Move functions coupled to TemplateInstance into own object

.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

lib/setup.js

@@ -12,6 +12,52 @@ function generateRequestKey(request) {
   return JSON.stringify(request);
 }
 
+export function graphQLClient(client, { templateInstance } = {}) {
+  return {
+    _gqlQueries: {},
+    _gqlQueriesDep: new Tracker.Dependency(),
+    gqlQuery(request, { equals } = {}) {
+      const obj = templateInstance || this;
+      const key = generateRequestKey(request);
+
+      if (!obj._gqlQueries[key]) {
+        obj._gqlQueries[key] = new ReactiveObserver(client.watchQuery(request), {
+          equals,
+        });
+        obj._gqlQueriesDep.changed();
+      }
+
+      return obj._gqlQueries[key];
+    },
+    queriesReady() {
+      const obj = templateInstance || this;
+      obj._gqlQueriesDep.depend();
+      return Object.keys(obj._gqlQueries).every(key => obj._gqlQueries[key].isReady());
+    },
+    gqlSubscribe(request) {
+      const obj = templateInstance || this;
+      const result = new ReactiveObserver(client.subscribe(request), {
+        equals() { return false; },
+      });
+
+      result._isReady.set(true);
+
+      const key = result._subscription._networkSubscriptionId;
+
+      obj._gqlQueries[key] = result;
+
+      return result;
+    },
+    gqlMutate(request) {
+      return client.mutate(request);
+    },
+    breakdown: () => {
+      Object.keys(graphQLClient._gqlQueries)
+        .forEach(key => graphQLClient._gqlQueries[key].unsubscribe());
+    },
+  };
+}
+
 function initTemplateQueries(template) {
   if (!template._gqlQueries) {
     // eslint-disable-next-line no-param-reassign
@@ -28,45 +74,21 @@ function initTemplateQueries(template) {
 export function setup({ client } = {}) {
   TemplateInstance.prototype.gqlQuery = function gqlQuery(request, { equals } = {}) {
     initTemplateQueries(this);
-
-    const key = generateRequestKey(request);
-
-    if (!this._gqlQueries[key]) {
-      this._gqlQueries[key] = new ReactiveObserver(client.watchQuery(request), {
-        equals,
-      });
-      this._gqlQueriesDep.changed();
-    }
-
-    return this._gqlQueries[key];
+    return graphQLClient(client, { templateInstance: this }).gqlQuery(request, { equals });
   };
 
   TemplateInstance.prototype.queriesReady = function queriesReady() {
     initTemplateQueries(this);
-
-    this._gqlQueriesDep.depend();
-
-    return Object.keys(this._gqlQueries).every(key => this._gqlQueries[key].isReady());
+    return graphQLClient(client, { templateInstance: this }).queriesReady();
   };
 
   TemplateInstance.prototype.gqlSubscribe = function gqlSubscribe(request) {
     initTemplateQueries(this);
-
-    const result = new ReactiveObserver(client.subscribe(request), {
-      equals() { return false; },
-    });
-
-    result._isReady.set(true);
-
-    const key = result._subscription._networkSubscriptionId;
-
-    this._gqlQueries[key] = result;
-
-    return result;
+    return graphQLClient(client, { templateInstance: this }).gqlSubscribe(request);
   };
 
   TemplateInstance.prototype.gqlMutate = function gqlMutate(request) {
-    return client.mutate(request);
+    return graphQLClient(client, { templateInstance: this }).gqlMutate(request);
   };
 
   Template.registerHelper('queriesReady', () => Template.instance().queriesReady());