cookie-cutter

Tiny, dependency-free helper for reading and writing cookies in browsers or any environment that exposes a document-style interface.

Table of Contents

• Features
• Release Highlights (0.3.x)
• Installation
• Quick Start
• API Reference
• Cookie Options
• Examples
• TypeScript
• Testing
• Contributing
• Project Origins & Credits
• License

Features

• Zero runtime dependencies and ES5-friendly source so it bundles cleanly with legacy toolchains.
• Works in browsers, Browserify-style bundles, and Node.js when you provide a document stub.
• Built-in TypeScript declarations with the same API shape as the JavaScript module.
• Partitioned CHIPS attribute support plus SameSite guardrails to keep you aligned with current browser requirements.

Release Highlights (0.3.x)

• Adds the partitioned attribute so cookies can opt into CHIPS while matching Mozilla’s Set-Cookie guidance.
• Warns when SameSite: "None" is paired without secure: true and provides cookie.configure({ suppressInsecureSameSiteNoneWarning: true }) to silence the warning in local HTTP setups.
• Introduces a top-level cookie.clear helper (including TypeScript declarations) and guarantees deletes force Max-Age=0.
• Extends serialization to cover HttpOnly, Max-Age, and SameSite attributes so emitted cookies reflect modern browser expectations.

Installation

npm install @boiseitguru/cookie-cutter

Quick Start

// CommonJS
var cookie = require("@boiseitguru/cookie-cutter");

var visits = parseInt(cookie.get("visits"), 10) || 0;
cookie.set("visits", visits + 1, { path: "/" });

// ES Modules (modern bundlers)
import cookie from "@boiseitguru/cookie-cutter";

const visits = Number(cookie.get("visits") || 0) + 1;
cookie.set("visits", String(visits), { path: "/" });

API Reference

cookie(document?: Document | string)

Creates a cookie controller bound to the supplied document or cookie string. If no argument is given, an empty cookie jar is created. When you import/require the module in a browser, the default export is already bound to the global document, so you can call cookie.get, cookie.set, and cookie.clear directly as shown in the Quick Start.

cookie.get(key: string): string | undefined

Returns the value stored for key, or undefined if the cookie is not set.

cookie.set(key: string, value: string, options?: CookieOptions): string

Serializes key=value with any supplied cookie attributes, assigns it to document.cookie, and returns the serialized string. When options.SameSite === "None" and options.secure is not true, a warning is printed to console.warn to anticipate upcoming enforcement. Setting options.partitioned === true appends the Partitioned attribute.

cookie.clear(key: string, options?: CookieOptions): string

Clears the cookie for key by delegating to set with an expiry in the past and Max-Age = 0. Pass the same options you used when setting the cookie (such as path or domain) so the browser targets the correct cookie.

cookie.configure(options: CookieConfig): void

Adjusts global defaults for future cookie operations, such as silencing SameSite warnings during local development.

type CookieConfig = {
  suppressInsecureSameSiteNoneWarning?: boolean;
};

• suppressInsecureSameSiteNoneWarning: When true, disables the warning emitted by cookie.set for SameSite: "None" cookies missing the secure flag. Useful for non-production development over HTTP.

Cookie Options

Option	Type	Description
expires	Date	Sets the cookie expiry date.
path	string	Restricts the cookie to a particular path.
domain	string	Restricts the cookie to a particular domain.
secure	boolean	Marks the cookie as secure-only. Required by browsers when SameSite is "None".
HttpOnly	boolean	Adds the HttpOnly attribute.
MaxAge	number	Sets the cookie lifetime (in seconds) via Max-Age.
SameSite	"Strict" | "Lax" | "None"	Controls cross-site cookie behavior.
partitioned	boolean	Appends the Partitioned attribute for CHIPS storage (requires secure: true in supporting browsers).

Examples

Partitioned SameSite=None Cookie

var cookie = require("@boiseitguru/cookie-cutter");
var api = cookie(document);

api.set("session", "abc123", {
  secure: true,
  SameSite: "None",
  partitioned: true
});

This combination satisfies current Mozilla Set-Cookie expectations for partitioned cookies.

Suppressing Warnings During Local Development

var cookie = require("@boiseitguru/cookie-cutter");

cookie.configure({ suppressInsecureSameSiteNoneWarning: true });
var api = cookie({ cookie: "" });

api.set("token", "dev-only", { SameSite: "None" });

TypeScript

Type definitions ship with the package. Import the module using either default or CommonJS syntax and enjoy auto-complete for cookie options, including partitioned and SameSite.

import cookie = require("@boiseitguru/cookie-cutter");

const api = cookie();
api.set("theme", "dark", { SameSite: "Lax", MaxAge: 300 });

Testing

Run the Tape test suite:

npm test

Contributing

• Keep the ES5 coding style: two-space indentation, var declarations, double-quoted strings, and explicit semicolons.
• Update TypeScript declarations whenever the runtime API changes.
• Add focused tests alongside functional changes so behavior stays locked down.

Project Origins & Credits

This repository preserves the original cookie-cutter module by James Halliday (substack) to ensure ongoing availability, with TypeScript support and modern cookie attribute updates maintained here.

License

MIT. See the LICENSE file for details.