microsoft / microsoft/monaco-editor
[Bug] 0.56.0 browser-esm-esbuild build error
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@hediet is already working on this.
Since Jul 22, 2026.
bug
- Dominant language
- JavaScript
- Stars
- 46.8k
- Forks
- 4.1k
- Avg merge
- 17h 58m
- Merged PRs (30d)
- 1
Description
Reproducible in vscode.dev or in VS Code Desktop?
- Not reproducible in vscode.dev or VS Code Desktop
Reproducible in the monaco editor playground?
- Not reproducible in the monaco editor playground
Monaco Editor Playground Link
0.56.0 fails to build.
It works fine with 0.55.1
$ npm run build
npm notice run build
npm notice run node ./build.js
Deleted dist
✘ [ERROR] Could not resolve "monaco-editor/esm/vs/editor/editor.main.js"
index.js:1:24:
1 │ import * as monaco from 'monaco-editor/esm/vs/editor/editor.main.js';
╵ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The module "./esm/vs/esm/vs/editor/editor.main.js" was not found on the file
system:
../node_modules/monaco-editor/package.json:45:14:
45 │ "./*.js": "./esm/vs/*.js",
╵ ~~~~~~~~~~~~~~~
Changes to package.json
v0.55.1
"exports": {
".": {
"types": "./esm/vs/editor/editor.main.d.ts",
"import": "./esm/vs/editor/editor.main.js",
"require": "./min/vs/editor/editor.main.js"
},
"./*": "./*"
},
v0.56.0
"exports": {
".": {
"types": "./esm/vs/index.d.ts",
"import": "./esm/vs/index.js",
"require": "./min/vs/index.js"
},
"./*.js": "./esm/vs/*.js",
"./*": "./esm/vs/*.js"
},
Monaco Editor Playground Code
Reproduction Steps
- Install monaco-editor 0.56.0
- Copy browser-esm-esbuild to
/home - Open Terminal
npm run build
Actual (Problematic) Behavior
No response
Expected Behavior
No response
Additional Context
No response
Contributor guide
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- Open a pull request that references the issue number.
Assessment
This issue has not been assessed yet.