WIP - add extractor, generate snippet_data

node_modules/gatsby-telemetry/README.md

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+# gatsby-telemetry
+
+Check out: [gatsby.dev/telemetry](https://gatsby.dev/telemetry)
+
+## API
+
+### trackCli(type, tags)
+
+Capture an event of type `type` and decorate the generated event with these tags (note: allowed tags are filtered on server side)
+
+### trackError(type, tags)
+
+Capture an error of type `type`. The exception maybe passed in tags and it will be sanitize to anonymize the contents.
+
+### trackBuildError(type, tags)
+
+Capture an build error of type `type`. The exception maybe passed in tags and it will be sanitize to anonymize the contents.
+
+### setDefaultTags(tags)
+
+Set additional tags to be included in all future events.
+
+### decorateEvent(type, tags)
+
+Attach additional tags to the next event generated of type `type`.
+
+### setTelemetryEnabled(enabled)
+
+Enable or disable the telemetry collection.
+
+### expressMiddleware(type)
+
+Returns a debounced events tracker for collecting general activity information for incoming requests.
+
+## ENV Variables
+
+- Set `GATSBY_TELEMETRY_DEBUG` to `1` to print the telemetry data instead of sending it over
+- Set `GATSBY_TELEMETRY_DISABLED` to `1` to opt out of all telemetry
+- Set `GATSBY_TELEMETRY_VERBOSE` to `1` to log all telemetry