Add typings for ext submodules

.npmignore

@@ -9,5 +9,5 @@
 !README.md
 !binding.gyp
 !index.js
-!index.d.ts
+!*.d.ts
 !package.json

ext/formats.d.ts

@@ -0,0 +1,10 @@
+import * as opentracing from 'opentracing'
+
+declare const formats: {
+  TEXT_MAP: typeof opentracing.FORMAT_TEXT_MAP
+  HTTP_HEADERS: typeof opentracing.FORMAT_HTTP_HEADERS
+  BINARY: typeof opentracing.FORMAT_BINARY
+  LOG: boolean
+}
+
+export = formats

ext/index.d.ts

@@ -0,0 +1,5 @@
+import * as priority from './priority'
+import * as tags from './tags'
+import * as formats from './formats'
+
+export { priority, tags, formats }

ext/kinds.d.ts

@@ -0,0 +1,8 @@
+declare const kinds: {
+  SERVER: string
+  CLIENT: string
+  PRODUCER: string
+  CONSUMER: string
+}
+
+export = kinds

ext/priority.d.ts

@@ -0,0 +1,8 @@
+declare const priority: {
+  USER_REJECT: number
+  AUTO_REJECT: number
+  AUTO_KEEP: number
+  USER_KEEP: number
+}
+
+export = priority

ext/tags.d.ts

@@ -0,0 +1,19 @@
+declare const tags: {
+  SERVICE_NAME: string
+  RESOURCE_NAME: string
+  SPAN_TYPE: string
+  SPAN_KIND: string
+  SAMPLING_PRIORITY: string
+  ANALYTICS: string
+  ERROR: string
+  MANUAL_KEEP: string
+  MANUAL_DROP: string
+  HTTP_URL: string
+  HTTP_METHOD: string
+  HTTP_STATUS_CODE: string
+  HTTP_ROUTE: string
+  HTTP_REQUEST_HEADERS: string
+  HTTP_RESPONSE_HEADERS: string
+}
+
+export = tags

ext/types.d.ts

@@ -0,0 +1,6 @@
+declare const types: {
+  HTTP: string
+  WEB: string
+}
+
+export = types