adds tracing and opentelemetry exporting to the LSP.
enable it in `.vscode/settings.json` (or wherever you configure the
LSP), like
```
{
"deno.tracing": true
}
```
which will by default export opentelemetry traces to `localhost:4317`
or
```
{
"deno.tracing": {
// all fields optional
"collector": "openTelemetry" (default) | "logging" (output in lsp log window)
"collectorEndpoint": "http://localhost:4318" (for opentelemetry)
"enable": true | false,
"filter": "info" // defaults to "info", but can be any span filter
}
}
```
---
a full working setup would be
1: Run jaeger (an opentelemetry collector with a nice UI):
```
docker run --rm -p 16686:16686 -p 4317:4317 jaegertracing/jaeger
```
2. Enable in .vscode/settings.json
```
{
"deno.tracing": true
}
```
3. Restart LSP (right now it only will start the opentelemetry exporter
on LSP startup)
3. open `http://localhost:16686` in your browser
---------
Co-authored-by: Nathan Whitaker <nathan@deno.com>
This commit adds an unstable lint plugin API.
Plugins are specified in the `deno.json` file under
`lint.plugins` option like so:
```
{
"lint": {
"plugins": [
"./plugins/my-plugin.ts",
"jsr:@deno/lint-plugin1",
"npm:@deno/lint-plugin2"
]
}
}
```
The API is considered unstable and might be subject
to changes in the future.
Plugin API was modelled after ESLint API for the
most part, but there are no guarantees for compatibility.
The AST format exposed to plugins is closely modelled
after the AST that `typescript-eslint` uses.
Lint plugins use the visitor pattern and can add
diagnostics like so:
```
export default {
name: "lint-plugin",
rules: {
"plugin-rule": {
create(context) {
return {
Identifier(node) {
if (node.name === "a") {
context.report({
node,
message: "should be b",
fix(fixer) {
return fixer.replaceText(node, "_b");
},
});
}
},
};
},
},
},
} satisfies Deno.lint.Plugin;
```
Besides reporting errors (diagnostics) plugins can provide
automatic fixes that use text replacement to apply changes.
---------
Co-authored-by: Marvin Hagemeister <marvin@deno.com>
Co-authored-by: David Sherret <dsherret@gmail.com>
