Strictly LIFO
The most recently added callback is always the next callback selected.
Zero dependencies · Node + browser
Newest work goes first.
easy-stack is a small cooperative LIFO runner for priority work, staged requests, and flows where the most recently added task should execute next. It works with bundlers and without a bundler: bundlers resolve the package name normally, while native browser ESM uses an import map with no build or transpilation step.
npm install easy-stack
The execution contract
Small surface. Explicit control.
The v2.1 package keeps the original cooperative model, removes WeakMap overhead, and gives native ESM and CommonJS one shared Node implementation.
Cooperative
Each callback decides when the flow continues by calling this.next().
Synchronous start
With auto-run enabled, the first eligible task begins before add() returns.
Recoverable
A thrown callback error returns the runner to idle without swallowing the error.
Focused documentation
One question per page.
Pick the page that matches the work in front of you. Each route stays short enough to scan and complete.
Choose
Why easy-stack
Match its newest-first contract to the work you actually need to run.
Start hereGuide
Install, import, and run a first cooperative stack.
ContractAPI reference
Methods, state, return values, validation, and errors.
DesignExecution patterns
Priority insertion, pause gates, async hand-offs, and recovery.
WebBrowser use
Native modules, classic scripts, ES5 compatibility, and serving.
PracticeExamples
Adapt focused recipes, then continue in the interactive Playground.
ExperimentPlayground
Edit and run isolated LIFO scenarios directly in the browser.
CompareStack vs queue
Decide whether newest-first or oldest-first fits your workload.
MeasureBenchmarks
Reproduce the version-to-version private-state performance evidence.
Upgradev2 migration
Keep compatibility while adopting modern entry points.
EvidenceTesting
See the vanilla-test suites, coverage gates, package smoke, and CI matrix.
SourceGitHub
Inspect the implementation, report an issue, or contribute.