extensions/typescript-language-features/src/tsServer/serverError.ts/TypeScriptServerError/telemetry
class TypeScriptServerError:	public get telemetry() {
		// The "sanitizedstack" has been purged of error messages, paths, and file names (other than tsserver)
		// and, thus, can be classified as SystemMetaData, rather than CallstackOrException.
		/* __GDPR__FRAGMENT__
			"TypeScriptRequestErrorProperties" : {
				"command" : { "classification": "SystemMetaData", "purpose": "FeatureInsight" },
				"serverid" : { "classification": "SystemMetaData", "purpose": "PerformanceAndHealth" },
				"sanitizedstack" : { "classification": "SystemMetaData", "purpose": "PerformanceAndHealth" },
				"badclient" : { "classification": "SystemMetaData", "purpose": "PerformanceAndHealth" }
			}
		*/
		return {
			command: this.serverCommand,
			serverid: this.serverId,
			sanitizedstack: this.sanitizedStack || '',
			badclient: /\bBADCLIENT\b/.test(this.stack || ''),
		} as const;
	}