npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

reduce-configs

v1.0.0

Published

Merge an initial configuration object with one or more configuration objects, functions, or arrays of configuration objects/functions.

Downloads

185,023

Readme

reduce-configs

Merge an initial configuration object with one or more configuration objects, functions, or arrays of configuration objects/functions.

Install

npm add reduce-configs -D

reduceConfigs

The reduceConfigs function merges one or more configuration objects into a final configuration. It also allows modification of the configuration object via functions.

  • Type:
type OneOrMany<T> = T | T[];
type ConfigChain<T> = OneOrMany<T | ((config: T) => T | void)>;

function reduceConfigs<T>(options: {
  /**
   * Initial configuration object.
   */
  initial: T;
  /**
   * The configuration object, function, or array of configuration objects/functions
   * to be merged into the initial configuration
   */
  config?: ConfigChain<T> | undefined;
  /**
   * The function used to merge configuration objects.
   * @default Object.assign
   */
  mergeFn?: typeof Object.assign;
}): T;
  • Example:
import { reduceConfigs } from "@rsbuild/core";

const initial = { a: 1, b: 2 };

// Merging an object
const finalConfig1 = reduceConfigs({
  initial: initial,
  config: { b: 3, c: 4 },
});
// -> { a: 1, b: 3, c: 4 }

// Using a function to modify the config
const finalConfig2 = reduceConfigs({
  initial: initial,
  config: (config) => ({ ...config, b: 5, d: 6 }),
});
// -> { a: 1, b: 5, d: 6 }

// Merging an array of objects/functions
const finalConfig3 = reduceConfigs({
  initial: initial,
  config: [
    { b: 7 },
    (config) => ({ ...config, c: 8 }),
    (config) => ({ ...config, d: 9 }),
  ],
});
// -> { a: 1, b: 7, c: 8, d: 9 }

reduceConfigsWithContext

The reduceConfigsWithContext function is similar to reduceConfigs, which allows you to pass an additional context object to the configuration function.

  • Type:
type OneOrMany<T> = T | T[];
type ConfigChainWithContext<T, Ctx> = OneOrMany<
  T | ((config: T, ctx: Ctx) => T | void)
>;

function reduceConfigsWithContext<T, Ctx>(options: {
  /**
   * Initial configuration object.
   */
  initial: T;
  /**
   * The configuration object, function, or array of configuration objects/functions
   * to be merged into the initial configuration
   */
  config?: ConfigChain<T> | undefined;
  /**
   * Context object that can be used within the configuration functions.
   */
  ctx?: Ctx;
  /**
   * The function used to merge configuration objects.
   * @default Object.assign
   */
  mergeFn?: typeof Object.assign;
}): T;
  • Example:
import { reduceConfigsWithContext } from "@rsbuild/core";

const initial = { a: 1, b: 2 };
const context = { user: "admin" };

const finalConfig = reduceConfigsWithContext({
  initial,
  config: [
    { b: 3 },
    (config, ctx) => ({ ...config, c: ctx.user === "admin" ? 99 : 4 }),
  ],
  ctx: context,
});
// -> { a: 1, b: 3, c: 99 }

License

MIT.