From 222f1342a9c2a0f7f8219acab4e83122ffac4472 Mon Sep 17 00:00:00 2001
From: Takuto Wada <takuto.wada@gmail.com>
Date: Mon, 21 Mar 2016 04:35:24 +0900
Subject: [PATCH] refactor(babel-plugin-espower): inline slimDown function

make clone module unnecessary
---
 lib/babel-assertion-visitor.js | 36 ++++++++++++----------------------
 package.json                   |  1 -
 2 files changed, 13 insertions(+), 24 deletions(-)

diff --git a/lib/babel-assertion-visitor.js b/lib/babel-assertion-visitor.js
index 18682e6..8abd8da 100644
--- a/lib/babel-assertion-visitor.js
+++ b/lib/babel-assertion-visitor.js
@@ -7,7 +7,6 @@ var babelgen = require('babel-generator');
 var define = require('define-properties');
 var toBeCaptured = require('./to-be-captured');
 var toBeSkipped = require('./to-be-skipped');
-var clone = require('clone');
 var fs = require('fs');
 var helperCode = '(' +
   fs.readFileSync(require.resolve('./power-assert-recorder.js'), 'utf8')
@@ -192,7 +191,7 @@ BabelAssertionVisitor.prototype.parseCanonicalCode = function (file, code) {
     });
 
     return {
-        tokens: offsetTokens(tokens).map(slimDown),
+        tokens: offsetAndSlimDownTokens(tokens),
         expression: offsetTree
     };
 };
@@ -205,37 +204,28 @@ function wrappedInAsync (jsCode) {
     return 'async function wrapper() { ' + jsCode + ' }';
 }
 
-function offsetTokens (tokens) {
+function offsetAndSlimDownTokens (tokens) {
     var i, token, result = [];
     var columnOffset;
     for(i = 0; i < tokens.length; i += 1) {
-        token = clone(tokens[i]);
+        token = tokens[i];
         if (i === 0) {
             columnOffset = token.loc.start.column;
         }
-        token.range = [
-            token.loc.start.column - columnOffset,
-            token.loc.end.column - columnOffset
-        ];
-        delete token.loc;
-        result.push(token);
+        result.push({
+            type: {
+                label: token.type.label
+            },
+            value: token.value,
+            range: [
+                token.loc.start.column - columnOffset,
+                token.loc.end.column - columnOffset
+            ]
+        });
     }
     return result;
 }
 
-function slimDown (token) {
-    return {
-        type: {
-            label: token.type.label
-        },
-        value: token.value,
-        range: [
-            token.range[0],
-            token.range[1]
-        ]
-    };
-}
-
 BabelAssertionVisitor.prototype.captureArgument = function (node) {
     var t = this.babel.types;
     var props = {
diff --git a/package.json b/package.json
index 9fe2f3b..b4ccc0a 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,6 @@
     "babel-generator": "^6.1.0",
     "babylon": "^6.1.0",
     "call-matcher": "^0.1.0",
-    "clone": "^1.0.2",
     "define-properties": "^1.1.2",
     "espower-location-detector": "^0.1.1",
     "espurify": "^1.5.0",