Paste Config Improvement: add support for a filter function in pasteConfig to allow matching elements by attributes · codex-team/editor.js#2959

2025-10-14T15:59:41.000Z

**Motivation** * Need a central place to validate/normalize app-generated paste payloads. * Current gaps: * Multiline paste: `patterns` aren’t applied because payload is treated as HTML. * Can’t apply cross-line rules (e.g., “entire bold line → header”) before blocks are created. * Special formatting cases are hard to solve tool-by-tool (see #2909). **Proposal** * Add a top-level `pasteInterceptor` option that receives `PasteData`(s) and can transform/validate them **before** insertion. **Prior art / PoC** * Special formatting context: [https://github.com/codex-team/editor.js/issues/2909](https://github.com/codex-team/editor.js/issues/2909) * Minimal implementation sketch: [https://github.com/tylox-team/editor.js/commit/d3d88da262541257c3659ea827a35692445360e4](https://github.com/tylox-team/editor.js/commit/d3d88da262541257c3659ea827a35692445360e4) **Next steps** * If this sounds reasonable, I can open a PR with the solution.

(17 comments) (2 reactions) (0 assignees)TypeScript (26,602 stars) (1,985 forks)batch import

good first issue

説明

Motivation

Need a central place to validate/normalize app-generated paste payloads.
Current gaps:
- Multiline paste: patterns aren’t applied because payload is treated as HTML.
- Can’t apply cross-line rules (e.g., “entire bold line → header”) before blocks are created.
- Special formatting cases are hard to solve tool-by-tool (see #2909).

Proposal

Add a top-level pasteInterceptor option that receives PasteData(s) and can transform/validate them before insertion.

Prior art / PoC

Special formatting context: https://github.com/codex-team/editor.js/issues/2909
Minimal implementation sketch: https://github.com/tylox-team/editor.js/commit/d3d88da262541257c3659ea827a35692445360e4

Next steps

If this sounds reasonable, I can open a PR with the solution.

コントリビューターガイド

技術スタック: typescript
領域: frontend
Issue 種別: feature
難度: 3
推定時間: 1-2 days
活動状況: active
明確さ: clear
前提条件: Editor.js plugin architectureTypeScriptpaste handling concepts
初心者向け度: 50
調査方針: Review the PoC commit at https://github.com/tylox team/editor.js/commit/d3d88da262541257c3659ea827a35692445360e4 for implementation sketch. Check issue #2909 for special formatting context. Investigate the current paste handling in the Editor.js source, particularly the PasteConfig and how patterns are applied. Consider how the interceptor should integrate with the existing paste pipeline. Look for any maintainer feedback in the comments regarding desired API.