build-header: remove import from esm folder

Author: macabeus

example/assets/locales/pt-br/translations.ftl.d.ts

@@ -1,12 +1,11 @@
 // This file is automatically generated.
 // Please do not change this file!
 
-import { ComplexPattern } from '@fluent/bundle/esm/ast'
 import { FluentBundle } from '@fluent/bundle'
 
-type Pattern<T> = T | ComplexPattern
+type Pattern<T extends MessagesKey> = T | Parameters<FluentBundle['formatPattern']>[0]
 
-type Message<T> = {
+type Message<T extends MessagesKey> = {
   id: T
   value: Pattern<T>
   attributes: Record<string, Pattern<T>>

src/build-header.js

@@ -5,12 +5,11 @@ const bannerMessage = (
 )
 
 const header = dedent`
-  import { ComplexPattern } from '@fluent/bundle/esm/ast'
   import { FluentBundle } from '@fluent/bundle'
   
-  type Pattern<T> = T | ComplexPattern
+  type Pattern<T extends MessagesKey> = T | Parameters<FluentBundle['formatPattern']>[0]
   
-  type Message<T> = {
+  type Message<T extends MessagesKey> = {
     id: T
     value: Pattern<T>
     attributes: Record<string, Pattern<T>>

test/index.test.js

@@ -14,12 +14,11 @@ test('Should match the types definitions', async () => {
     // This file is automatically generated.
     // Please do not change this file!
 
-    import { ComplexPattern } from '@fluent/bundle/esm/ast'
     import { FluentBundle } from '@fluent/bundle'
 
-    type Pattern<T> = T | ComplexPattern
+    type Pattern<T extends MessagesKey> = T | Parameters<FluentBundle['formatPattern']>[0]
 
-    type Message<T> = {
+    type Message<T extends MessagesKey> = {
       id: T
       value: Pattern<T>
       attributes: Record<string, Pattern<T>>