feat: Typescript for API layer (#817)

Co-authored-by: Philip Korsholm <88927411+pKorsholm@users.noreply.github.com>
Co-authored-by: Zakaria El Asri <33696020+zakariaelas@users.noreply.github.com>
Co-authored-by: Kasper Fabricius Kristensen <45367945+kasperkristensen@users.noreply.github.com>
Co-authored-by: Philip Korsholm <philip.korsholm@hotmail.com>
Co-authored-by: Sebastian Rindom <seb@medusa-commerce.com>

packages/medusa/src/utils/db-aware-column.ts

@@ -1,6 +1,6 @@
+import { getConfigFile } from "medusa-core-utils"
 import path from "path"
 import { Column, ColumnOptions, ColumnType } from "typeorm"
-import { getConfigFile } from "medusa-core-utils"
 
 const pgSqliteTypeMapping: { [key: string]: ColumnType } = {
   increment: "rowid",
@@ -19,7 +19,10 @@ let dbType: string
 export function resolveDbType(pgSqlType: ColumnType): ColumnType {
   if (!dbType) {
     try {
-      const { configModule } = getConfigFile(path.resolve("."), `medusa-config`)
+      const { configModule } = getConfigFile(
+        path.resolve("."),
+        `medusa-config`
+      ) as any
       dbType = configModule.projectConfig.database_type
     } catch (error) {
       // Default to Postgres to allow for e.g. migrations to run
@@ -27,7 +30,7 @@ export function resolveDbType(pgSqlType: ColumnType): ColumnType {
     }
   }
 
-  if (dbType === "sqlite" && pgSqlType in pgSqliteTypeMapping) {
+  if (dbType === "sqlite" && (pgSqlType as string) in pgSqliteTypeMapping) {
     return pgSqliteTypeMapping[pgSqlType.toString()]
   }
   return pgSqlType
@@ -38,7 +41,10 @@ export function resolveDbGenerationStrategy(
 ): "increment" | "uuid" | "rowid" {
   if (!dbType) {
     try {
-      const { configModule } = getConfigFile(path.resolve("."), `medusa-config`)
+      const { configModule } = getConfigFile(
+        path.resolve("."),
+        `medusa-config`
+      ) as any
       dbType = configModule.projectConfig.database_type
     } catch (error) {
       // Default to Postgres to allow for e.g. migrations to run
@@ -52,7 +58,7 @@ export function resolveDbGenerationStrategy(
   return pgSqlType
 }
 
-export function DbAwareColumn(columnOptions: ColumnOptions) {
+export function DbAwareColumn(columnOptions: ColumnOptions): PropertyDecorator {
   const pre = columnOptions.type
   if (columnOptions.type) {
     columnOptions.type = resolveDbType(columnOptions.type)