chore: esm only

[dopry]

Makes @dopry/pecans an ESM-only package. Rebased onto the current next (Phases 1–7: tsup build, Express 5, HTTP route split, ReleaseService pipeline) as a single re-applied commit.

Changes

• package.json: "type": "module", single ESM export map (types + default), drops the require/import conditional exports and the module field.
• tsup: builds esm only → dist/index.js + dist/index.d.ts.
• tsconfig: module/moduleResolution nodenext + verbatimModuleSyntax so typecheck enforces real Node ESM resolution.
• src/ + test/: explicit .js extensions on all relative imports; type-only imports converted to import type / inline type modifiers.
• src/index.ts: replaces the CJS require.main === module entry-point guard with an import.meta.url vs process.argv[1] check, so node dist/index.js (Docker CMD) still starts the server.
• New test test/integration/esm-package.spec.ts: builds dist/ and imports @dopry/pecans by name in a real node subprocess (through the exports map, exactly like a published consumer), and asserts no empty side-effect imports (import {} from ...) are emitted.
• Docs: docs/module.md example switched to import; copilot-instructions updated for the ESM-only build.

BREAKING CHANGE

require('@dopry/pecans') is no longer supported — consumers must import it (Node >= 22.12).

[Copilot]

Pull Request Overview

This PR transitions the project from a dual CommonJS/ESM build setup to ESM-only, representing a breaking change that simplifies the build configuration and modernizes the package structure.

• Removes dual build system and related TypeScript configurations
• Updates package.json to specify "type": "module" and consolidates entry points
• Replaces CommonJS module detection pattern with ESM equivalent using import.meta.url

Reviewed Changes

Copilot reviewed 9 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tsconfig.test.json	Removed test-specific TypeScript configuration
tsconfig.mjs.json	Removed ESM-specific TypeScript configuration
tsconfig.cjs.json	Removed CommonJS-specific TypeScript configuration
src/index.ts	Updated module detection from require.main to import.meta.url pattern
package.json	Set module type to ESM, updated build scripts, and replaced ts-node with tsx
fixup.sh	Removed build script that created dual package.json files
.eslintrc	Minor formatting cleanup and removed mocha environment
.cfignore	Removed Cloud Foundry ignore file
.babelrc	Removed Babel configuration

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[Copilot]

Pull request overview

Copilot reviewed 9 out of 11 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 32 out of 35 changed files in this pull request and generated 6 comments.

[Copilot]

Pull request overview

Copilot reviewed 68 out of 69 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 68 out of 69 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (1)

src/index.ts:77

• pathToFileURL(process.argv[1]) will throw if process.argv[1] is a relative path (common when starting via node dist/index.js). That makes the “run directly” guard crash the process before main() can run.

Normalize process.argv[1] to an absolute file URL before comparing to import.meta.url (or use resolve() + pathToFileURL).

if (
  process.argv[1] &&
  import.meta.url === pathToFileURL(process.argv[1]).href
) {
  main();