@kentcdodds/codemod-runner

Run codemods over your own saved packages: scan, dry-run with real publish checks and diffs, apply, and revert.

src/dry-run.ts

25 lines · 819 B · TypeScript

import { requireCodemod, runStep, type StepInput } from './step.ts'
import { transformPackage } from './process-package.ts'

/**
 * Transforms your packages in throwaway repo sessions, runs the real
 * publish checks on the transformed trees, and returns per-package diffs —
 * without publishing anything. Also verifies the codemod is idempotent.
 * Run this (and read the diffs) before `apply`. Paged: keep calling with
 * the returned runId + cursor until nextCursor is null.
 */
export default async function dryRun(input: StepInput = {}) {
	requireCodemod(input)
	return await runStep({
		mode: 'dry-run',
		step: input,
		defaults: { limit: 1, max: 2 },
		processPackage: async (run, pkg) =>
			await transformPackage({
				mode: 'dry-run',
				runId: run.id,
				pkg,
				codemod: input.codemod!,
			}),
	})
}