[Bug] 0.56.0 browser-esm-esbuild build error
Author: erosmanCreated Jul 22, 2026Updated Aug 28, 2026
Labelsbug
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
Source: microsoft/monaco-editor