From 35ed18f628bcc54dd864c27a9f2ff626c0441134 Mon Sep 17 00:00:00 2001
From: Henry Zhu <hi@henryzoo.com>
Date: Sun, 28 Feb 2016 20:31:37 -0500
Subject: [PATCH] Fix invalid codegen for non decimal numeric literals in
 MemberExpression

Fixes T7156
---
 packages/babel-generator/src/generators/expressions.js     | 7 ++++++-
 .../edgecase/member-expression-numeric-literals/actual.js  | 5 +++++
 .../member-expression-numeric-literals/expected.js         | 5 +++++
 3 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 packages/babel-generator/test/fixtures/edgecase/member-expression-numeric-literals/actual.js
 create mode 100644 packages/babel-generator/test/fixtures/edgecase/member-expression-numeric-literals/expected.js

diff --git a/packages/babel-generator/src/generators/expressions.js b/packages/babel-generator/src/generators/expressions.js
index a58fe38e04..1f302a4342 100644
--- a/packages/babel-generator/src/generators/expressions.js
+++ b/packages/babel-generator/src/generators/expressions.js
@@ -8,6 +8,7 @@ import * as n from "../node";
 
 const SCIENTIFIC_NOTATION = /e/i;
 const ZERO_DECIMAL_INTEGER = /\.0+$/;
+const NON_DECIMAL_LITERAL = /^0[box]/;
 
 export function UnaryExpression(node: Object) {
   let needsSpace = /[a-z]$/.test(node.operator);
@@ -225,7 +226,11 @@ export function MemberExpression(node: Object) {
   } else {
     if (t.isNumericLiteral(node.object)) {
       let val = this.getPossibleRaw(node.object) || node.object.value;
-      if (isInteger(+val) && !SCIENTIFIC_NOTATION.test(val) && !ZERO_DECIMAL_INTEGER.test(val) && !this.endsWith(".")) {
+      if (isInteger(+val) &&
+        !NON_DECIMAL_LITERAL.test(val) &&
+        !SCIENTIFIC_NOTATION.test(val) &&
+        !ZERO_DECIMAL_INTEGER.test(val) &&
+        !this.endsWith(".")) {
         this.push(".");
       }
     }
diff --git a/packages/babel-generator/test/fixtures/edgecase/member-expression-numeric-literals/actual.js b/packages/babel-generator/test/fixtures/edgecase/member-expression-numeric-literals/actual.js
new file mode 100644
index 0000000000..747ba88e36
--- /dev/null
+++ b/packages/babel-generator/test/fixtures/edgecase/member-expression-numeric-literals/actual.js
@@ -0,0 +1,5 @@
+1..toString;
+2..toString();
+0x1F7.toString();
+0b111110111.toString();
+0o767.toString();
diff --git a/packages/babel-generator/test/fixtures/edgecase/member-expression-numeric-literals/expected.js b/packages/babel-generator/test/fixtures/edgecase/member-expression-numeric-literals/expected.js
new file mode 100644
index 0000000000..747ba88e36
--- /dev/null
+++ b/packages/babel-generator/test/fixtures/edgecase/member-expression-numeric-literals/expected.js
@@ -0,0 +1,5 @@
+1..toString;
+2..toString();
+0x1F7.toString();
+0b111110111.toString();
+0o767.toString();