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component-recycler.js
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component-recycler.js
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import { Component } from '../component';
/**
* Retains a pool of Components for re-use.
* @type {Component[]}
* @private
*/
export const recyclerComponents = [];
/**
* Create a component. Normalizes differences between PFC's and classful
* Components.
* @param {function} Ctor The constructor of the component to create
* @param {object} props The initial props of the component
* @param {object} context The initial context of the component
* @returns {import('../component').Component}
*/
export function createComponent(Ctor, props, context) {
let inst, i = recyclerComponents.length;
if (Ctor.prototype && Ctor.prototype.render) {
inst = new Ctor(props, context);
Component.call(inst, props, context);
}
else {
inst = new Component(props, context);
inst.constructor = Ctor;
inst.render = doRender;
}
while (i--) {
if (recyclerComponents[i].constructor===Ctor) {
inst.nextBase = recyclerComponents[i].nextBase;
recyclerComponents.splice(i, 1);
return inst;
}
}
return inst;
}
/** The `.render()` method for a PFC backing instance. */
function doRender(props, state, context) {
return this.constructor(props, context);
}