Git Risk Analyzer

A VS Code extension that checks your staged and unstaged changes and gives them a risk score (low / medium / high). It helps you catch risky changes before committing.

Four signals are analyzed:

Signal	What it checks
S1 — Critical Path	Are you changing important files?
S2 — Change Surface	How many lines are you changing?
S3 — Fix History	Have these files been fixed a lot recently?
S4 — Test Coverage	Did you change source code without adding tests?

Extending

1. Add a new signal

Create a file in src/signals/ that implements IRiskSignal:

import { IRiskSignal, SignalResult } from './signal.interface';
import { PRFile, RiskConfig } from '../types';

export class MySignal implements IRiskSignal {
  readonly id = 'S5';
  readonly description = 'What this signal checks';

  async compute(files: PRFile[], repoRoot: string, config: RiskConfig): Promise<SignalResult> {
    // your logic here
    return { score: 0, detail: 'Some info' };
  }
}

Then register it in src/riskAnalyzer.ts inside createDefaultSignals():

import { MySignal } from './signals/mySignal.signal';

export function createDefaultSignals(): IRiskSignal[] {
  return [
    new PathScoreSignal(),
    new SurfaceScoreSignal(),
    new FixHistorySignal(),
    new TestCoverageSignal(),
    new MySignal(),        // <-- add it here
  ];
}

2. Add a non-git analyzer

Create a new class that implements IRiskAnalyzer and swap it in:

import { IRiskAnalyzer } from './riskAnalyzer';
import { RiskConfig, RiskResult } from './types';

export class LintAnalyzer implements IRiskAnalyzer {
  async analyze(repoRoot: string, config: RiskConfig): Promise<RiskResult> {
    // get data from a linter, CI, API, etc.
    // compute signals and return a RiskResult
  }
}

Then use it in your extension entry point instead of analyzeRisk().

VSCode Risk Analyzer

Mateo Giraz

Git Risk Analyzer

Extending

1. Add a new signal

2. Add a non-git analyzer