Merge branch 'master' into use-conditionals-while-narrowing

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -0,0 +1,37 @@
+---
+name: Bug report
+about: Create a report to help us improve
+
+---
+
+<!-- 🚨 STOP 🚨 𝗦𝗧𝗢𝗣 🚨 𝑺𝑻𝑶𝑷 🚨
+
+Half of all issues filed here are duplicates, answered in the FAQ, or not appropriate for the bug tracker. Even if you think you've found a *bug*, please read the FAQ first, especially the Common "Bugs" That Aren't Bugs section!
+
+Please help us by doing the following steps before logging an issue:
+  * Search: https://github.com/Microsoft/TypeScript/search?type=Issues
+  * Read the FAQ: https://github.com/Microsoft/TypeScript/wiki/FAQ
+
+Please fill in the *entire* template below.
+-->
+
+<!-- Please try to reproduce the issue with `typescript@next`. It may have already been fixed. -->
+**TypeScript Version:**  2.9.0-dev.201xxxxx
+
+<!-- Search terms you tried before logging this (so others can find this issue more easily) -->
+**Search Terms:** 
+
+**Code**
+
+```ts
+// A *self-contained* demonstration of the problem follows...
+// Test this by running `tsc` on the command-line, rather than through another build tool such as Gulp, Webpack, etc.
+```
+
+**Expected behavior:**
+
+**Actual behavior:**
+
+**Playground Link:** <!-- A link to a TypeScript Playground "Share" link which demonstrates this behavior --> 
+
+**Related Issues:** <!-- Did you find other bugs that looked similar? -->

.github/ISSUE_TEMPLATE/Feature_request.md

@@ -0,0 +1,39 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+
+---
+
+<!-- 🚨 STOP 🚨 𝗦𝗧𝗢𝗣 🚨 𝑺𝑻𝑶𝑷 🚨
+
+Half of all issues filed here are duplicates, answered in the FAQ, or not appropriate for the bug tracker. Please read the FAQ first, especially the "Common Feature Requests" section.
+
+-->
+
+## Search Terms
+
+<!-- List of keywords you searched for before creating this issue. Write them down here so that others can find this suggestion more easily -->
+
+## Suggestion
+
+<!-- A summary of what you'd like to see added or changed -->
+
+## Use Cases
+
+<!--
+What do you want to use this for?
+What shortcomings exist with current approaches?
+-->
+
+## Examples
+
+<!-- Show how this would be used and what the behavior would be -->
+
+## Checklist
+
+My suggestion meets these guidelines:
+ [ ] This wouldn't be a breaking change in existing TypeScript / JavaScript code
+ [ ] This wouldn't change the runtime behavior of existing JavaScript code
+ [ ] This could be implemented without emitting different JS based on the types of the expressions
+ [ ] This isn't a runtime feature (e.g. new expression-level syntax)
+

.github/ISSUE_TEMPLATE/Question.md

@@ -0,0 +1,15 @@
+---
+name: Question
+about: The issue tracker is not for questions. Please use Stack Overflow or other resources for help writing TypeScript code.
+
+---
+
+THE ISSUE TRACKER IS NOT FOR QUESTIONS.
+
+DO NOT CREATE A NEW ISSUE TO ASK A QUESTION.
+
+IF YOU ARE HAVING PROBLEMS WITH YOUR TYPESCRIPT CODE, DO NOT ASK A QUESTION HERE.
+
+Tens of thousands of TypeScript questions have been asked and answered on StackOverflow; see https://stackoverflow.com/questions/tagged/typescript . You can ask questions there or on other websites.
+
+The only exception is if you have a question about *the TypeScript compiler API itself*. Please post a complete example of what you're trying to do and precisely describe what your question is.

issue_template.md → .github/issue_template.md

@@ -24,7 +24,7 @@ Please help us by doing the following steps before logging an issue:
 -->
 
 <!-- Please try to reproduce the issue with `typescript@next`. It may have already been fixed. -->
-**TypeScript Version:**  2.7.0-dev.201xxxxx
+**TypeScript Version:**  2.9.0-dev.201xxxxx
 
 <!-- Search terms you tried before logging this (so others can find this issue more easily) -->
 **Search Terms:** 

.gitmodules

@@ -18,3 +18,23 @@
 	path = tests/cases/user/TypeScript-WeChat-Starter/TypeScript-WeChat-Starter
 	url = https://github.com/Microsoft/TypeScript-WeChat-Starter.git
 	ignore = all
+[submodule "tests/cases/user/create-react-app/create-react-app"]
+	path = tests/cases/user/create-react-app/create-react-app
+	url = https://github.com/facebook/create-react-app.git
+	ignore = all
+[submodule "tests/cases/user/webpack/webpack"]
+	path = tests/cases/user/webpack/webpack 
+        url = https://github.com/webpack/webpack.git
+	ignore = all
+[submodule "tests/cases/user/puppeteer/puppeteer"]
+	path = tests/cases/user/puppeteer/puppeteer
+	url = https://github.com/GoogleChrome/puppeteer.git
+	ignore = all
+[submodule "tests/cases/user/axios-src/axios-src"]
+	path = tests/cases/user/axios-src/axios-src
+	url = https://github.com/axios/axios.git
+        ignore = all
+[submodule "tests/cases/user/prettier/prettier"]
+	path = tests/cases/user/prettier/prettier
+	url = https://github.com/prettier/prettier.git
+        ignore = all

.mailmap

@@ -316,4 +316,9 @@ Adnan Chowdhury  <bttf@users.noreply.github.com>
 Esakki Raj  <esakkiraj.tce@gmail.com>
 Jack Williams  <jw@jackw.io>
 Philippe Voinov  <philippevoinov@gmail.com>
-Stephan Ginthör  <26004708+Lazarus535@users.noreply.github.com>
+Stephan Ginthör  <26004708+Lazarus535@users.noreply.github.com>
+AdityaDaflapurkar  <adaflapurkar@gmail.com> # Aditya Daflapurkar
+Eric Grube  <grubee79@gmail.com>
+Martyn Janes  <martyn@obany.com>
+Ricardo N Feliciano  <FelicianoTech@gmail.com>
+Sergii Bezliudnyi  <serg.bezludny@gmail.com>

.npmignore

@@ -2,12 +2,10 @@ built
 doc
 Gulpfile.ts
 internal
-issue_template.md
 jenkins.sh
 lib/README.md
 lib/enu
 netci.groovy
-pull_request_template.md
 scripts
 src
 tests
@@ -24,3 +22,4 @@ Jakefile.js
 test.config
 package-lock.json
 yarn.lock
+.github/

.travis.yml

@@ -16,9 +16,8 @@ matrix:
 branches:
   only:
   - master
-  - release-2.5
-  - release-2.6
   - release-2.7
+  - release-2.8
 
 install:
   - npm uninstall typescript --no-save

.vscode/tasks.json

@@ -1,30 +1,34 @@
-// Available variables which can be used inside of strings.
-// ${workspaceRoot}: the root folder of the team
-// ${file}: the current opened file
-// ${fileBasename}: the current opened file's basename
-// ${fileDirname}: the current opened file's dirname
-// ${fileExtname}: the current opened file's extension
-// ${cwd}: the current working directory of the spawned process
 {
-    "version": "0.1.0",
-    "command": "gulp",
-    "isShellCommand": true,
-    "showOutput": "silent",
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
     "tasks": [
         {
-            "taskName": "local",
-            "isBuildCommand": true,
-            "showOutput": "silent",
-            "problemMatcher": [
-                "$tsc"
-            ]
+            "type": "shell",
+            "identifier": "local",
+            "label": "gulp: local",
+            "command": "gulp",
+            "args": ["local"],
+            "group": { "kind": "build", "isDefault": true },
+            "problemMatcher": ["$gulp-tsc"]
         },
         {
-            "taskName": "tests",
-            "showOutput": "silent",
-            "problemMatcher": [
-                "$tsc"
-            ]
+            "type": "shell",
+            "identifier": "tsc",
+            "label": "gulp: tsc",
+            "command": "gulp",
+            "args": ["tsc"],
+            "group": "build",
+            "problemMatcher": ["$gulp-tsc"]
+        },
+        {
+            "type": "shell",
+            "identifier": "tests",
+            "label": "gulp: tests",
+            "command": "gulp",
+            "args": ["tests"],
+            "group": "build",
+            "problemMatcher": ["$gulp-tsc"]
         }
     ]
 }

AUTHORS.md

@@ -3,6 +3,7 @@ TypeScript is authored by:
 * Abubaker Bashir
 * Adam Freidin
 * Adi Dahiya
+* Aditya Daflapurkar
 * Adnan Chowdhury 
 * Adrian Leonhard 
 * Ahmad Farid
@@ -85,6 +86,7 @@ TypeScript is authored by:
 * @e-cloud
 * Elisée Maurer
 * Emilio García-Pumarino
+* Eric Grube 
 * Eric Tsang
 * Erik Edrosa
 * Erik McClenney 
@@ -184,6 +186,7 @@ TypeScript is authored by:
 * Marius Schulz 
 * Martin Hiller 
 * Martin Vseticka
+* Martyn Janes 
 * Masahiro Wakame
 * Matt Bierner 
 * Matt McCutchen
@@ -237,6 +240,7 @@ TypeScript is authored by:
 * Raj Dosanjh
 * Reiner Dolp 
 * Remo H. Jansen 
+* Ricardo N Feliciano 
 * Richard Karmazín 
 * Richard Knoll
 * Richard Sentino
@@ -252,6 +256,7 @@ TypeScript is authored by:
 * Sean Barag 
 * Sergey Rubanov
 * Sergey Shandar 
+* Sergii Bezliudnyi 
 * Sharon Rolel 
 * Sheetal Nandi
 * Shengping Zhong