[8.19] Remove --no-experimental-require-module from node.options (#256379)#260150
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patrykkopycinski merged 2 commits intoelastic:8.19from Apr 6, 2026
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…6379) Removes the `--no-experimental-require-module` flag from `config/node.options`. The `require(esm)` feature has been **enabled by default since Node.js v22.12.0** (December 2024) and has been the default behavior across 10+ LTS patch releases. On Node 22.22.0 (our current version per `.nvmrc`), this opt-out flag is no longer necessary. - The flag was added when `require(esm)` was still behind `--experimental-require-module` and considered unstable. - Since v22.12.0, the feature is enabled by default — `--no-experimental-require-module` actively **disables** it. - ~95% of ESM-only npm packages work with `require(esm)`. The only limitation is modules with top-level `await` (which throw `ERR_REQUIRE_ASYNC_MODULE`). Low — this restores the Node.js default behavior that has been shipping for over a year in LTS releases. Any ESM-related issues would have been surfaced across the broader Node ecosystem by now. - [ ] CI passes without the flag (validates no Kibana code depends on the old `ERR_REQUIRE_ESM` behavior) Made with [Cursor](https://cursor.com) <!-- This is an auto-generated comment: release notes by coderabbit.ai --> * **Chores** * Updated build and development scripts to remove an experimental Node.js configuration flag across all npm scripts, including build, start, lint, and test commands. This simplifies the development and build process while maintaining all existing functionality. <!-- end of auto-generated comment: release notes by coderabbit.ai --> (cherry picked from commit 2c390fb)
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szwarckonrad
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Apr 6, 2026
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Summary
Backport of #256379 to 8.19.
Removes
--no-experimental-require-modulefrom:config/node.optionspackage.jsonscripts.buildkite/scripts/steps/test/jest_parallel.shNODE_OPTIONSsrc/cli/kibana/dev.js(replaces the experimental module warning with optional--extended-stack-tracedebug helper)Test plan
yarn kbn bootstrapsucceeds locallyyarn startworks without--no-experimental-require-module🤖 Generated with Claude Code