Stable Values With snapshotFn

snapshotFn(callback) captures the current return value of a zero-argument callback and gives you back a new zero-argument function that always returns that captured value.

import { snapshotFn } from "as-test";

const stableClock = snapshotFn((): i64 => currentTime());

When It Helps

• freezing a clock value for a test run
• holding a random-looking value steady
• turning a changing dependency into a deterministic callback

This is not the same feature as snapshot assertions. It is a runtime helper for stabilizing a function result.