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[READ-ONLY] Mirror of https://github.com/bombshell-dev/playground.
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TypeScript
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231// oxlint-disable bombshell-dev/no-generic-error// oxlint-disable max-paramsimport ReactReconciler from 'react-reconciler';import { DefaultEventPriority, LegacyRoot } from 'react-reconciler/constants.js';import type { ReactNode } from 'react';import type { CreateChildOptions, JsonValue, Node } from '@bomb.sh/freedom';
type Props = Record<string, unknown>;
// A host element with this type owns its freedom node but NOT its children:// the reconciler refuses to reconcile them, leaving the subtree to a foreign// driver (another framework adapter, or an imperative freedom decorator). Grab// the node with a `ref` (getPublicInstance returns it) and drive it yourself.const FOREIGN = 'foreign';
// react-reconciler builds instances detached (createInstance has no parent),// then wires them bottom-up. freedom nodes must be born from a parent, so an// Instance is a lightweight descriptor that holds the shape until its subtree// attaches to a real node — at which point `realize` creates the nodes top-down.interface Instance { type: string; props: Props; node: Node | null; kids: Child[];}
interface TextInstance { text: string; node: Node | null;}
type Child = Instance | TextInstance;
function isText(child: Child): child is TextInstance { return 'text' in child;}
function realize(parent: Node, child: Child, before?: Node): void { const options: CreateChildOptions | undefined = before ? { before } : undefined; if (isText(child)) { const node = parent.createChild('#text', options); node.set('text', child.text); child.node = node; return; } const node = parent.createChild(child.type, options); child.node = node; apply(node, {}, child.props); if (child.type !== FOREIGN) { for (const kid of child.kids) { realize(node, kid); } }}
function apply(node: Node, prev: Props, next: Props): void { for (const key of Object.keys(prev)) { if (key !== 'children' && !(key in next)) { node.unset(key); } } for (const [key, value] of Object.entries(next)) { if (key === 'children' || typeof value === 'function' || value === undefined) { continue; } if (prev[key] !== value) { node.set(key, value as JsonValue); } }}
type Config = ReactReconciler.HostConfig< string, // Type Props, // Props Node, // Container Instance, // Instance TextInstance, // TextInstance never, // SuspenseInstance never, // HydratableInstance Node | null, // PublicInstance null, // HostContext true, // UpdatePayload never, // ChildSet ReturnType<typeof setTimeout>, // TimeoutHandle -1 // NoTimeout>;
const config: Config = { supportsMutation: true, supportsPersistence: false, supportsHydration: false, isPrimaryRenderer: true, noTimeout: -1, scheduleTimeout: setTimeout, cancelTimeout: clearTimeout,
createInstance(type, props) { return { type, props, node: null, kids: [] }; }, createTextInstance(text) { return { text, node: null }; }, appendInitialChild(parent, child) { parent.kids.push(child); }, finalizeInitialChildren() { return false; }, shouldSetTextContent() { return false; }, prepareUpdate() { return true; }, getRootHostContext() { return null; }, getChildHostContext(parent) { return parent; }, getPublicInstance(instance) { return instance.node; }, prepareForCommit() { return null; }, resetAfterCommit() {}, preparePortalMount() {}, getCurrentEventPriority() { return DefaultEventPriority; }, getInstanceFromNode() { return null; }, beforeActiveInstanceBlur() {}, afterActiveInstanceBlur() {}, prepareScopeUpdate() {}, getInstanceFromScope() { return null; }, detachDeletedInstance() {},
appendChild(parent, child) { parent.kids.push(child); if (parent.node && parent.type !== FOREIGN && !child.node) { realize(parent.node, child); } }, appendChildToContainer(container, child) { realize(container, child); }, insertBefore(parent, child, before) { const at = parent.kids.indexOf(child); if (at >= 0) { parent.kids.splice(at, 1); } const mark = parent.kids.indexOf(before); parent.kids.splice(mark < 0 ? parent.kids.length : mark, 0, child); // Fresh insert positions correctly via createChild({ before }). Moving an // already-realized child is not yet supported (needs a same-parent reorder // op in freedom) — see the embedding notes. if (parent.node && parent.type !== FOREIGN && !child.node) { realize(parent.node, child, before.node ?? undefined); } }, insertInContainerBefore(container, child, before) { if (!child.node) { realize(container, child, before.node ?? undefined); } }, removeChild(parent, child) { const at = parent.kids.indexOf(child); if (at >= 0) { parent.kids.splice(at, 1); } void child.node?.remove(); child.node = null; }, removeChildFromContainer(_container, child) { void child.node?.remove(); child.node = null; }, resetTextContent() {}, commitTextUpdate(textInstance, _old, text) { textInstance.node?.set('text', text); }, commitUpdate(instance, _payload, _type, prev, next) { if (instance.node) { apply(instance.node, prev, next); } }, hideInstance(instance) { instance.node?.set('hidden', true); }, hideTextInstance() {}, unhideInstance(instance) { instance.node?.unset('hidden'); }, unhideTextInstance() {}, clearContainer(container) { for (const child of Array.from(container.children)) { void child.remove(); } },};
const reconciler = ReactReconciler(config);
export type Mount = ReturnType<typeof reconciler.createContainer>;
/** * Drive `node`'s children with a React element tree. Uses a legacy * (synchronous) root, so the freedom tree is fully built when `mount` returns. */export function mount(element: ReactNode, node: Node): Mount { const container = reconciler.createContainer( node, LegacyRoot, null, false, null, '', (error) => { throw error; }, null, ); reconciler.updateContainer(element, container, null, null); return container;}