always resolve schemaPath from next.js's root dir (#12)

Closes #118

Author: mfix-stripe

src/index.js

@@ -10,7 +10,10 @@ const withMarkdoc =
             options.defaultLoaders.babel,
             {
               loader: require.resolve('./loader'),
-              options: pluginOptions,
+              options: {
+                ...pluginOptions,
+                dir: options.dir,
+              },
             },
           ],
         });

src/loader.js

@@ -48,10 +48,13 @@ async function load(source) {
     preferRelative: true,
   });
 
-  const {mode = 'static', schemaPath = DEFAULT_SCHEMA_PATH} =
-    this.getOptions() || {};
+  const {
+    dir, // Root directory from Next.js (contains next.config.js)
+    mode = 'static',
+    schemaPath = DEFAULT_SCHEMA_PATH,
+  } = this.getOptions() || {};
 
-  const schemaDir = path.resolve(schemaPath || DEFAULT_SCHEMA_PATH);
+  const schemaDir = path.resolve(dir, schemaPath || DEFAULT_SCHEMA_PATH);
 
   // Grabs the path of the file relative to the `/pages` directory
   // to pass into the app props later.

tests/index.test.js

@@ -62,7 +62,10 @@ function options(config = {}) {
   const webpackThis = {
     context: __dirname,
     getOptions() {
-      return config;
+      return {
+        ...config,
+        dir: __dirname,
+      };
     },
     getLogger() {
       return console;
@@ -155,11 +158,11 @@ test('file output is correct', async () => {
 
 test.each([
   [undefined, undefined],
-  ['./tests/schemas/folders', 'markdoc1'],
-  ['./tests/schemas/folders/', 'markdoc1'],
-  ['./tests/schemas/files', 'markdoc2'],
-  ['tests/schemas/files', 'markdoc2'],
-  ['tests/schemas/typescript', source],
+  ['./schemas/folders', 'markdoc1'],
+  ['./schemas/folders/', 'markdoc1'],
+  ['./schemas/files', 'markdoc2'],
+  ['schemas/files', 'markdoc2'],
+  ['schemas/typescript', source],
 ])('Custom schema path ("%s")', async (schemaPath, expectedChild) => {
   const output = await callLoader(options({schemaPath}), source);
 
@@ -174,7 +177,7 @@ test.each([
 
 test('Partials', async () => {
   const output = await callLoader(
-    options({schemaPath: './tests/schemas/partials'}),
+    options({schemaPath: './schemas/partials'}),
     `${source}\n{% partial file="footer.md" /%}`
   );
 
@@ -186,7 +189,7 @@ test('Partials', async () => {
 
 test('Ejected config', async () => {
   const output = await callLoader(
-    options({schemaPath: './tests/schemas/ejectedConfig'}),
+    options({schemaPath: './schemas/ejectedConfig'}),
     `${source}\n{% $product %}`
   );