Asymptote

See the Big-O as you type.

SHIPPED

A VS Code and Cursor extension that statically analyzes the open file and shows the time and space complexity of every function inline, next to its signature. When it cannot prove a bound, it says O(?) instead of guessing.

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Role: Solo
Type: DEV TOOL
Stack: TypeScript · VS Code API · Static analysis
Timeline: 2026
Platforms: VS Code

The problem

Complexity mistakes hide until review or production. Nothing in the editor says a function just became quadratic.

The solution

Big-O appears inline next to every function as you type, statically. When a bound cannot be proven it says O(?) instead of guessing.

Architecture

VS Code / Cursoreditor

Extension hostTypeScript

Static analyzertime + space bounds

Features

Inline time and space complexity, as ghost text
Honest about uncertainty: O(?) when it cannot prove a bound
Flags suspicious complexity, like an O(n²) sort
Static only. No network, no telemetry

Technologies

TypeScriptVS Code APIStatic analysis