NaN instead for null, undefined, and NaN.try {} catch {}: advanced straight to Stage 3throw new Error(''): Stage 1, to explore the space of turning statements into expressions.10n: advanced to Stage 31_000: advanced to Stage 2export * as ns from 'mod': advanced as a "needs consensus PR" to be presented in a further meetings for final approval.export default from 'mod': remains on Stage 1 for refining and further discussions.