diff --git a/src/types/global.d.ts b/src/types/global.d.ts
new file mode 100644
index 0000000..37ea629
--- /dev/null
+++ b/src/types/global.d.ts
@@ -0,0 +1,6 @@
+export type StateTypes = 'idle' | 'loading' | 'error' | 'success'
+export type ConvertionHandler = (message: string, state: StateTypes) => void
+
+export interface KeyValuePairs {
+  [index: string]: string
+}