feat(config): include config.syncpack of package.json

Closes #86

Author: JamieMason

README.md

@@ -310,6 +310,7 @@ tree in the following places:
   or `.syncpackrc.cjs` file
 - a `syncpack.config.js` or `syncpack.config.cjs` CommonJS module exporting an
   object
+- a `config.syncpack` property in `package.json`
 
 If you want to specify a path to a configuration file, overriding the discovered
 configuration file (if present), you can use the `--config` option.

src/lib/disk.ts

@@ -1,6 +1,13 @@
 import { cosmiconfigSync } from 'cosmiconfig';
-import { readFileSync, removeSync, writeFileSync } from 'fs-extra';
+import { isNonEmptyObject, isObject } from 'expect-more';
+import {
+  readFileSync,
+  removeSync,
+  writeFileSync,
+  readJsonSync,
+} from 'fs-extra';
 import { sync as globSync } from 'glob';
+import { join } from 'path';
 import { sync as readYamlSync } from 'read-yaml-file';
 import type { SyncpackConfig } from '../constants';
 import { CWD } from '../constants';
@@ -30,6 +37,11 @@ export const disk = {
     try {
       const result = configPath ? client.load(configPath) : client.search();
       if (result === null) {
+        const rcPath = join(CWD, 'package.json');
+        const pjson = readJsonSync(rcPath, { throws: false });
+        const rcConfig = pjson?.config?.syncpack;
+        console.log(rcConfig);
+        if (isNonEmptyObject(rcConfig)) return rcConfig;
         verbose('no config file found');
         return {};
       }