fix: support Windows (#26)

* fix: support Windows

* test: win line endings <3

.circleci/config.yml

@@ -1,4 +1,7 @@
-version: 2
+version: 2.1
+
+orbs:
+  windows: circleci/windows@2.2.0
 
 jobs:
   test_node_12:
@@ -8,6 +11,15 @@ jobs:
     - checkout
     - run: yarn
     - run: yarn test.prod
+
+  test_windows:
+    executor:
+      name: windows/default
+    steps:
+      - checkout
+      - run: yarn
+      - run: yarn test.prod
+
   release:
     docker:
     - image: circleci/node:12
@@ -22,9 +34,11 @@ workflows:
   test_and_release:
     jobs:
     - test_node_12
+    - test_windows
     - release:
         filters:
           branches:
             only: master
         requires:
         - test_node_12
+        - test_windows

src/__tests__/__fixtures__/test.json

@@ -0,0 +1 @@
+{}

src/__tests__/file.spec.ts

@@ -1,17 +1,15 @@
-import { readFile } from 'fs';
+import * as path from 'path';
 import * as URI from 'urijs';
 import { resolveFile } from '../file';
 
-jest.mock('fs');
-
 describe('resolveFile()', () => {
   it('works', async () => {
-    ((readFile as unknown) as jest.Mock).mockImplementation((_, __, cb) => cb(undefined, 'root:*'));
-    await expect(resolveFile({ path: () => '/etc/passwd' } as URI)).resolves.toEqual('root:*');
+    const uri = new URI(path.join(__dirname, '__fixtures__/test.json'));
+    await expect(resolveFile(uri)).resolves.toMatch(/^{\}/);
   });
 
   it('handles failures', async () => {
-    ((readFile as unknown) as jest.Mock).mockImplementation((_, __, cb) => cb(new Error('Using shadow, ha, ha')));
-    await expect(resolveFile({ path: () => '/etc/passwd' } as URI)).rejects.toThrowError('Using shadow, ha, ha');
+    const uri = new URI(path.join(__dirname, '__fixtures__/baz.json'));
+    await expect(resolveFile(uri)).rejects.toThrowError();
   });
 });

src/file.ts

@@ -3,10 +3,13 @@ import * as URI from 'urijs';
 
 export function resolveFile(ref: URI) {
   return new Promise((resolve, reject) => {
-    const path = ref.path();
+    const path = ref.href();
     readFile(path, 'utf8', (err, data) => {
-      if (err) reject(err);
-      resolve(data);
+      if (err) {
+        reject(err);
+      } else {
+        resolve(data);
+      }
     });
   });
 }