The ReScript Language Server server crashed

[taigua]

Problem

ode:internal/modules/esm/load:188
    throw new ERR_UNSUPPORTED_ESM_URL_SCHEME(parsed, schemes);
          ^

Error [ERR_UNSUPPORTED_ESM_URL_SCHEME]: Only URLs with a scheme in: file, data, node, and electron are supported by the default ESM loader. On Windows, absolute paths must be valid file:// URLs. Received protocol 'e:'
    at throwIfUnsupportedURLScheme (node:internal/modules/esm/load:188:11)
    at defaultLoad (node:internal/modules/esm/load:82:3)
    at ModuleLoader.load (node:internal/modules/esm/loader:815:12)
    at ModuleLoader.loadAndTranslate (node:internal/modules/esm/loader:594:31)
    at #createModuleJob (node:internal/modules/esm/loader:624:36)
    at #getJobFromResolveResult (node:internal/modules/esm/loader:343:34)
    at ModuleLoader.getModuleJobForImport (node:internal/modules/esm/loader:311:41)
    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:664:25) {
  code: 'ERR_UNSUPPORTED_ESM_URL_SCHEME'
}

Node.js v22.20.0
[Error - 10:10:19] The ReScript Language Server server crashed 5 times in the last 3 minutes. The server will not be restarted. See the output for more information.

Platform

OS: Windows 11
VSCode: 1.106.3
Rescript: 12.0
Rescript-Vscode: 1.70.0

Reproduce Step

1. Installed NodeJS v24.11.1
2. Create a rescript project hello through npm create rescript-app@latest. The selected template is Vite and the ReScript version is 12.0.0.
3. Use code hello to open the project. (Rescript-Vscode v1.70.0 is already installed)
4. Open App.res in src.
5. The Rescript-Language-Server complains:

node:internal/modules/esm/load:188
    throw new ERR_UNSUPPORTED_ESM_URL_SCHEME(parsed, schemes);
          ^

Error [ERR_UNSUPPORTED_ESM_URL_SCHEME]: Only URLs with a scheme in: file, data, node, and electron are supported by the default ESM loader. On Windows, absolute paths must be valid file:// URLs. Received protocol 'e:'
    at throwIfUnsupportedURLScheme (node:internal/modules/esm/load:188:11)
    at defaultLoad (node:internal/modules/esm/load:82:3)
    at ModuleLoader.load (node:internal/modules/esm/loader:815:12)
    at ModuleLoader.loadAndTranslate (node:internal/modules/esm/loader:594:31)
    at #createModuleJob (node:internal/modules/esm/loader:624:36)
    at #getJobFromResolveResult (node:internal/modules/esm/loader:343:34)
    at ModuleLoader.getModuleJobForImport (node:internal/modules/esm/loader:311:41)
    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:664:25) {
  code: 'ERR_UNSUPPORTED_ESM_URL_SCHEME'
}

Node.js v22.20.0
[Info  - 19:58:54] Connection to server got closed. Server will restart.
true
node:internal/modules/esm/load:188
    throw new ERR_UNSUPPORTED_ESM_URL_SCHEME(parsed, schemes);
          ^

Error [ERR_UNSUPPORTED_ESM_URL_SCHEME]: Only URLs with a scheme in: file, data, node, and electron are supported by the default ESM loader. On Windows, absolute paths must be valid file:// URLs. Received protocol 'e:'
    at throwIfUnsupportedURLScheme (node:internal/modules/esm/load:188:11)
    at defaultLoad (node:internal/modules/esm/load:82:3)
    at ModuleLoader.load (node:internal/modules/esm/loader:815:12)
    at ModuleLoader.loadAndTranslate (node:internal/modules/esm/loader:594:31)
    at #createModuleJob (node:internal/modules/esm/loader:624:36)
    at #getJobFromResolveResult (node:internal/modules/esm/loader:343:34)
    at ModuleLoader.getModuleJobForImport (node:internal/modules/esm/loader:311:41)
    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:664:25) {
  code: 'ERR_UNSUPPORTED_ESM_URL_SCHEME'
}

Node.js v22.20.0
[Info  - 19:58:54] Connection to server got closed. Server will restart.
true
node:internal/modules/esm/load:188
    throw new ERR_UNSUPPORTED_ESM_URL_SCHEME(parsed, schemes);
          ^

Error [ERR_UNSUPPORTED_ESM_URL_SCHEME]: Only URLs with a scheme in: file, data, node, and electron are supported by the default ESM loader. On Windows, absolute paths must be valid file:// URLs. Received protocol 'e:'
    at throwIfUnsupportedURLScheme (node:internal/modules/esm/load:188:11)
    at defaultLoad (node:internal/modules/esm/load:82:3)
    at ModuleLoader.load (node:internal/modules/esm/loader:815:12)
    at ModuleLoader.loadAndTranslate (node:internal/modules/esm/loader:594:31)
    at #createModuleJob (node:internal/modules/esm/loader:624:36)
    at #getJobFromResolveResult (node:internal/modules/esm/loader:343:34)
    at ModuleLoader.getModuleJobForImport (node:internal/modules/esm/loader:311:41)
    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:664:25) {
  code: 'ERR_UNSUPPORTED_ESM_URL_SCHEME'
}

Node.js v22.20.0
[Info  - 19:58:54] Connection to server got closed. Server will restart.
true
node:internal/modules/esm/load:188
    throw new ERR_UNSUPPORTED_ESM_URL_SCHEME(parsed, schemes);
          ^

Error [ERR_UNSUPPORTED_ESM_URL_SCHEME]: Only URLs with a scheme in: file, data, node, and electron are supported by the default ESM loader. On Windows, absolute paths must be valid file:// URLs. Received protocol 'e:'
    at throwIfUnsupportedURLScheme (node:internal/modules/esm/load:188:11)
    at defaultLoad (node:internal/modules/esm/load:82:3)
    at ModuleLoader.load (node:internal/modules/esm/loader:815:12)
    at ModuleLoader.loadAndTranslate (node:internal/modules/esm/loader:594:31)
    at #createModuleJob (node:internal/modules/esm/loader:624:36)
    at #getJobFromResolveResult (node:internal/modules/esm/loader:343:34)
    at ModuleLoader.getModuleJobForImport (node:internal/modules/esm/loader:311:41)
    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:664:25) {
  code: 'ERR_UNSUPPORTED_ESM_URL_SCHEME'
}

Node.js v22.20.0
[Info  - 19:58:54] Connection to server got closed. Server will restart.
true
node:internal/modules/esm/load:188
    throw new ERR_UNSUPPORTED_ESM_URL_SCHEME(parsed, schemes);
          ^

Error [ERR_UNSUPPORTED_ESM_URL_SCHEME]: Only URLs with a scheme in: file, data, node, and electron are supported by the default ESM loader. On Windows, absolute paths must be valid file:// URLs. Received protocol 'e:'
    at throwIfUnsupportedURLScheme (node:internal/modules/esm/load:188:11)
    at defaultLoad (node:internal/modules/esm/load:82:3)
    at ModuleLoader.load (node:internal/modules/esm/loader:815:12)
    at ModuleLoader.loadAndTranslate (node:internal/modules/esm/loader:594:31)
    at #createModuleJob (node:internal/modules/esm/loader:624:36)
    at #getJobFromResolveResult (node:internal/modules/esm/loader:343:34)
    at ModuleLoader.getModuleJobForImport (node:internal/modules/esm/loader:311:41)
    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:664:25) {
  code: 'ERR_UNSUPPORTED_ESM_URL_SCHEME'
}

Node.js v22.20.0
[Error - 19:58:54] The ReScript Language Server server crashed 5 times in the last 3 minutes. The server will not be restarted. See the output for more information.

[nojaf]

Hello,

The stack trace you provided is not useful. It contains no references to our code and does not show what you are doing or what your environment and configuration look like.

Please provide a very small sample project that reproduces the issue so we can investigate.

[taigua]

Sorry. I've update the re-produce step .

[nojaf]

Thanks, I still haven't found the courage to boot my old Windows machine.

[taigua]

Please, master. May the Force be with you.