Function allocLFrame

packages/core/src/render3/state.ts:663–668

* Allocates next free LFrame. This function tries to reuse the `LFrame`s to lower memory pressure.

()

 * Allocates next free LFrame. This function tries to reuse the `LFrame`s to lower memory pressure.
 */
function allocLFrame() {
  const currentLFrame = instructionState.lFrame;
  const childLFrame = currentLFrame === null ? null : currentLFrame.child;
  const newLFrame = childLFrame === null ? createLFrame(currentLFrame) : childLFrame;
  return newLFrame;
}

function createLFrame(parent: LFrame | null): LFrame {
  const lFrame: LFrame = {