routie dev init since i didn't adhere to any proper guidance up until now
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+276
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import { expect, expectTypeOf, test } from "vitest";
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import { z } from "zod/v4";
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test("basic catch", () => {
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expect(z.string().catch("default").parse(undefined)).toBe("default");
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});
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test("catch fn does not run when parsing succeeds", () => {
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let isCalled = false;
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const cb = () => {
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isCalled = true;
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return "asdf";
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};
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expect(z.string().catch(cb).parse("test")).toBe("test");
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expect(isCalled).toEqual(false);
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});
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test("basic catch async", async () => {
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const result = await z.string().catch("default").parseAsync(1243);
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expect(result).toBe("default");
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});
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test("catch replace wrong types", () => {
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expect(z.string().catch("default").parse(true)).toBe("default");
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expect(z.string().catch("default").parse(true)).toBe("default");
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expect(z.string().catch("default").parse(15)).toBe("default");
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expect(z.string().catch("default").parse([])).toBe("default");
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expect(z.string().catch("default").parse(new Map())).toBe("default");
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expect(z.string().catch("default").parse(new Set())).toBe("default");
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expect(z.string().catch("default").parse({})).toBe("default");
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});
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test("catch with transform", () => {
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const stringWithDefault = z
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.string()
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.transform((val) => val.toUpperCase())
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.catch("default");
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expect(stringWithDefault.parse(undefined)).toBe("default");
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expect(stringWithDefault.parse(15)).toBe("default");
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expect(stringWithDefault).toBeInstanceOf(z.ZodCatch);
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expect(stringWithDefault.unwrap()).toBeInstanceOf(z.ZodPipe);
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expect(stringWithDefault.unwrap().in).toBeInstanceOf(z.ZodString);
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expect(stringWithDefault.unwrap().out).toBeInstanceOf(z.ZodTransform);
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type inp = z.input<typeof stringWithDefault>;
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expectTypeOf<inp>().toEqualTypeOf<string>();
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type out = z.output<typeof stringWithDefault>;
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expectTypeOf<out>().toEqualTypeOf<string>();
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});
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test("catch on existing optional", () => {
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const stringWithDefault = z.string().optional().catch("asdf");
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expect(stringWithDefault.parse(undefined)).toBe(undefined);
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expect(stringWithDefault.parse(15)).toBe("asdf");
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expect(stringWithDefault).toBeInstanceOf(z.ZodCatch);
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expect(stringWithDefault.unwrap()).toBeInstanceOf(z.ZodOptional);
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expect(stringWithDefault.unwrap().unwrap()).toBeInstanceOf(z.ZodString);
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type inp = z.input<typeof stringWithDefault>;
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expectTypeOf<inp>().toEqualTypeOf<string | undefined>();
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type out = z.output<typeof stringWithDefault>;
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expectTypeOf<out>().toEqualTypeOf<string | undefined>();
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});
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test("optional on catch", () => {
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const stringWithDefault = z.string().catch("asdf").optional();
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type inp = z.input<typeof stringWithDefault>;
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expectTypeOf<inp>().toEqualTypeOf<string | undefined>();
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type out = z.output<typeof stringWithDefault>;
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expectTypeOf<out>().toEqualTypeOf<string | undefined>();
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});
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test("complex chain example", () => {
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const complex = z
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.string()
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.catch("asdf")
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.transform((val) => `${val}!`)
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.transform((val) => val.toUpperCase())
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.catch("qwer")
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.unwrap()
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.optional()
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.catch("asdfasdf");
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expect(complex.parse("qwer")).toBe("QWER!");
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expect(complex.parse(15)).toBe("ASDF!");
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expect(complex.parse(true)).toBe("ASDF!");
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});
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test("removeCatch", () => {
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const stringWithRemovedDefault = z.string().catch("asdf").unwrap();
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type out = z.output<typeof stringWithRemovedDefault>;
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expectTypeOf<out>().toEqualTypeOf<string>();
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});
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test("nested", () => {
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const inner = z.string().catch("asdf");
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const outer = z.object({ inner }).catch({
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inner: "asdf",
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});
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type input = z.input<typeof outer>;
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expectTypeOf<input>().toEqualTypeOf<{ inner: string }>();
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type out = z.output<typeof outer>;
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expectTypeOf<out>().toEqualTypeOf<{ inner: string }>();
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expect(outer.parse(undefined)).toEqual({ inner: "asdf" });
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expect(outer.parse({})).toEqual({ inner: "asdf" });
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expect(outer.parse({ inner: undefined })).toEqual({ inner: "asdf" });
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});
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test("chained catch", () => {
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const stringWithDefault = z.string().catch("inner").catch("outer");
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const result = stringWithDefault.parse(undefined);
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expect(result).toEqual("inner");
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const resultDiff = stringWithDefault.parse(5);
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expect(resultDiff).toEqual("inner");
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});
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test("native enum", () => {
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enum Fruits {
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apple = "apple",
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orange = "orange",
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}
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const schema = z.object({
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fruit: z.nativeEnum(Fruits).catch(Fruits.apple),
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});
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expect(schema.parse({})).toEqual({ fruit: Fruits.apple });
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expect(schema.parse({ fruit: 15 })).toEqual({ fruit: Fruits.apple });
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});
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test("enum", () => {
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const schema = z.object({
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fruit: z.enum(["apple", "orange"]).catch("apple"),
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});
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expect(schema.parse({})).toEqual({ fruit: "apple" });
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expect(schema.parse({ fruit: true })).toEqual({ fruit: "apple" });
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expect(schema.parse({ fruit: 15 })).toEqual({ fruit: "apple" });
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});
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test("reported issues with nested usage", () => {
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const schema = z.object({
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string: z.string(),
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obj: z.object({
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sub: z.object({
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lit: z.literal("a"),
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subCatch: z.number().catch(23),
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}),
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midCatch: z.number().catch(42),
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}),
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number: z.number().catch(0),
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bool: z.boolean(),
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});
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try {
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schema.parse({
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string: {},
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obj: {
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sub: {
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lit: "b",
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subCatch: "24",
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},
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midCatch: 444,
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},
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number: "",
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bool: "yes",
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});
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} catch (error) {
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const issues = (error as z.ZodError).issues;
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expect(issues.length).toEqual(3);
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expect(issues).toMatchInlineSnapshot(`
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[
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{
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"code": "invalid_type",
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"expected": "string",
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"message": "Invalid input: expected string, received object",
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"path": [
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"string",
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],
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},
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{
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"code": "invalid_value",
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"message": "Invalid input: expected "a"",
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"path": [
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"obj",
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"sub",
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"lit",
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],
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"values": [
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"a",
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],
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},
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{
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"code": "invalid_type",
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"expected": "boolean",
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"message": "Invalid input: expected boolean, received string",
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"path": [
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"bool",
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],
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},
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]
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`);
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// expect(issues[0].message).toMatch("string");
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// expect(issues[1].message).toMatch("literal");
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// expect(issues[2].message).toMatch("boolean");
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}
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});
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test("catch error", () => {
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const schema = z.object({
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age: z.number(),
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name: z.string().catch((ctx) => {
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ctx.issues;
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// issues = ctx.issues;
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return "John Doe";
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}),
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});
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const result = schema.safeParse({
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age: null,
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name: null,
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});
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expect(result.success).toEqual(false);
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expect(result.error!).toMatchInlineSnapshot(`
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[ZodError: [
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{
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"expected": "number",
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"code": "invalid_type",
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"path": [
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"age"
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],
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"message": "Invalid input: expected number, received null"
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}
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]]
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`);
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});
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test("ctx.input", () => {
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const schema = z.string().catch((ctx) => {
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return String(ctx.input);
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});
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expect(schema.parse(123)).toEqual("123");
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});
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test("direction-aware catch", () => {
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const schema = z.string().catch("fallback");
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// Forward direction (regular parse): catch should be applied
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expect(schema.parse(123)).toBe("fallback");
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// Reverse direction (encode): catch should NOT be applied, invalid value should fail validation
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expect(z.safeEncode(schema, 123 as any)).toMatchInlineSnapshot(`
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{
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"error": [ZodError: [
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{
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"expected": "string",
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"code": "invalid_type",
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"path": [],
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"message": "Invalid input: expected string, received number"
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}
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]],
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"success": false,
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}
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`);
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// But valid values should still work in reverse
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expect(z.encode(schema, "world")).toBe("world");
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});
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