perf!: publish ESM-only packages without sourcemaps and test artifacts by nperez0111 · Pull Request #3118 · TypeCellOS/BlockNote

nperez0111 · 2026-09-24T12:46:14Z

First of four PRs replacing #2903. Based directly on origin/main (3a37d23).

Removes CommonJS outputs and exports, stops publishing sourcemaps and test/build artifacts, and narrows the package files lists while retaining necessary assets and CSS. This is the packaging change only; emoji and AI changes follow in separate PRs.

Breaking change: consumers must use ESM imports rather than CommonJS require(). Sourcemaps are no longer published.

Verified: @blocknote/core and @blocknote/react builds. Package versions remain at 0.55.0 from main. Package-size numbers from the original PR have not been reused because this stack was rebuilt on a newer main.

Original work: #2903.

Summary by CodeRabbit

Package Compatibility
- Package entry points now resolve to ES modules. CommonJS require imports are no longer supported.
Package Contents
- Published package contents are more selectively curated, including source files where applicable and excluding tests, fixtures, source maps, and other development artifacts.
- Some stylesheet subpath exports have been removed.
Build Output
- Package builds no longer generate source maps and produce ES module output only.

vercel · 2026-09-24T12:46:20Z

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coderabbitai · 2026-09-24T12:46:32Z

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Reviewing files that changed from the base of the PR and between 52eb1d1 and 759b67e.

Files selected for processing: 18

packages/ariakit/package.json
packages/code-block/package.json
packages/core/package.json
packages/diagram-block/package.json
packages/mantine/package.json
packages/math-block/package.json
packages/react/package.json
packages/server-util/package.json
packages/shadcn/package.json
packages/xl-ai-server/package.json
packages/xl-ai/package.json
packages/xl-docx-exporter/package.json
packages/xl-email-exporter/package.json
packages/xl-multi-column/package.json
packages/xl-odt-exporter/package.json
packages/xl-pdf-exporter/package.json
packages/xl-typst-compiler/package.json
packages/xl-typst-exporter/package.json

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Walkthrough

Build configurations across the listed packages now disable source maps and emit ES modules only. Package metadata updates published-file exclusions and entry points, removing CommonJS require targets. The xl-ai-server package also specifies sideEffects entries.

Changes: ESM-only package distribution

Layer / File(s)	Summary
ES-only build outputs `packages//vite.config.ts`, `packages/core/vite.config.bundled.ts`, `packages//tsconfig.json`, `packages/dev-scripts/tsconfig.json`	Vite library builds now emit ES modules with `.js` filenames and disable source maps. TypeScript source map generation is also disabled. UMD global mappings and CommonJS filename branches are removed.
Package entries and published files `packages/*/package.json`	Package entry points and exports now use ESM targets without `require` conditions. Published-file lists exclude selected CommonJS files, maps, tests, fixtures, and build metadata. The `xl-ai-server` package lists its side-effectful entries explicitly.

Priority: Not assessed

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Other

Possibly related PRs

TypeCellOS/BlockNote#3238: Adds the math-block stylesheet export and changes stylesheet handling. Both PRs update the math-block package export map.

Suggested reviewers: yousefed

Merge Risk: Minimal · up to 6fd4b

No established packaging or runtime issue prevents merging this change.

Pre-merge checks: 4 · 1

Failed checks: 1 inconclusive

Check name	Status	Explanation	Resolution
Description check		The description summarizes the change, the breaking change for CommonJS consumers, and the stacked-PR context. It also states verification steps for `@blocknote/core` and `@blocknote/react`. It does not f…	Restructure the description to follow the repository template. Add these sections: Rationale (why drop CommonJS and sourcemaps, and the size benefit or its absence), Changes (a list of the major package.json, tsconfig.json, and vite.config …

Passed checks: 4 passed

Check name	Status	Explanation
Title check		The title "perf!: publish ESM-only packages without sourcemaps and test artifacts" matches the main change. The PR removes CommonJS outputs and exports, stops publishing sourcemaps, and narrows packag…
Docstring Coverage		No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Title check

Explanation

The title "perf!: publish ESM-only packages without sourcemaps and test artifacts" matches the main change. The PR removes CommonJS outputs and exports, stops publishing sourcemaps, and narrows package file lists to exclude test and build artifacts. The title is specific and uses a conventional commit prefix. It is a little long at 70 characters, but it is clear.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 19 files. (18 skipped: 18 unsupported.)

Full details: Description check

Explanation

The description summarizes the change, the breaking change for CommonJS consumers, and the stacked-PR context. It also states verification steps for @blocknote/core and @blocknote/react. It does not follow the template: the Rationale, Changes, Impact, Testing, Screenshots/Video, Checklist, and Additional Notes headings are missing. The Rationale and Impact content is only partly covered, and the checklist is absent.

Resolution

Restructure the description to follow the repository template. Add these sections: Rationale (why drop CommonJS and sourcemaps, and the size benefit or its absence), Changes (a list of the major package.json, tsconfig.json, and vite.config changes), Impact (the breaking change for require() consumers, the missing sourcemaps, and the loss of the Node 20.19+ and 22.12+ require() path that the reviewer raised), Testing (the build steps run and any require()/import() checks on the published entries), Screenshots/Video (mark as not applicable), and the Checklist (tick or note each item). Consider also addressing the reviewer's suggestion to add a default export condition next to import.

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pkg-pr-new · 2026-09-24T12:54:12Z

Open in StackBlitz

@blocknote/ariakit

npm i https://pkg.pr.new/@blocknote/ariakit@3118

@blocknote/code-block

npm i https://pkg.pr.new/@blocknote/code-block@3118

@blocknote/core

npm i https://pkg.pr.new/@blocknote/core@3118

@blocknote/diagram-block

npm i https://pkg.pr.new/@blocknote/diagram-block@3118

@blocknote/mantine

npm i https://pkg.pr.new/@blocknote/mantine@3118

@blocknote/math-block

npm i https://pkg.pr.new/@blocknote/math-block@3118

@blocknote/react

npm i https://pkg.pr.new/@blocknote/react@3118

@blocknote/server-util

npm i https://pkg.pr.new/@blocknote/server-util@3118

@blocknote/shadcn

npm i https://pkg.pr.new/@blocknote/shadcn@3118

@blocknote/xl-ai

npm i https://pkg.pr.new/@blocknote/xl-ai@3118

@blocknote/xl-docx-exporter

npm i https://pkg.pr.new/@blocknote/xl-docx-exporter@3118

@blocknote/xl-email-exporter

npm i https://pkg.pr.new/@blocknote/xl-email-exporter@3118

@blocknote/xl-multi-column

npm i https://pkg.pr.new/@blocknote/xl-multi-column@3118

@blocknote/xl-odt-exporter

npm i https://pkg.pr.new/@blocknote/xl-odt-exporter@3118

@blocknote/xl-pdf-exporter

npm i https://pkg.pr.new/@blocknote/xl-pdf-exporter@3118

@blocknote/xl-typst-exporter

npm i https://pkg.pr.new/@blocknote/xl-typst-exporter@3118

commit: 6fd4b91

github-actions · 2026-09-24T12:56:19Z

PR Preview Action v1.8.1
🚀 View preview at https://TypeCellOS.github.io/BlockNote/pr-preview/pr-3118/
Built to branch `gh-pages` at 2026-10-26 09:53 UTC. Preview will be ready when the GitHub Pages deployment is complete.

YousefED · 2026-10-22T18:29:10Z

Recommendation: add a default condition next to import in each JavaScript export. For example:

".": {
  "types": "./types/src/index.d.ts",
  "import": "./dist/blocknote.js",
  "default": "./dist/blocknote.js"
}

Why:

With only import, require("@blocknote/core") fails on all Node versions with ERR_PACKAGE_PATH_NOT_EXPORTED. No condition matches require.
With default, require() works on Node 20.19+ and 22.12+, because these versions can require() an ES module. I tested require() and import() of all published entries on Node 22.14, 23.11 and 24.18.
This keeps CommonJS apps working (for example Jest setups and older Next.js server code), and we do not publish a CommonJS build.

YousefED · 2026-10-22T18:34:05Z

@nperez0111 see above comment from mr. C, might be good to review. But let's go ESM only, great to have this merged

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Actionable comments posted: 1

🪄 Fix comments: Fix CodeRabbit comments on this PR

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Inline comments:
Review comments at @packages/react/vite.config.ts:
- Line 65: Update the versioning build configuration near the formats setting
and the corresponding ./versioning export in package.json so the require
condition no longer points to the unbuilt versioning.cjs file; remove that
condition, or use a default condition targeting versioning.js if modern Node
require interoperability is intended.

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Commits

Reviewing files that changed from the base of the PR and between 3cd4a74 and 52eb1d1.

Files selected for processing: 22

packages/ariakit/vite.config.ts
packages/code-block/vite.config.ts
packages/core/package.json
packages/core/vite.config.ts
packages/diagram-block/vite.config.ts
packages/mantine/vite.config.ts
packages/math-block/package.json
packages/math-block/vite.config.ts
packages/react/package.json
packages/react/vite.config.ts
packages/server-util/vite.config.ts
packages/shadcn/vite.config.ts
packages/xl-ai-server/package.json
packages/xl-ai-server/vite.config.ts
packages/xl-ai/vite.config.ts
packages/xl-docx-exporter/vite.config.ts
packages/xl-email-exporter/vite.config.ts
packages/xl-multi-column/vite.config.ts
packages/xl-odt-exporter/vite.config.ts
packages/xl-pdf-exporter/vite.config.ts
packages/xl-typst-compiler/vite.config.ts
packages/xl-typst-exporter/vite.config.ts

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perf!: ship ESM-only packages without sourcemaps and test artifacts

aa1933e

nperez0111 mentioned this pull request Sep 24, 2026

refactor: remove AI Lodash dependencies and simplify workspace code #3119

Merged

This was referenced Sep 24, 2026

feat(core): bundle localized emoji data and search #3120

Open

feat(react): use localized Frimousse emoji pickers #3121

Open

feat!: localize emoji pickers and reduce package sizes #2903

Closed

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nperez0111 added this pull request to stack #3123 September 24, 2026 14:03

perf: scope AI server side effects to its entry points

d3490b8

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docs: remove ESM-only note from README

3cd4a74

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YousefED mentioned this pull request Oct 22, 2026

test: check the built packages in plain Node, and turn the Next.js server-util test on again #3239

Open

chore: merge main and resolve ESM build config conflict

52eb1d1

coderabbitai Bot reviewed Oct 26, 2026

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Comment thread packages/react/vite.config.ts

fix: add default ESM export conditions for CommonJS consumers

759b67e

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fix: add default conditions to CSS exports

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nperez0111 merged commit ad18925 into main Oct 26, 2026
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nperez0111 deleted the split/esm-package-size branch October 26, 2026 09:47

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perf!: publish ESM-only packages without sourcemaps and test artifacts - #3118

perf!: publish ESM-only packages without sourcemaps and test artifacts#3118
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