Function commitNode

packages/core/src/runtime/commit.ts:67–284

(
  prev: RuntimeInstance | null,
  instanceId: InstanceId,
  vnode: VNode,
  ctx: CommitCtx,
  nodePath: string,
)

export { __commitDiag } from "./commit/equality.js";

function commitNode(
  prev: RuntimeInstance | null,
  instanceId: InstanceId,
  vnode: VNode,
  ctx: CommitCtx,
  nodePath: string,
): CommitNodeResult {
  ctx.layoutDepthRef.value += 1;
  const layoutDepth = ctx.layoutDepthRef.value;
  const trackPath = layoutDepth >= LAYOUT_DEPTH_PATH_TRACK_START;
  if (trackPath) ctx.layoutPathTail.push(widgetPathEntry(vnode));
  ctx.prevNodeStack.push(prev);
  try {
    if (
      DEV_MODE &&
      layoutDepth > LAYOUT_DEPTH_WARN_THRESHOLD &&
      !ctx.emittedWarnings.has("layout_depth")
    ) {
      ctx.emittedWarnings.add("layout_depth");
      warnDev(
        `[rezi][commit] layout depth ${String(layoutDepth)} exceeds warning threshold ${String(
          LAYOUT_DEPTH_WARN_THRESHOLD,
        )}. Deep trees may fail near depth ${String(
          MAX_LAYOUT_NESTING_DEPTH,
        )}. Path: ${formatWidgetPath(layoutDepth, ctx.layoutPathTail)}`,
      );
    }
    if (layoutDepth > MAX_LAYOUT_NESTING_DEPTH) {
      return {
        ok: false,
        fatal: {
          code: "ZRUI_INVALID_PROPS",
          detail: `ZRUI_MAX_DEPTH: layout nesting depth ${String(layoutDepth)} exceeds max ${String(
            MAX_LAYOUT_NESTING_DEPTH,
          )}. Path: ${formatWidgetPath(layoutDepth, ctx.layoutPathTail)}`,
        },
      };
    }

    const commitDebug = globalThis as Record<string, unknown> & {
      __commitDebug?: unknown;
      __commitDebugLog?: string[] | undefined;
    };
    if (commitDebug.__commitDebug) {
      const debugLog = commitDebug.__commitDebugLog;
      if (debugLog) {
        debugLog.push(
          `commitNode(${String(instanceId)}, ${vnode.kind}, prev=${prev ? `${prev.vnode.kind}:${String(prev.instanceId)}` : "null"})`,
        );
      }
    }

    if (prev && prev.vnode.kind === vnode.kind && leafVNodeEqual(prev.vnode, vnode)) {
      if (__commitDiag.enabled) {
        const wasDirty = prev.selfDirty;
        __commitDiag.push({
          id: instanceId as number,
          kind: vnode.kind,