Turn a path string such as `/user/:name` into a regular expression

Resolve a relative path against a root path with validation

Encode a URL to a percent-encoded form, excluding already-encoded sequences

Streaming static file server with Range and conditional-GET support

Logic behind CSRF token creation and verification.

Signed and unsigned cookies based on Keygrip

Express view engine wrapper for Handlebars

A node.js module for parsing multipart-form data requests which supports streams2

parse a url with memoization

Simple middleware-style router