常連

### 前提・実現したいこと
Jupyter labにvariavle inspectorをインストールしたい

### 発生している問題・エラーメッセージ
conda install -c conda-forge nodejs
jupyter labextension install @lckr/jupyterlab_variableinspector
jupyter lab build
を行うと、以下のようなエラーが出てきました。

```
An error occured.
RuntimeError: JupyterLab failed to build
See the log file for details:  C:\Users\xxxxx\AppData\Local\Temp\jupyterlab-debug-irl0hcwp.log
```

ログファイルは以下です。

```ここに言語名を入力
[LabBuildApp] Building in C:\Users\xxxxx\anaconda3\share\jupyter\lab
[LabBuildApp] Node v14.8.0

（中略）

[1m[31mERROR[39m[22m in [1m[32mresolving fallback for shared module @lckr/jupyterlab_variableinspector[39m[22m
[1mModule [1m[31mnot found[39m[22m[1m: [1m[31mError[39m[22m[1m: Can't resolve '@lckr/jupyterlab_variableinspector' in 'C:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\build'[39m[22m
resolve '@lckr/jupyterlab_variableinspector' in 'C:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\build'
  Parsed request is a module
  using description file: C:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\build\package.json (relative path: .)
    Field 'browser' doesn't contain a valid alias configuration
    resolve as module
      [1m[31mC:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\build\node_modules doesn't exist[39m[22m or is not a directory
      looking for modules in C:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules
        single file module
          using description file: C:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\package.json (relative path: ./node_modules/@lckr/jupyterlab_variableinspector)
            no extension
              Field 'browser' doesn't contain a valid alias configuration
              C:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules\@lckr\jupyterlab_variableinspector is not a file
            .js
（中略）

[1m[31mC:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules\@lckr\jupyterlab_variableinspector\lib\index.js doesn't exist[39m[22m
                        .js
                          Field 'browser' doesn't contain a valid alias configuration
                          [1m[31mC:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules\@lckr\jupyterlab_variableinspector\lib\index.js.js doesn't exist[39m[22m
                        .json
                          Field 'browser' doesn't contain a valid alias configuration
                          [1m[31mC:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules\@lckr\jupyterlab_variableinspector\lib\index.js.json doesn't exist[39m[22m
                        .wasm
                          Field 'browser' doesn't contain a valid alias configuration
                          [1m[31mC:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules\@lckr\jupyterlab_variableinspector\lib\index.js.wasm doesn't exist[39m[22m
                        as directory
                          [1m[31mC:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules\@lckr\jupyterlab_variableinspector\lib\index.js doesn't exist[39m[22m
                    using path: C:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules\@lckr\jupyterlab_variableinspector\index
                      using description file: C:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules\@lckr\jupyterlab_variableinspector\package.json (relative path: ./index)
                        no extension
                          Field 'browser' doesn't contain a valid alias configuration
                          [1m[31mC:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules\@lckr\jupyterlab_variableinspector\index doesn't exist[39m[22m
                        .js
                          Field 'browser' doesn't contain a valid alias configuration
                          [1m[31mC:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules\@lckr\jupyterlab_variableinspector\index.js doesn't exist[39m[22m
                        .json
                          Field 'browser' doesn't contain a valid alias configuration
                          [1m[31mC:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules\@lckr\jupyterlab_variableinspector\index.json doesn't exist[39m[22m
                        .wasm
                          Field 'browser' doesn't contain a valid alias configuration
                          [1m[31mC:\Users\xxxxx\anaconda3\share\jupyter\lab\staging\node_modules\@lckr\jupyterlab_variableinspector\index.wasm doesn't exist[39m[22m
      [1m[31mC:\Users\xxxxx\anaconda3\share\jupyter\lab\node_modules doesn't exist[39m[22m or is not a directory
      [1m[31mC:\Users\xxxxx\anaconda3\share\jupyter\node_modules doesn't exist[39m[22m or is not a directory
      [1m[31mC:\Users\xxxxx\anaconda3\share\node_modules doesn't exist[39m[22m or is not a directory
      looking for modules in C:\Users\xxxxx\anaconda3\node_modules
        single file module
          No description file found in C:\Users\xxxxx\anaconda3\node_modules\@lckr or above
          no extension
            Field 'browser' doesn't contain a valid alias configuration
            [1m[31mC:\Users\xxxxx\anaconda3\node_modules\@lckr\jupyterlab_variableinspector doesn't exist[39m[22m
          .js
            Field 'browser' doesn't contain a valid alias configuration
            [1m[31mC:\Users\xxxxx\anaconda3\node_modules\@lckr\jupyterlab_variableinspector.js doesn't exist[39m[22m
          .json
            Field 'browser' doesn't contain a valid alias configuration
            [1m[31mC:\Users\xxxxx\anaconda3\node_modules\@lckr\jupyterlab_variableinspector.json doesn't exist[39m[22m
          .wasm
            Field 'browser' doesn't contain a valid alias configuration
            [1m[31mC:\Users\xxxxx\anaconda3\node_modules\@lckr\jupyterlab_variableinspector.wasm doesn't exist[39m[22m
        [1m[31mC:\Users\xxxxx\anaconda3\node_modules\@lckr\jupyterlab_variableinspector doesn't exist[39m[22m
      [1m[31mC:\Users\xxxxx\node_modules doesn't exist[39m[22m or is not a directory
      [1m[31mC:\Users\node_modules doesn't exist[39m[22m or is not a directory
      [1m[31mC:\node_modules doesn't exist[39m[22m or is not a directory

webpack 5.37.0 compiled with [1m[31m1 error[39m[22m and [1m[33m1 warning[39m[22m in 57352 ms

asset [1m[32mindex.css[39m[22m 16.1 KiB [1m[33m[compared for emit][39m[22m (name: index)
asset [1m[32mindex.js[39m[22m 0 bytes [1m[33m[compared for emit][39m[22m [1m[32m[minimized][39m[22m (name: index)
Entrypoint [1mindex[39m[22m 16.1 KiB = [1m[32mindex.css[39m[22m 16.1 KiB [1m[32mindex.js[39m[22m 0 bytes
[1m./node_modules/@jupyterlab/theme-dark-extension/style/index.css[39m[22m 50 bytes [1m[33m[built][39m[22m [1m[33m[code generated][39m[22m
css ./node_modules/css-loader/dist/cjs.js![1m./node_modules/@jupyterlab/theme-dark-extension/style/variables.css[39m[22m 15.3 KiB [1m[33m[code generated][39m[22m
css ./node_modules/css-loader/dist/cjs.js![1m./node_modules/@jupyterlab/theme-dark-extension/style/base.css[39m[22m 472 bytes [1m[33m[code generated][39m[22m
css ./node_modules/css-loader/dist/cjs.js![1m./node_modules/@jupyterlab/theme-dark-extension/style/index.css[39m[22m 342 bytes [1m[33m[code generated][39m[22m
webpack 5.37.0 compiled [1m[32msuccessfully[39m[22m in 4340 ms

asset [1m[32mindex.css[39m[22m 15 KiB [1m[33m[compared for emit][39m[22m (name: index)
asset [1m[32mindex.js[39m[22m 0 bytes [1m[33m[compared for emit][39m[22m [1m[32m[minimized][39m[22m (name: index)
Entrypoint [1mindex[39m[22m 15 KiB = [1m[32mindex.css[39m[22m 15 KiB [1m[32mindex.js[39m[22m 0 bytes
[1m./node_modules/@jupyterlab/theme-light-extension/style/index.css[39m[22m 50 bytes [1m[33m[built][39m[22m [1m[33m[code generated][39m[22m
css ./node_modules/css-loader/dist/cjs.js![1m./node_modules/@jupyterlab/theme-light-extension/style/variables.css[39m[22m 14.2 KiB [1m[33m[code generated][39m[22m
css ./node_modules/css-loader/dist/cjs.js![1m./node_modules/@jupyterlab/theme-light-extension/style/base.css[39m[22m 472 bytes [1m[33m[code generated][39m[22m
css ./node_modules/css-loader/dist/cjs.js![1m./node_modules/@jupyterlab/theme-light-extension/style/index.css[39m[22m 342 bytes [1m[33m[code generated][39m[22m
webpack 5.37.0 compiled [1m[32msuccessfully[39m[22m in 4407 ms
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

[LabBuildApp] JupyterLab failed to build
[LabBuildApp] Traceback (most recent call last):

[LabBuildApp]   File "C:\Users\xxxxx\anaconda3\lib\site-packages\jupyterlab\debuglog.py", line 47, in debug_logging
    yield

[LabBuildApp]   File "C:\Users\xxxxx\anaconda3\lib\site-packages\jupyterlab\labapp.py", line 166, in start
    raise e

[LabBuildApp]   File "C:\Users\xxxxx\anaconda3\lib\site-packages\jupyterlab\labapp.py", line 162, in start
    build(name=self.name, version=self.version,

[LabBuildApp]   File "C:\Users\xxxxx\anaconda3\lib\site-packages\jupyterlab\commands.py", line 469, in build
    return handler.build(name=name, version=version, static_url=static_url,

[LabBuildApp]   File "C:\Users\xxxxx\anaconda3\lib\site-packages\jupyterlab\commands.py", line 678, in build
    raise RuntimeError(msg)

[LabBuildApp] RuntimeError: JupyterLab failed to build

[LabBuildApp] Exiting application: JupyterLab

```

### 試したこと
jupyterlabをアンインストール、再インストールしたり、variable inspectorのアンインストール／再インストールをしても、症状は変わりませんでした。何か原因を思いつかれる方、お教えいただけますと幸いです。

### 補足情報（FW/ツールのバージョンなど）
jupyterlab                3.0.16
nodejs                    14.8.0

	@@ -1 +1 @@
1	- ~~Anaconda~~ Jupyter lab~~に拡張機能（~~variable inspector）をインストールしたい
1	+ Jupyter labへのvariable inspectorインストールができない（Field 'browser' doesn't contain a valid alias）

質問編集履歴