chore: Start cleaning up medusa-core-utils (#7450)

**What**
- remove medusa-core-utils
- dispatch the utils where they belongs
- update usage

**NOTE**
I have been wondering if the graceful class should go into the utils package or medusa package, I ve put it in the medusa package as it seems to be the best place I can see for now and is tight to the server as well. Also, I wanted to avoid the utils package to depends on http and net dependencies, happy to change that if you feel like it

packages/core/utils/src/common/__tests__/build-regexp-if-valid.spec.ts

@@ -0,0 +1,12 @@
+import { buildRegexpIfValid } from "../build-regexp-if-valid"
+
+describe("buildRegexpIfValid", function () {
+  it("should return either a regexp or undefined", () => {
+    expect(buildRegexpIfValid("abc")).not.toBeDefined()
+    expect(buildRegexpIfValid("/abc/")).toBeTruthy()
+    expect(buildRegexpIfValid("/ab#/[c]/ig")).toBeTruthy()
+    expect(buildRegexpIfValid("@ab#/[c]@ig")).toBeTruthy()
+    expect(buildRegexpIfValid("/ab/[c/ig")).not.toBeDefined()
+    expect(buildRegexpIfValid("/abc/gig")).not.toBeDefined()
+  })
+})

packages/core/utils/src/common/__tests__/parse-cors-origins.spec.ts

@@ -0,0 +1,16 @@
+import { parseCorsOrigins } from "../parse-cors-origins"
+
+describe("parseCorsOrigins", function () {
+  it("should return an array containing both string and regexp", () => {
+    const cors = "abc,/abc/,/ab#/[c]/ig,@ab#/[c]@ig,/ab/[c/ig,/abc/gig"
+    const [origin1, origin2, origin3, origin4, origin5, origin6] =
+      parseCorsOrigins(cors)
+
+    expect(typeof origin1).toBe("string")
+    expect(origin2).toBeInstanceOf(RegExp)
+    expect(origin3).toBeInstanceOf(RegExp)
+    expect(origin4).toBeInstanceOf(RegExp)
+    expect(typeof origin5).toBe("string")
+    expect(typeof origin6).toBe("string")
+  })
+})

packages/core/utils/src/common/build-regexp-if-valid.ts

@@ -0,0 +1,10 @@
+export function buildRegexpIfValid(str: string): RegExp | undefined {
+  try {
+    const m = str.match(/^([\/~@;%#'])(.*?)\1([gimsuy]*)$/)
+    if (m) {
+      return new RegExp(m[2], m[3])
+    }
+  } catch (e) {}
+
+  return
+}

packages/core/utils/src/common/get-config-file.ts

@@ -6,7 +6,7 @@ import { join } from "path"
  * @param {string} configName - the name of the config file.
  * @return {object} an object containing the config module and its path as well as an error property if the config couldn't be loaded.
  */
-function getConfigFile<TConfig = unknown>(
+export function getConfigFile<TConfig = unknown>(
   rootDir: string,
   configName: string
 ): { configModule: TConfig; configFilePath: string; error?: any } {
@@ -28,5 +28,3 @@ function getConfigFile<TConfig = unknown>(
 
   return { configModule, configFilePath, error: err }
 }
-
-export default getConfigFile

packages/core/utils/src/common/index.ts

@@ -59,3 +59,5 @@ export * from "./upper-case-first"
 export * from "./wrap-handler"
 export * from "./to-handle"
 export * from "./validate-handle"
+export * from "./parse-cors-origins"
+export * from "./build-regexp-if-valid"

packages/core/utils/src/common/parse-cors-origins.ts

@@ -0,0 +1,9 @@
+import { buildRegexpIfValid } from "./build-regexp-if-valid"
+
+export function parseCorsOrigins(str: string): (string | RegExp)[] {
+  return !str
+    ? []
+    : str.split(",").map((subStr) => {
+        return buildRegexpIfValid(subStr) ?? subStr
+      })
+}