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//// [declarationsWithRecursiveInternalTypesProduceUniqueTypeParams.ts]
// Note that both of the following have an `any` in their return type from where we bottom out the type printout
// for having too many instances of the same symbol nesting.
// Slightly simplified repro from https://github.com/microsoft/TypeScript/issues/30732 so it's easier to read and debug
export type Key<U> = keyof U;
export type Value<K extends Key<U>, U> = U[K];
export const updateIfChanged = <T>(t: T) => {
const reduce = <U>(u: U, update: (u: U) => T) => {
const set = (newU: U) => Object.is(u, newU) ? t : update(newU);
return Object.assign(
<K extends Key<U>>(key: K) =>
reduce<Value<K, U>>(u[key as keyof U] as Value<K, U>, (v: Value<K, U>) => {
return update(Object.assign(Array.isArray(u) ? [] : {}, u, { [key]: v }));
}),
{ map: (updater: (u: U) => U) => set(updater(u)), set });
};
return reduce<T>(t, (t: T) => t);
};
// example from https://github.com/microsoft/TypeScript/issues/31605
export const testRecFun = <T extends Object>(parent: T) => {
return {
result: parent,
deeper: <U extends Object>(child: U) =>
testRecFun<T & U>({ ...parent, ...child })
};
}
let p1 = testRecFun({ one: '1' })
void p1.result.one;
let p2 = p1.deeper({ two: '2' })
void p2.result.one;
void p2.result.two;
let p3 = p2.deeper({ three: '3' })
void p3.result.one;
void p3.result.two;
void p3.result.three;
//// [declarationsWithRecursiveInternalTypesProduceUniqueTypeParams.js]
"use strict";
// Note that both of the following have an `any` in their return type from where we bottom out the type printout
// for having too many instances of the same symbol nesting.
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
exports.__esModule = true;
exports.testRecFun = exports.updateIfChanged = void 0;
var updateIfChanged = function (t) {
var reduce = function (u, update) {
var set = function (newU) { return Object.is(u, newU) ? t : update(newU); };
return Object.assign(function (key) {
return reduce(u[key], function (v) {
var _a;
return update(Object.assign(Array.isArray(u) ? [] : {}, u, (_a = {}, _a[key] = v, _a)));
});
}, { map: function (updater) { return set(updater(u)); }, set: set });
};
return reduce(t, function (t) { return t; });
};
exports.updateIfChanged = updateIfChanged;
// example from https://github.com/microsoft/TypeScript/issues/31605
var testRecFun = function (parent) {
return {
result: parent,
deeper: function (child) {
return (0, exports.testRecFun)(__assign(__assign({}, parent), child));
}
};
};
exports.testRecFun = testRecFun;
var p1 = (0, exports.testRecFun)({ one: '1' });
void p1.result.one;
var p2 = p1.deeper({ two: '2' });
void p2.result.one;
void p2.result.two;
var p3 = p2.deeper({ three: '3' });
void p3.result.one;
void p3.result.two;
void p3.result.three;
//// [declarationsWithRecursiveInternalTypesProduceUniqueTypeParams.d.ts]
export type Key<U> = keyof U;
export type Value<K extends Key<U>, U> = U[K];
export declare const updateIfChanged: <T>(t: T) => (<K extends keyof T>(key: K) => (<K_1 extends keyof Value<K, T>>(key: K_1) => (<K_2 extends keyof Value<K_1, Value<K, T>>>(key: K_2) => (<K_3 extends keyof Value<K_2, Value<K_1, Value<K, T>>>>(key: K_3) => (<K_4 extends keyof Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>(key: K_4) => (<K_5 extends keyof Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>(key: K_5) => (<K_6 extends keyof Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>(key: K_6) => (<K_7 extends keyof Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>(key: K_7) => (<K_8 extends keyof Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>>(key: K_8) => (<K_9 extends keyof Value<K_8, Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>>>(key: K_9) => (<K_10 extends keyof Value<K_9, Value<K_8, Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>>>>(key: K_10) => any & {
map: (updater: (u: Value<K_10, Value<K_9, Value<K_8, Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>>>>) => Value<K_10, Value<K_9, Value<K_8, Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>>>>) => T;
set: (newU: Value<K_10, Value<K_9, Value<K_8, Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>>>>) => T;
}) & {
map: (updater: (u: Value<K_9, Value<K_8, Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>>>) => Value<K_9, Value<K_8, Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>>>) => T;
set: (newU: Value<K_9, Value<K_8, Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>>>) => T;
}) & {
map: (updater: (u: Value<K_8, Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>>) => Value<K_8, Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>>) => T;
set: (newU: Value<K_8, Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>>) => T;
}) & {
map: (updater: (u: Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>) => Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>) => T;
set: (newU: Value<K_7, Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>>) => T;
}) & {
map: (updater: (u: Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>) => Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>) => T;
set: (newU: Value<K_6, Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>>) => T;
}) & {
map: (updater: (u: Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>) => Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>) => T;
set: (newU: Value<K_5, Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>>) => T;
}) & {
map: (updater: (u: Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>) => Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>) => T;
set: (newU: Value<K_4, Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>>) => T;
}) & {
map: (updater: (u: Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>) => Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>) => T;
set: (newU: Value<K_3, Value<K_2, Value<K_1, Value<K, T>>>>) => T;
}) & {
map: (updater: (u: Value<K_2, Value<K_1, Value<K, T>>>) => Value<K_2, Value<K_1, Value<K, T>>>) => T;
set: (newU: Value<K_2, Value<K_1, Value<K, T>>>) => T;
}) & {
map: (updater: (u: Value<K_1, Value<K, T>>) => Value<K_1, Value<K, T>>) => T;
set: (newU: Value<K_1, Value<K, T>>) => T;
}) & {
map: (updater: (u: Value<K, T>) => Value<K, T>) => T;
set: (newU: Value<K, T>) => T;
}) & {
map: (updater: (u: T) => T) => T;
set: (newU: T) => T;
};
export declare const testRecFun: <T extends Object>(parent: T) => {
result: T;
deeper: <U extends Object>(child: U) => {
result: T & U;
deeper: <U_1 extends Object>(child: U_1) => {
result: T & U & U_1;
deeper: <U_2 extends Object>(child: U_2) => {
result: T & U & U_1 & U_2;
deeper: <U_3 extends Object>(child: U_3) => {
result: T & U & U_1 & U_2 & U_3;
deeper: <U_4 extends Object>(child: U_4) => {
result: T & U & U_1 & U_2 & U_3 & U_4;
deeper: <U_5 extends Object>(child: U_5) => {
result: T & U & U_1 & U_2 & U_3 & U_4 & U_5;
deeper: <U_6 extends Object>(child: U_6) => {
result: T & U & U_1 & U_2 & U_3 & U_4 & U_5 & U_6;
deeper: <U_7 extends Object>(child: U_7) => {
result: T & U & U_1 & U_2 & U_3 & U_4 & U_5 & U_6 & U_7;
deeper: <U_8 extends Object>(child: U_8) => {
result: T & U & U_1 & U_2 & U_3 & U_4 & U_5 & U_6 & U_7 & U_8;
deeper: <U_9 extends Object>(child: U_9) => {
result: T & U & U_1 & U_2 & U_3 & U_4 & U_5 & U_6 & U_7 & U_8 & U_9;
deeper: <U_10 extends Object>(child: U_10) => any;
};
};
};
};
};
};
};
};
};
};
};
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