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Add fetch-native proxy support (HTTPS_PROXY / HTTP_PROXY / NO_PROXY) #382

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a400486
Add fetch-native proxy support (HTTPS_PROXY / HTTP_PROXY / NO_PROXY)
robgruen Jul 6, 2026
19b58b8
Fold useResponsesApi into LanguageModelOptions
robgruen Jul 6, 2026
a3a0a48
Bump typechat version to 0.1.3
robgruen Jul 6, 2026
409b1c3
Fix pyright CI failure: pin pytest<9 for syrupy 5.x compatibility
Copilot Jul 6, 2026
182ebdb
Potential fix for pull request finding
robgruen Jul 6, 2026
13cc919
Fix pyright CI pytest plugin failure by adding pytest-xdist
Copilot Jul 6, 2026
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3 changes: 2 additions & 1 deletion python/pyproject.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,8 @@ dependencies = [
# Development-time dependencies.
dev = [
"coverage[toml]>=6.5",
"pytest>=8.0.2",
"pytest>=8.0.2,<9",
"pytest-xdist>=3.8.0",
"syrupy>=5.0.0",
]

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19 changes: 19 additions & 0 deletions typescript/examples/README.md
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Expand Up @@ -92,6 +92,25 @@ AZURE_OPENAI_ENDPOINT=...
AZURE_OPENAI_API_KEY=...
```

### Using a proxy (optional)

If the model endpoint can only be reached through a proxy (for example in restricted regions),
`createLanguageModel` honors the standard `HTTPS_PROXY` / `HTTP_PROXY` / `ALL_PROXY` environment
variables, and `NO_PROXY` for hosts that should bypass the proxy — set them (e.g. in your `.env`
file) and requests are routed accordingly:

```ini
HTTPS_PROXY=http://127.0.0.1:7890
# Optional: comma-separated hosts that should bypass the proxy
NO_PROXY=localhost,127.0.0.1
```

Proxy support uses [`undici`](https://www.npmjs.com/package/undici) (which also powers Node's
built-in `fetch`). It is an optional dependency loaded only when a proxy is configured, so install
it when you need this: `npm install undici`. When calling `createOpenAILanguageModel` or
`createAzureOpenAILanguageModel` directly, pass the proxy explicitly via the `options` argument:
`createOpenAILanguageModel(apiKey, model, endPoint, org, { proxyUrl })` (or `createAzureOpenAILanguageModel(apiKey, endPoint, { proxyUrl })`).

## Step 4: Run the examples

Examples can be found in the `examples` directory.
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21 changes: 18 additions & 3 deletions typescript/package-lock.json
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9 changes: 7 additions & 2 deletions typescript/package.json
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
{
"name": "typechat",
"author": "Microsoft",
"version": "0.1.2",
"version": "0.1.3",
"license": "MIT",
"description": "TypeChat is an experimental library that makes it easy to build natural language interfaces using types.",
"keywords": [
Expand Down Expand Up @@ -48,6 +48,7 @@
],
"peerDependencies": {
"typescript": "^5.3.3",
"undici": "^6.0.0",
"zod": "^4.4.3"
},
"peerDependenciesMeta": {
Expand All @@ -56,10 +57,14 @@
},
"zod": {
"optional": true
},
"undici": {
"optional": true
}
},
"devDependencies": {
"@types/node": "^20.10.4"
"@types/node": "^20.10.4",
"undici": "^6.27.0"
},
"workspaces": [
"./",
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