@solid-primitives/props

@solid-primitives/props

Library of primitives focused around component props.

• combineProps - Reactively merges multiple props objects together while smartly combining some of Solid's JSX/DOM attributes.
• createProps - Provides controllable props signals like knobs/controls for simple component testing.

Installation

npm install @solid-primitives/props
# or
yarn add @solid-primitives/props

combineProps

A helper that reactively merges multiple props objects together while smartly combining some of Solid's JSX/HTML attributes.

Event handlers (onClick, onclick, onMouseMove, onSomething), and refs (props.ref) are chained.

class, className, classList and style are combined.

For all other props, the last prop object overrides all previous ones. Similarly to Solid's mergeProps.

How to use it

import { combineProps } from "@solid-primitives/props";

const MyButton: Component<ButtonProps> = props => {
  // primitives of a lot of headless ui libraries will provide props to spread
  const { buttonProps } = createButton();
  // they can be combined with user's props easily
  const combined = combineProps(props, buttonProps);

  return <button {...combined} />;
};

// component consumer can provide button props
// they will be combined with those provided by createButton() primitive
<MyButton style={{ margin: "24px" }} />;

Chaining of event listeners

Every function/tuple property with on___ name get's chained. That could potentially include properties that are not actually event-listeners – such as only or once. Hence you should remove them from the props (with splitProps).

Chained functions will always return void. If you want to get the returned value from a callback, you have to split those props and handle them yourself.

Warning: The types for event-listeners often won't correctly represent the values. Chaining is meant only for DOM Events spreading to an element.

const combined = combineProps(
  {
    onClick: e => {},
    onclick: e => {}
  },
  {
    onClick: [(n, e) => {}, 123]
  }
);
// combined.onClick() will call all 3 of the functions above

For better reference of how exactly combineProps works, see the TESTS

Additional helpers

A couple of lower-lever helpers that power combineProps:

stringStyleToObject

const styles = stringStyleToObject("margin: 24px; border: 1px solid #121212");
styles; // { margin: "24px", border: "1px solid #121212" }

combineStyle

const styles = combineStyle("margin: 24px; border: 1px solid #121212", {
  margin: "2rem",
  padding: "16px"
});
styles; // { margin: "2rem", border: "1px solid #121212", padding: "16px" }

createProps

Primitive that provides controllable props signals like knobs/controls for simple component testing

How to use it

You can either create a single prop:

// Second argument can be initialValue for boolean, number, string:
const [string, setString, stringField] = createControlledProp("stringValue", "test");
// Arrays or enums can be provided in an options object:
const [language, setLanguage, languageField] = createControlledProp(
  "language",
  { initialValue: "en", options: ["de", "en", "fr", "it"] as const }
  // If you want your array to be able to influence the setter/getter types, use `as const`.
);
enum Currency {
  AUD,
  GBP,
  EUR,
  USD,
  CHF,
  JPY,
  CNY
}
const [currency, setCurrency, currencyField] = createControlledProp("currency", {
  initialValue: Currency.USD,
  options: Currency
});

return { languageField(); };

or multiple props in one call:

enum Test { One, Two, Three };
const languages = ['de', 'en', 'fr', 'it'] as const;
const [props, fields] = createControlledProps({
  boolean: true,
  number: 42,
  string: 'text',
  array: { initialValue: 'en', options: languages },
  enum: { initialValue: Test.Three, options: Test }
});

props == {
  boolean: Accessor<boolean>,
  setBoolean: Setter<boolean>,
  number: Accessor<number>,
  setNumber: Setter<number>,
  string: Accessor<string>,
  setString: Setter<string>,
  array: Accessor<string>,
  setArray: Setter<string>,
  enum: Accessor<Test>,
  setEnum: Setter<Test>
};

fields == JSX.Element[];

Demo

TODO

Changelog

Expand Changelog

0.0.100

Initial release

1.0.2

Release initial version with CJS support.

2.0.0 - PR#127

Renamed createProps to createControlledProps, createProp to createControlledProp etc. (for all of the primitives focused on testing)

Added combineProps primitive

2.1.0

Add support for tuple event handlers and de-dupeing to combineProps.