Url

15 exports Added in v1.0.0 Source

Constructors

fromString

Added in v1.0.0 Source

Parses a URL string into a URL object, returning an Either type for safe error handling.

Details

This function converts a string into a URL object, enabling safe URL parsing with built-in error handling. If the string is invalid or fails to parse, this function does not throw an error; instead, it wraps the error in a IllegalArgumentException and returns it as the Left value of an Either. The Right value contains the successfully parsed URL.

An optional base parameter can be provided to resolve relative URLs. If specified, the function interprets the input url as relative to this base. This is especially useful when dealing with URLs that might not be fully qualified.

Signature

declare const fromString: (url: string, base?: string | URL) => Either<URL, IllegalArgumentException>

Example

import { Url } from "@effect/platform"
import { Either } from "effect"

// Parse an absolute URL
//
//      ┌─── Either<URL, IllegalArgumentException>
//      ▼
const parsed = Url.fromString("https://example.com/path")

if (Either.isRight(parsed)) {
  console.log("Parsed URL:", parsed.right.toString())
} else {
  console.log("Error:", parsed.left.message)
}
// Output: Parsed URL: https://example.com/path

// Parse a relative URL with a base
const relativeParsed = Url.fromString("/relative-path", "https://example.com")

if (Either.isRight(relativeParsed)) {
  console.log("Parsed relative URL:", relativeParsed.right.toString())
} else {
  console.log("Error:", relativeParsed.left.message)
}
// Output: Parsed relative URL: https://example.com/relative-path

Getters

urlParams

Added in v1.0.0 Source

Retrieves the query parameters from a URL.

Details

This function extracts the query parameters from a URL object and returns them as UrlParams. The resulting structure can be easily manipulated or inspected.

Signature

declare function urlParams(url: URL): UrlParams

Example

import { Url } from "@effect/platform"

const myUrl = new URL("https://example.com?foo=bar")

// Read parameters
const params = Url.urlParams(myUrl)

console.log(params)
// Output: [ [ 'foo', 'bar' ] ]

Modifiers

modifyUrlParams

Added in v1.0.0 Source

Reads, modifies, and updates the query parameters of a URL.

Details

This function provides a functional way to interact with query parameters by reading the current parameters, applying a transformation function, and then writing the updated parameters back to the URL. It returns a new URL object with the modified parameters, ensuring immutability.

Signature

declare const modifyUrlParams: {
  (f: (urlParams: UrlParams) => UrlParams): (url: URL) => URL;
  (url: URL, f: (urlParams: UrlParams) => UrlParams): URL;
}

Example

import { Url, UrlParams } from "@effect/platform"

const myUrl = new URL("https://example.com?foo=bar")

const changedUrl = Url.modifyUrlParams(myUrl, UrlParams.append("key", "value"))

console.log(changedUrl.toString())
// Output: https://example.com/?foo=bar&key=value

mutate

Added in v1.0.0 Source

This function clones the original URL object and applies a callback to the clone, allowing multiple updates at once.

Signature

declare const mutate: {
  (f: (url: URL) => void): (self: URL) => URL;
  (self: URL, f: (url: URL) => void): URL;
}

Example

import { Url } from "@effect/platform"

const myUrl = new URL("https://example.com")

const mutatedUrl = Url.mutate(myUrl, (url) => {
  url.username = "user"
  url.password = "pass"
})

console.log("Mutated:", mutatedUrl.toString())
// Output: Mutated: https://user:pass@example.com/

Setters

setHash

Added in v1.0.0 Source

Updates the hash fragment of the URL.

Signature

declare const setHash: {
  (hash: string): (url: URL) => URL;
  (url: URL, hash: string): URL;
}

setHost

Added in v1.0.0 Source

Updates the host (domain and port) of the URL.

Signature

declare const setHost: {
  (host: string): (url: URL) => URL;
  (url: URL, host: string): URL;
}

setHostname

Added in v1.0.0 Source

Updates the domain of the URL without modifying the port.

Signature

declare const setHostname: {
  (hostname: string): (url: URL) => URL;
  (url: URL, hostname: string): URL;
}

setHref

Added in v1.0.0 Source

Replaces the entire URL string.

Signature

declare const setHref: {
  (href: string): (url: URL) => URL;
  (url: URL, href: string): URL;
}

setPassword

Added in v1.0.0 Source

Updates the password used for authentication.

Signature

declare const setPassword: {
  (password: string | Redacted<string>): (url: URL) => URL;
  (url: URL, password: string | Redacted<string>): URL;
}

setPathname

Added in v1.0.0 Source

Updates the path of the URL.

Signature

declare const setPathname: {
  (pathname: string): (url: URL) => URL;
  (url: URL, pathname: string): URL;
}

setPort

Added in v1.0.0 Source

Updates the port of the URL.

Signature

declare const setPort: {
  (port: string | number): (url: URL) => URL;
  (url: URL, port: string | number): URL;
}

setProtocol

Added in v1.0.0 Source

Updates the protocol (e.g., http, https).

Signature

declare const setProtocol: {
  (protocol: string): (url: URL) => URL;
  (url: URL, protocol: string): URL;
}

setSearch

Added in v1.0.0 Source

Updates the query string of the URL.

Signature

declare const setSearch: {
  (search: string): (url: URL) => URL;
  (url: URL, search: string): URL;
}

setUrlParams

Added in v1.0.0 Source

Updates the query parameters of a URL.

Details

This function allows you to set or replace the query parameters of a URL object using the provided UrlParams. It creates a new URL object with the updated parameters, leaving the original object unchanged.

Signature

declare const setUrlParams: {
  (urlParams: UrlParams): (url: URL) => URL;
  (url: URL, urlParams: UrlParams): URL;
}

Example

import { Url, UrlParams } from "@effect/platform"

const myUrl = new URL("https://example.com?foo=bar")

// Write parameters
const updatedUrl = Url.setUrlParams(
  myUrl,
  UrlParams.fromInput([["key", "value"]])
)

console.log(updatedUrl.toString())
// Output: https://example.com/?key=value

setUsername

Added in v1.0.0 Source

Updates the username used for authentication.

Signature

declare const setUsername: {
  (username: string): (url: URL) => URL;
  (url: URL, username: string): URL;
}