💥 Changed withTemplate to return tuple for raw error generation

package.json

@@ -24,9 +24,6 @@
   "files": [
     "dist"
   ],
-  "engines": {
-    "node": ">=10.24"
-  },
   "scripts": {
     "build": "siroc build",
     "changelog": "gitmoji-changelog",
@@ -60,6 +57,9 @@
     "ts-jest": "^27.0.7",
     "typescript": "^4.4.4"
   },
+  "engines": {
+    "node": ">=10.24"
+  },
   "size-limit": [
     {
       "name": "withError",

src/index.ts

@@ -54,8 +54,10 @@ export function withError (res: ServerResponse, err: Partial<HoustonError>): voi
  *
  * @param template The template's values.
  * @returns A `withError` function which can be invoked to apply the error
- * template to a `http.ServerResponse` object.
+ * template to a `http.ServerResponse` object, and a `raw` function to
+ * generate a plain object from the template (without touching the `http`
+ * module).
  */
-export function withTemplate (template: Partial<HoustonError>): (res: ServerResponse, err?: Partial<HoustonError>) => void {
-  return (res, err) => withError(res, { ...template, ...err })
+export function withTemplate (template: Partial<HoustonError>): [(res: ServerResponse, err?: Partial<HoustonError>) => void, (err?: Partial<HoustonError>) => Partial<HoustonError>] {
+  return [(res, err) => withError(res, { ...template, ...err }), err => ({ ...template, ...err })]
 }

test/index.test.ts

@@ -31,16 +31,24 @@ describe('withError', () => {
 })
 
 describe('withTemplate', () => {
-  it('should return a function', () => {
-    const withNotFound = withTemplate({ status: 404 })
+  it('should return a withError function', () => {
+    const [withNotFound] = withTemplate({ status: 404 })
     expect(typeof withNotFound).toStrictEqual('function')
   })
 
   it('should merge the defaults with the supplied error', () => {
-    const withNotFound = withTemplate({ status: 404 })
+    const [withNotFound] = withTemplate({ status: 404 })
     const res = new MockRes()
     withNotFound(res)
 
     expect(res.statusCode).toStrictEqual(404)
   })
+
+  it('should return a raw function', () => {
+    const [, withNotFound] = withTemplate({ status: 404 })
+    expect(typeof withNotFound).toStrictEqual('function')
+
+    const res = withNotFound({ status: 200 })
+    expect(res.status).toStrictEqual(200)
+  })
 })