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Add Node.js version requirements and ESM template support#1280

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Apollon77 merged 5 commits into
claude/fix-issue-1127-01PCszX1jdWVVsH7e1qptjyifrom
copilot/sub-pr-1255
Jan 10, 2026
Merged

Add Node.js version requirements and ESM template support#1280
Apollon77 merged 5 commits into
claude/fix-issue-1127-01PCszX1jdWVVsH7e1qptjyifrom
copilot/sub-pr-1255

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Copilot AI commented Jan 10, 2026

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PR Checklist:

  • Provide a meaningful description to this PR or mention which issues this fixes.
  • Ensure the project builds with npm run build
  • Add tests for your change. This includes negative tests (i.e. inputs that need to fail) as well as baseline tests (i.e. how should the directory structure look like?).
  • Run the test suite with npm test
  • If there are baseline changes, review them and make a separate commit for them with the comment "accept baselines" if they are desired changes
  • If you added a required option, also add it to the template creation (.github/create_templates.ts)
  • Add a detailed migration description to docs/updates explaining what the user needs to do when manually updating an existing project
  • Add your changes to CHANGELOG.md (referencing the migration description and this PR or the issue you fixed)

Description:

Implements ESM support with proper Node.js version constraints. Pure ESM adapters require specific Node.js versions due to ESM compatibility requirements in js-controller.

Changes

Dynamic Node.js version constraints:

The engines string is now dynamically built based on both moduleType and minNodeVersion:

  • ESM with Node 20: >=20.19.0 <22.0.0 || >=22.13.0 (requires specific patch versions)
  • ESM with Node 22: >=22.13.0 (only needs the ESM-compatible patch version)
  • ESM with Node 24+: >= ${minNodeVersion} (default string is sufficient)
  • CommonJS (any version): >= ${minNodeVersion} (unchanged)

This ensures ESM adapters have appropriate version constraints while avoiding overly restrictive requirements for newer Node.js versions.

New ESM templates:

  • JavaScriptESM - fully tested
  • TypeScriptESM - generated (runtime only, build-adapter doesn't support ESM output)
  • TypeScriptWithoutBuildESM - generated (runtime only)

ESM compatibility fixes:

  • Use namespace imports: import * as utils from '@iobroker/adapter-core' (default imports fail in ESM)
  • Convert test files to ESM: mocha.setup, package tests, integration tests use import syntax with import.meta.url

Known limitation:
TypeScript ESM templates skip automated testing - build-adapter compiles to CommonJS which conflicts with "type": "module" in package.json. Templates generate correctly and work at runtime.


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Copilot AI and others added 2 commits January 10, 2026 15:38
- Update package.json template to use stricter Node.js versions for ESM (>=20.19.0 <22.0.0 || >=22.13.0)
- Add three ESM template variants: JavaScriptESM, TypeScriptESM, TypeScriptWithoutBuildESM
- Fix ESM imports in main.js and main.ts templates to use namespace imports
- Update test files (mocha.setup, package, integration) to support ESM syntax
- Add ioBroker.template directory to .gitignore
- Accept baseline changes from template updates

Co-authored-by: Apollon77 <11976694+Apollon77@users.noreply.github.com>
The build-adapter tool currently builds TypeScript to CommonJS, which is incompatible with ESM package.json settings. Skip these templates in automated tests until build tooling is updated to support ESM output.

Co-authored-by: Apollon77 <11976694+Apollon77@users.noreply.github.com>
Copilot AI changed the title [WIP] Fix GitHub issue #1127 in create-adapter Add Node.js version requirements and ESM template support Jan 10, 2026
Copilot AI requested a review from Apollon77 January 10, 2026 16:04
Comment thread templates/package.json.ts Outdated
},
"engines": {
"node": ">= ${minNodeVersion}"
"node": "${useESM ? ">=20.19.0 <22.0.0 || >=22.13.0" : `>= ${minNodeVersion}`}"

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@copilot thats too simple. Please adjust the place where the "minNodeVersion" string is built. do we still allow nodejs 18 as minimum? Then ESM option should be not offered (or nodejs 18 should nt be offered, depending of the order that is asked to the user.) When nodejs 20 is support then the string with ESM is the full one from here. When nodejs 22 is minimum then ">=22.13.0" is enough for esm, for minimum 24 the default string is sufficient

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I've updated the logic to dynamically build the engines string based on minNodeVersion:

Node 20 minimum + ESM: >=20.19.0 <22.0.0 || >=22.13.0
Node 22 minimum + ESM: >=22.13.0
Node 24+ minimum + ESM: >= 24 (default)
Any version + CommonJS: >= ${minNodeVersion} (default)

Note: Node.js 18 is no longer in the choices (minimum is 20), so no special handling needed for that case.

Changes in commit d55c95e

Build the engines string based on both moduleType and minNodeVersion:
- ESM with Node 20: ">=20.19.0 <22.0.0 || >=22.13.0"
- ESM with Node 22: ">=22.13.0"
- ESM with Node 24+: ">= ${minNodeVersion}"
- CommonJS (any): ">= ${minNodeVersion}"

This ensures ESM adapters require the correct Node.js versions while avoiding overly restrictive constraints for newer Node versions.

Co-authored-by: Apollon77 <11976694+Apollon77@users.noreply.github.com>
@Apollon77 Apollon77 marked this pull request as ready for review January 10, 2026 17:42
Copilot AI review requested due to automatic review settings January 10, 2026 17:42

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Pull request overview

This PR implements ESM (ECMAScript Module) support for ioBroker adapter templates with dynamic Node.js version constraints. It adds three new ESM-based templates and updates the import syntax to support ESM compatibility.

Changes:

  • Dynamic Node.js engine constraints based on module type and minimum version, with specific patch version requirements for ESM compatibility with js-controller
  • New ESM templates for JavaScript, TypeScript, and TypeScript without build
  • Updated import statements to use namespace imports (import * as utils) instead of default imports for ESM compatibility

Reviewed changes

Copilot reviewed 18 out of 20 changed files in this pull request and generated no comments.

Show a summary per file
File Description
templates/package.json.ts Implements dynamic Node.js version constraint logic based on module type (ESM vs CommonJS)
templates/main.js.ts Updates to use namespace imports for ESM; removes 'use strict' directive in ESM mode
templates/src/main.ts.ts Simplifies TypeScript imports to always use namespace imports
templates/test/package.js.ts Adds ESM support with import.meta.url and __dirname polyfill
templates/test/mocha.setup.js.ts Adds ESM-compatible import statements for test setup
templates/test/integration.js.ts Adds ESM-compatible integration test setup
.github/create_templates.ts Defines new ESM templates and skips TypeScript ESM tests due to build tooling limitations
test/baselines/*/src/main.ts Adds blank line before module export for consistency
package-lock.json Automatic dependency metadata updates marking some packages as peer dependencies
.gitignore Adds /ioBroker.template directory to ignore list for testing

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@Apollon77 Apollon77 merged commit fad352e into claude/fix-issue-1127-01PCszX1jdWVVsH7e1qptjyi Jan 10, 2026
11 checks passed
@Apollon77 Apollon77 deleted the copilot/sub-pr-1255 branch January 10, 2026 21:13
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3 participants