always coerce leading computed property initialisers into the init object - fixes #1820

test/core/fixtures/transformation/es6.properties.computed-loose/coerce/expected.js

@@ -0,0 +1,7 @@
+"use strict";
+
+var _obj;
+
+var obj = (_obj = {
+  foo: "bar"
+}, _obj[bar] = "foo", _obj);

test/core/fixtures/transformation/es6.properties.computed-loose/options.json

@@ -1,3 +1,4 @@
 {
+  "blacklist": ["es5.properties.mutators"],
   "loose": ["es6.properties.computed"]
 }

test/core/fixtures/transformation/es6.properties.computed-loose/two/actual.js

@@ -1,4 +1,4 @@
 var obj = {
   first: "first",
-  ["second"]: "second",
+  [second]: "second",
 };

test/core/fixtures/transformation/es6.properties.computed-loose/two/expected.js

@@ -2,4 +2,6 @@
 
 var _obj;
 
-var obj = (_obj = {}, _obj.first = "first", _obj["second"] = "second", _obj);
+var obj = (_obj = {
+  first: "first"
+}, _obj[second] = "second", _obj);