feat: 초기 프로젝트 설정 및 룰.md 파일 추가

api.hyungi.net/node_modules/js-git/mixins/mem-cache.js

@@ -0,0 +1,53 @@
+"use strict";
+
+var encoders = require('../lib/object-codec').encoders;
+var decoders = require('../lib/object-codec').decoders;
+var Binary = require('bodec').Binary;
+
+var cache = memCache.cache = {};
+module.exports = memCache;
+
+function memCache(repo) {
+  var loadAs = repo.loadAs;
+  repo.loadAs = loadAsCached;
+  function loadAsCached(type, hash, callback) {
+    if (!callback) return loadAsCached.bind(this, type, hash);
+    if (hash in cache) return callback(null, dupe(type, cache[hash]), hash);
+    loadAs.call(repo, type, hash, function (err, value) {
+      if (value === undefined) return callback(err);
+      if (type !== "blob" || value.length < 100) {
+        cache[hash] = dupe(type, value);
+      }
+      return callback.apply(this, arguments);
+    });
+  }
+
+  var saveAs = repo.saveAs;
+  repo.saveAs = saveAsCached;
+  function saveAsCached(type, value, callback) {
+    if (!callback) return saveAsCached.bind(this, type, value);
+    value = dupe(type, value);
+    saveAs.call(repo, type, value, function (err, hash) {
+      if (err) return callback(err);
+      if (type !== "blob" || value.length < 100) {
+        cache[hash] = value;
+      }
+      return callback(null, hash, value);
+    });
+  }
+}
+function dupe(type, value) {
+  if (type === "blob") {
+    if (type.length >= 100) return value;
+    return new Binary(value);
+  }
+  return decoders[type](encoders[type](value));
+}
+
+function deepFreeze(obj) {
+  Object.freeze(obj);
+  Object.keys(obj).forEach(function (key) {
+    var value = obj[key];
+    if (typeof value === "object") deepFreeze(value);
+  });
+}