags.Method) && !(<any>prop).mayBeUndefined && !def.hasOwnProperty("ignore")) {
required.push(prop.getName());
}
return required;
}, []);
if (requiredProps.length > 0) {
definition.required = unique(requiredProps).sort();
}
}
}
return definition;
}
/**
* Gets/generates a globally unique type name for the given type
*/
private getTypeName(typ: ts.Type) {
const id = (typ as any).id as number;
if (this.typeNamesById[id]) { // Name already assigned?
return this.typeNamesById[id];
}
const baseName = this.tc.typeToString(typ, undefined, ts.TypeFormatFlags.NoTruncation | ts.TypeFormatFlags.UseFullyQualifiedType).replace(REGEX_FILE_NAME_OR_SPACE, "");
let name = baseName;
if (this.typeNamesUsed[name]) { // If a type with same name exists
for (let i = 1; true; ++i) { // Try appending "_1", "_2", etc.
name = baseName + "_" + i;
if (!this.typeNamesUsed[name]) {
break;
}
}
}
this.typeNamesById[id] = name;
this.typeNamesUsed[name] = true;
return name;
}
private getTypeDefinition(typ: ts.Type, asRef = this.args.ref, unionModifier: string = "anyOf", prop?: ts.Symbol, reffedType?: ts.Symbol, pairedSymbol?: ts.Symbol): Definition {
const definition: Definition = {}; // real definition
// Ignore any number of Readonly and Mutable type wrappings, since they only add and remove readonly modifiers on fields and JSON Schema is not concerned with mutability
while (typ.aliasSymbol && (typ.aliasSymbol.escapedName === "Readonly" || typ.aliasSymbol.escapedName === "Mutable") && typ.aliasTypeArguments && typ.aliasTypeArguments[0]) {
typ = typ.aliasTypeArguments[0];
reffedType = undefined;
}
if (this.args.typeOfKeyword && (typ.flags & ts.TypeFlags.Object) && ((<ts.ObjectType>typ).objectFlags & ts.ObjectFlags.Anonymous)) {
definition.typeof = "function";
return definition;
}
let returnedDefinition = definition; // returned definition, may be a $ref
const symbol = typ.getSymbol();
// FIXME: We can't just compare the name of the symbol - it ignores the namespace
const isRawType = (!symbol || symbol.name === "Date" || symbol.name === "integer" || this.tc.getIndexInfoOfType(typ, ts.IndexKind.Number) !== undefined);
// special case: an union where all child are string literals -> make an enum instead
let isStringEnum = false;
if (typ.flags & ts.TypeFlags.Union) {
const unionType = <ts.UnionType>typ;
isStringEnum = (unionType.types.every(propType => {
return (propType.getFlags() & ts.TypeFlags.StringLiteral) !== 0;
}));
}
// aliased types must be handled slightly different
const asTypeAliasRef = asRef && reffedType && (this.args.aliasRef || isStringEnum);
if (!asTypeAliasRef) {
if (isRawType || typ.getFlags() & ts.TypeFlags.Object && (<ts.ObjectType>typ).objectFlags & ts.ObjectFlags.Anonymous) {
asRef = false; // raw types and inline types cannot be reffed,
// unless we are handling a type alias
}
}
let fullTypeName = "";
if (asTypeAliasRef) {
fullTypeName = this.tc.getFullyQualifiedName(
reffedType!.getFlags() & ts.SymbolFlags.Alias ?
this.tc.getAliasedSymbol(reffedType!) :
reffedType!
).replace(REGEX_FILE_NAME_OR_SPACE, "");
} else if (asRef) {
fullTypeName = this.getTypeName(typ);
}
if (asRef) {
// We don't return the full definition, but we put it into
// reffedDefinitions below.
returnedDefinition = {
$ref: `${this.args.id}#/definitions/` + fullTypeName
};
}
// Parse comments
const otherAnnotations = {};
this.parseCommentsIntoDefinition(reffedType!, definition, otherAnnotations); // handle comments in the type alias declaration
if (prop) {
this.parseCommentsIntoDefinition(prop, returnedDefinition, otherAnnotations);
}
this.parseCommentsIntoDefinition(symbol!, definition, otherAnnotations);
// Create the actual definition only if is an inline definition, or
// if it will be a $ref and it is not yet created
if (!asRef || !this.reffedDefinitions[fullTypeName]) {
if (asRef) { // must be here to prevent recursivity problems
let reffedDefinition: Definition;
if (asTypeAliasRef && reffedType!.getFlags() & (ts.TypeFlags.IndexedAccess | ts.TypeFlags.Index | ts.TypeFlags.Intersection) && symbol) {
reffedDefinition = this.getTypeDefinition(typ, true, undefined, symbol, symbol);
} else {
reffedDefinition = definition;
}
this.reffedDefinitions[fullTypeName] = reffedDefinition;
if (this.args.titles && fullTypeName) {
definition.title = fullTypeName;
}
}
const node = symbol && symbol.getDeclarations() !== undefined ? symbol.getDeclarations()![0] : null;
if (definition.type === undefined) { // if users override the type, do not try to infer it
if (typ.flags & ts.TypeFlags.Union) {
this.getUnionDefinition(typ as ts.UnionType, prop!, unionModifier, definition);
} else if (typ.flags & ts.TypeFlags.Intersection) {
if (this.args.noExtraProps) {
// extend object instead of using allOf because allOf does not work well with additional properties. See #107
if (this.args.noExtraProps) {
definition.additionalProperties = false;
}
const types = (<ts.IntersectionType> typ).types;
for (const member of types) {
const other = this.getTypeDefinition(member, false);
definition.type = other.type; // should always be object
definition.properties = extend(definition.properties || {}, other.properties);
if (Object.keys(other.default || {}).length > 0) {
definition.default = extend(definition.default || {}, other.default);
}
if (other.required) {
definition.required = unique((definition.required || []).concat(other.required)).sort();
}
}
} else {
this.getIntersectionDefinition(typ as ts.IntersectionType, definition);
}
} else if (isRawType) {
if (pairedSymbol) {
this.parseCommentsIntoDefinition(pairedSymbol, definition, {});
}
this.getDefinitionForRootType(typ, reffedType!, definition);
} else if (node && (node.kind === ts.SyntaxKind.EnumDeclaration || node.kind === ts.SyntaxKind.EnumMember)) {
this.getEnumDefinition(typ, definition);
} else if (symbol && symbol.flags & ts.SymbolFlags.TypeLiteral && symbol.members!.size === 0 && !(node && (node.kind === ts.SyntaxKind.MappedType))) {
// {} is TypeLiteral with no members. Need special case because it doesn't have declarations.
definition.type = "object";
definition.properties = {};
} else {
this.getClassDefinition(typ, definition);
}
}
}
if (otherAnnotations["nullable"]) {
makeNullable(returnedDefinition);
}
return returnedDefinition;
}
public setSchemaOverride(symbolName: string, schema: Definition) {
this.reffedDefinitions[symbolName] = schema;
}
public getSchemaForSymbol(symbolName: string, includeReffedDefinitions: boolean = true): Definition {
if(!this.allSymbols[symbolName]) {
throw new Error(`type ${symbolName} not found`);
}
const def = this.getTypeDefinition(this.allSymbols[symbolName], this.args.topRef, undefined, undefined, undefined, this.userSymbols[symbolName] || undefined);
if (this.args.ref && includeReffedDefinitions && Object.keys(this.reffedDefinitions).length > 0) {
def.definitions = this.reffedDefinitions;
}
def["$schema"] = "http://json-schema.org/draft-07/schema#";
const id = this.args.id;
if(id) {
def["$id"] = this.args.id;
}
return def;
}
public getSchemaForSymbols(symbolNames: string[], includeReffedDefinitions: boolean = true): Definition {
const root = {
$schema: "http://json-schema.org/draft-07/schema#",
definitions: {}
};
const id = this.args.id;
if(id) {
root["$id"] = id;
}
for (const symbolName of symbolNames) {
root.definitions[symbolName] = this.getTypeDefinition(this.allSymbols[symbolName], this.args.topRef, undefined, undefined, undefined, this.userSymbols[symbolName]);
}
if (this.args.ref && includeReffedDefinitions && Object.keys(this.reffedDefinitions).length > 0) {
root.definitions = {...root.definitions, ... this.reffedDefinitions};
}
return root;
}
public getSymbols(name?: string): SymbolRef[] {
if (name === void 0) {