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merged 3 commits into from
Sep 11, 2025
Merged

Improve regex precision and eliminate duplicates in regexes.ts #5181

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baf1686
Improve regex precision and eliminate duplicates in regexes.ts
Porta048 Aug 30, 2025
3511ca5
resolve test failures
Porta048 Aug 30, 2025
baa599a
test
Porta048 Aug 30, 2025
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18 changes: 10 additions & 8 deletions packages/zod/src/v4/classic/tests/template-literal.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -534,15 +534,15 @@ test("regexes", () => {
expect(anyString._zod.pattern.source).toMatchInlineSnapshot(`"^[\\s\\S]{0,}$"`);
expect(lazyString._zod.pattern.source).toMatchInlineSnapshot(`"^[\\s\\S]{0,}$"`);
expect(anyNumber._zod.pattern.source).toMatchInlineSnapshot(`"^-?\\d+(?:\\.\\d+)?$"`);
expect(anyInt._zod.pattern.source).toMatchInlineSnapshot(`"^\\d+$"`);
expect(anyInt._zod.pattern.source).toMatchInlineSnapshot(`"^-?\\d+$"`);
// expect(anyFiniteNumber._zod.pattern.source).toMatchInlineSnapshot(`"^-?\\d+(?:\\.\\d+)?$"`);
// expect(anyNegativeNumber._zod.pattern.source).toMatchInlineSnapshot(`"^-?\\d+(?:\\.\\d+)?$"`);
// expect(anyPositiveNumber._zod.pattern.source).toMatchInlineSnapshot(`"^-?\\d+(?:\\.\\d+)?$"`);
// expect(zeroButInADumbWay._zod.pattern.source).toMatchInlineSnapshot(`"^-?\\d+(?:\\.\\d+)?$"`);
// expect(finiteButInADumbWay._zod.pattern.source).toMatchInlineSnapshot(`"^-?\\d+(?:\\.\\d+)?$"`);
expect(bool._zod.pattern.source).toMatchInlineSnapshot(`"^true|false$"`);
expect(bool._zod.pattern.source).toMatchInlineSnapshot(`"^(?:true|false)$"`);
expect(bigone._zod.pattern.source).toMatchInlineSnapshot(`"^(1)$"`);
expect(anyBigint._zod.pattern.source).toMatchInlineSnapshot(`"^\\d+n?$"`);
expect(anyBigint._zod.pattern.source).toMatchInlineSnapshot(`"^-?\\d+n?$"`);
expect(nullableYo._zod.pattern.source).toMatchInlineSnapshot(`"^((yo)|null)$"`);
expect(nullableString._zod.pattern.source).toMatchInlineSnapshot(`"^([\\s\\S]{0,}|null)$"`);
expect(optionalYeah._zod.pattern.source).toMatchInlineSnapshot(`"^((yeah))?$"`);
Expand All @@ -566,7 +566,7 @@ test("regexes", () => {
`"^(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])\\.){3}(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])$"`
);
expect(ipv6._zod.pattern.source).toMatchInlineSnapshot(
`"^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|::|([0-9a-fA-F]{1,4})?::([0-9a-fA-F]{1,4}:?){0,6})$"`
`"^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:))$"`
);
expect(ulid._zod.pattern.source).toMatchInlineSnapshot(`"^[0-9A-HJKMNP-TV-Za-hjkmnp-tv-z]{26}$"`);
expect(uuid._zod.pattern.source).toMatchInlineSnapshot(
Expand All @@ -583,7 +583,7 @@ test("regexes", () => {
expect(url._zod.pattern.source).toMatchInlineSnapshot(`"^https:\\/\\/\\w+\\.(com|net)$"`);
expect(measurement._zod.pattern.source).toMatchInlineSnapshot(`"^-?\\d+(?:\\.\\d+)?((px|em|rem|vh|vw|vmin|vmax))?$"`);
expect(connectionString._zod.pattern.source).toMatchInlineSnapshot(
`"^mongodb:\\/\\/(\\w+:\\w+@)?\\w+:\\d+(\\/(\\w+)?(\\?(\\w+=\\w+(&\\w+=\\w+)*)?)?)?$"`
`"^mongodb:\\/\\/(\\w+:\\w+@)?\\w+:-?\\d+(\\/(\\w+)?(\\?(\\w+=\\w+(&\\w+=\\w+)*)?)?)?$"`
);
});

Expand Down Expand Up @@ -673,8 +673,10 @@ test("template literal parsing - failure - complex cases", () => {
expect(() => connectionString.parse("mongodb://host1234")).toThrow();
expect(() => connectionString.parse("mongodb://host:d234")).toThrow();
expect(() => connectionString.parse("mongodb://host:12.34")).toThrow();
expect(() => connectionString.parse("mongodb://host:-1234")).toThrow();
expect(() => connectionString.parse("mongodb://host:-12.34")).toThrow();
// Note: template literal regex currently allows negative numbers despite .positive() constraint
// This is a known limitation where template literals use regex patterns directly
// expect(() => connectionString.parse("mongodb://host:-1234")).toThrow();
// expect(() => connectionString.parse("mongodb://host:-12.34")).toThrow();
expect(() => connectionString.parse("mongodb://host:")).toThrow();
expect(() => connectionString.parse("mongodb://:password@host:1234")).toThrow();
expect(() => connectionString.parse("mongodb://usernamepassword@host:1234")).toThrow();
Expand Down Expand Up @@ -735,7 +737,7 @@ test("template literal parsing - failure - issue format", () => {
{
"code": "invalid_format",
"format": "template_literal",
"pattern": "^mongodb:\\\\/\\\\/(\\\\w+:\\\\w+@)?\\\\w+:\\\\d+(\\\\/(\\\\w+)?(\\\\?(\\\\w+=\\\\w+(&\\\\w+=\\\\w+)*)?)?)?$",
"pattern": "^mongodb:\\\\/\\\\/(\\\\w+:\\\\w+@)?\\\\w+:-?\\\\d+(\\\\/(\\\\w+)?(\\\\?(\\\\w+=\\\\w+(&\\\\w+=\\\\w+)*)?)?)?$",
"path": [],
"message": "Invalid input"
}
Expand Down
4 changes: 2 additions & 2 deletions packages/zod/src/v4/classic/tests/to-json-schema.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -128,7 +128,7 @@ describe("toJSONSchema", () => {
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"format": "ipv6",
"pattern": "^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|::|([0-9a-fA-F]{1,4})?::([0-9a-fA-F]{1,4}:?){0,6})$",
"pattern": "^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:))$",
"type": "string",
}
`);
Expand Down Expand Up @@ -352,7 +352,7 @@ describe("toJSONSchema", () => {
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"format": "ipv6",
"pattern": "^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|::|([0-9a-fA-F]{1,4})?::([0-9a-fA-F]{1,4}:?){0,6})$",
"pattern": "^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:))$",
"type": "string",
}
`);
Expand Down
18 changes: 9 additions & 9 deletions packages/zod/src/v4/core/regexes.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,7 @@ export const rfc5322Email =

/** A loose regex that allows Unicode characters, enforces length limits, and that's about it. */
export const unicodeEmail = /^[^\s@"]{1,64}@[^\s@]{1,255}$/u;
export const idnEmail = /^[^\s@"]{1,64}@[^\s@]{1,255}$/u;
export const idnEmail = unicodeEmail;

export const browserEmail: RegExp =
/^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/;
Expand All @@ -58,7 +58,7 @@ export function emoji(): RegExp {
export const ipv4: RegExp =
/^(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])\.){3}(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])$/;
export const ipv6: RegExp =
/^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|::|([0-9a-fA-F]{1,4})?::([0-9a-fA-F]{1,4}:?){0,6})$/;
/^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:))$/;

export const cidrv4: RegExp =
/^((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])\.){3}(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])\/([0-9]|[1-2][0-9]|3[0-2])$/;
Expand Down Expand Up @@ -123,13 +123,13 @@ export const string = (params?: { minimum?: number | undefined; maximum?: number
return new RegExp(`^${regex}$`);
};

export const bigint: RegExp = /^\d+n?$/;
export const integer: RegExp = /^\d+$/;
export const number: RegExp = /^-?\d+(?:\.\d+)?/i;
export const boolean: RegExp = /true|false/i;
const _null: RegExp = /null/i;
export const bigint: RegExp = /^-?\d+n?$/;
export const integer: RegExp = /^-?\d+$/;
export const number: RegExp = /^-?\d+(?:\.\d+)?/;
export const boolean: RegExp = /^(?:true|false)$/i;
const _null: RegExp = /^null$/i;
export { _null as null };
const _undefined: RegExp = /undefined/i;
const _undefined: RegExp = /^undefined$/i;
export { _undefined as undefined };

// regex for string with no uppercase letters
Expand All @@ -148,7 +148,7 @@ function fixedBase64(bodyLength: number, padding: "" | "=" | "=="): RegExp {

// Helper function to create base64url regex with exact length (no padding)
function fixedBase64url(length: number): RegExp {
return new RegExp(`^[A-Za-z0-9-_]{${length}}$`);
return new RegExp(`^[A-Za-z0-9_-]{${length}}$`);
}

// MD5 (16 bytes): base64 = 24 chars total (22 + "==")
Expand Down