Added pretty-printed JSON stringification

>
> This enables databases to be efficiently diffed by Git by including them in a repo.

README.md

@@ -6,13 +6,27 @@ Uses [discohash](https://github.com/cris691/discohash) for hashing key values.
 
 **Around 550 source lines of code** (see stats folder)
 
-# get
+## features
+
+- Store any JSON-able object
+- Index on any property (only top-level properties)
+- Auto ID or custom ID
+- Diffable by git 
+- All records and indexes and table information is just JSON files
+- 1 file per record, 1 file per unique index value, 1 file per table info
+- 1 sub-directory per table, 1 sub-directory (nested inside table) per indexed property
+- ACID guarantee (as long as accessed by single node thread)
+- Can expand ACID to multi-threaded access with a request queue.
+
+All in all this makes the database easy to understand and inspect. As well as making the code easy to read and maintain.
+
+## get
 
 ```console
 npm i --save stubdb
 ```
 
-# api
+## api
 
 There's only a couple of handful of calls in this api: `config`, `dropTable`, `getIndexedTable`, `getTable`, `put`, `get`, `getAllMatchingKeysFromIndex` and `getAllMatchingRecordsFromIndex`
 

api.js

@@ -32,7 +32,7 @@ export function getTable(name) {
       name,
       createdAt: Date.now()
     };
-    fs.writeFileSync(tableBase, JSON.stringify(tableInfo));
+    fs.writeFileSync(tableBase, JSON.stringify(tableInfo,null,2));
   }
   return new Table(tableInfo);
 }
@@ -63,7 +63,7 @@ export function getIndexedTable(name, indexed_properties = []) {
           property_name: prop,
           createdAt: Date.now()
         };
-        fs.writeFileSync(indexInfoBase, JSON.stringify(indexInfo));
+        fs.writeFileSync(indexInfoBase, JSON.stringify(indexInfo,null,2));
       }
     }
 

table.js

@@ -27,7 +27,7 @@ export class Table {
   put(key, record, greenlights = null) {
     const keyHash = discohash(key).toString(16); 
     const keyFileName = path.resolve(this.base, `${keyHash}.json`);
-    const recordString = JSON.stringify(record);
+    const recordString = JSON.stringify(record,null,2);
 
     guardGreenLights(greenlights, {key, record, recordString});
 
@@ -168,7 +168,7 @@ function index(value, key, propIndex) {
 
     indexRecord[value64] = [...keysWithValue.keys()];
 
-    fs.writeFileSync(indexRecordFileName, JSON.stringify(indexRecord));
+    fs.writeFileSync(indexRecordFileName, JSON.stringify(indexRecord,null,2));
 
     indexUpdated = true;
   }
@@ -201,7 +201,7 @@ function deindex(value, key, propIndex) {
 
     indexRecord[value64] = [...keysWithValue.keys()];
 
-    fs.writeFileSync(indexRecordFileName, JSON.stringify(indexRecord));
+    fs.writeFileSync(indexRecordFileName, JSON.stringify(indexRecord,null,2));
 
     indexUpdated = true;
   }