Merge branch 'master' into attach_property_to_default_export

Author: Kingwl

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -16,7 +16,7 @@ Please fill in the *entire* template below.
 -->
 
 <!-- Please try to reproduce the issue with `typescript@next`. It may have already been fixed. -->
-**TypeScript Version:**  3.3.0-dev.201xxxxx
+**TypeScript Version:**  3.4.0-dev.201xxxxx
 
 <!-- Search terms you tried before logging this (so others can find this issue more easily) -->
 **Search Terms:**

.github/pull_request_template.md

@@ -2,11 +2,9 @@
 Thank you for submitting a pull request!
 
 Here's a checklist you might find useful.
-* [ ] There is an associated issue that is labeled
-  'Bug' or 'help wanted' or is in the Community milestone
+* [ ] There is an associated issue that is labeled 'Bug' or 'help wanted'
 * [ ] Code is up-to-date with the `master` branch
-* [ ] You've successfully run `jake runtests` locally
-* [ ] You've signed the CLA
+* [ ] You've successfully run `gulp runtests` locally
 * [ ] There are new or updated unit tests validating the change
 
 Refer to CONTRIBUTING.MD for more details.

.mailmap

@@ -121,6 +121,7 @@ Ken Howard <ken@simplicatedweb.com>
 Kevin Lang  <klang2012@gmail.com>
 kimamula <kenji.imamula@gmail.com> # Kenji Imamula
 Kitson Kelly  <me@kitsonkelly.com>
+Krishnadas Babu <krishnadas100033@gmail.com>
 Klaus Meinhardt  <klaus.meinhardt1@gmail.com>
 Kyle Kelley <rgbkrk@gmail.com>
 Lorant Pinter <lorant.pinter@prezi.com>

.npmignore

@@ -12,7 +12,11 @@ tests
 tslint.json
 Jakefile.js
 .editorconfig
+.failed-tests
+.git
+.git/
 .gitattributes
+.github/
 .gitmodules
 .settings/
 .travis.yml
@@ -23,6 +27,5 @@ Jakefile.js
 test.config
 package-lock.json
 yarn.lock
-.github/
 CONTRIBUTING.md
 TEST-results.xml

.travis.yml

@@ -3,9 +3,7 @@ language: node_js
 node_js:
   - 'node'
   - '10'
-  - '6'
-
-sudo: false
+  - '8'
 
 env:
   - workerCount=3 timeout=600000

CONTRIBUTING.md

@@ -47,6 +47,16 @@ In general, things we find useful when reviewing suggestions are:
 
 # Instructions for Contributing Code
 
+## Tips
+
+### Faster clones
+
+The TypeScript repository is relatively large. To save some time, you might want to clone it without the repo's full history using `git clone --depth=1`.
+
+### Using local builds
+
+Run `gulp` to build a version of the compiler/language service that reflects changes you've made. You can then run `node <repo-root>/built/local/tsc.js` in place of `tsc` in your project. For example, to run `tsc --watch` from within the root of the repository on a file called `test.ts`, you can run `node ./built/local/tsc.js --watch test.ts`.
+
 ## Contributing bug fixes
 
 TypeScript is currently accepting contributions in the form of bug fixes. A bug must have an issue tracking it in the issue tracker that has been approved ("Milestone == Community") by the TypeScript team. Your pull request should include a link to the bug that you are fixing. If you've submitted a PR for a bug, please post a comment in the bug to avoid duplication of effort.
@@ -94,7 +104,7 @@ Any changes should be made to [src/lib](https://github.com/Microsoft/TypeScript/
 Library files in `built/local/` are updated automatically by running the standard build task:
 
 ```sh
-jake
+gulp
 ```
 
 The files in `lib/` are used to bootstrap compilation and usually **should not** be updated unless publishing a new version or updating the LKG.
@@ -105,49 +115,49 @@ The files `src/lib/dom.generated.d.ts` and `src/lib/webworker.generated.d.ts` bo
 
 ## Running the Tests
 
-To run all tests, invoke the `runtests-parallel` target using jake:
+To run all tests, invoke the `runtests-parallel` target using gulp:
 
 ```Shell
-jake runtests-parallel
+gulp runtests-parallel
 ```
 
 This will run all tests; to run only a specific subset of tests, use:
 
 ```Shell
-jake runtests tests=<regex>
+gulp runtests --tests=<regex>
 ```
 
 e.g. to run all compiler baseline tests:
 
 ```Shell
-jake runtests tests=compiler
+gulp runtests --tests=compiler
 ```
 
 or to run a specific test: `tests\cases\compiler\2dArrays.ts` 
 
 ```Shell
-jake runtests tests=2dArrays
+gulp runtests --tests=2dArrays
 ```
 
 ## Debugging the tests
 
-To debug the tests, invoke the `runtests-browser` task from jake.
+To debug the tests, invoke the `runtests-browser` task from gulp.
 You will probably only want to debug one test at a time:
 
 ```Shell
-jake runtests-browser tests=2dArrays
+gulp runtests-browser --tests=2dArrays
 ```
 
 You can specify which browser to use for debugging. Currently Chrome and IE are supported:
 
 ```Shell
-jake runtests-browser tests=2dArrays browser=chrome
+gulp runtests-browser --tests=2dArrays --browser=chrome
 ```
 
-You can debug with VS Code or Node instead with `jake runtests inspect=true`:
+You can debug with VS Code or Node instead with `gulp runtests --inspect=true`:
 
 ```Shell
-jake runtests tests=2dArrays inspect=true
+gulp runtests --tests=2dArrays --inspect=true
 ```
 
 ## Adding a Test
@@ -187,20 +197,20 @@ Compiler testcases generate baselines that track the emitted `.js`, the errors p
 When a change in the baselines is detected, the test will fail. To inspect changes vs the expected baselines, use
 
 ```Shell
-jake diff
+gulp diff
 ```
 
 After verifying that the changes in the baselines are correct, run
 
 ```Shell
-jake baseline-accept
+gulp baseline-accept
 ```
 
 to establish the new baselines as the desired behavior. This will change the files in `tests\baselines\reference`, which should be included as part of your commit. It's important to carefully validate changes in the baselines.
 
 ## Localization
 
 All strings the user may see are stored in [`diagnosticMessages.json`](./src/compiler/diagnosticMessages.json).
-If you make changes to it, run `jake generate-diagnostics` to push them to the `Diagnostic` interface in `diagnosticInformationMap.generated.ts`.
+If you make changes to it, run `gulp generate-diagnostics` to push them to the `Diagnostic` interface in `diagnosticInformationMap.generated.ts`.
 
 See [coding guidelines on diagnostic messages](https://github.com/Microsoft/TypeScript/wiki/Coding-guidelines#diagnostic-messages).