JavaScriptPlugins
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diff --git a/‎.travis.yml‎
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diff --git a/‎CONTRIBUTING.md‎
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diff --git a/‎Gulpfile.ts‎
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diff --git a/‎Jakefile.js‎
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diff --git a/‎issue_template.md‎
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@@ -58,6 +58,7 @@ internal/
 !tests/baselines/reference/project/nodeModules*/**/*
 .idea
 yarn.lock
+yarn-error.log
 .parallelperf.*
 tests/cases/user/*/package-lock.json
 tests/cases/user/*/node_modules/
 
@@ -2,24 +2,19 @@
 	path = tests/cases/user/TypeScript-React-Starter/TypeScript-React-Starter
 	url = https://github.com/Microsoft/TypeScript-React-Starter
 	ignore = all
-	shallow = true
 [submodule "tests/cases/user/TypeScript-Node-Starter/TypeScript-Node-Starter"]
 	path = tests/cases/user/TypeScript-Node-Starter/TypeScript-Node-Starter
 	url = https://github.com/Microsoft/TypeScript-Node-Starter.git
 	ignore = all
-	shallow = true
 [submodule "tests/cases/user/TypeScript-React-Native-Starter/TypeScript-React-Native-Starter"]
 	path = tests/cases/user/TypeScript-React-Native-Starter/TypeScript-React-Native-Starter
 	url = https://github.com/Microsoft/TypeScript-React-Native-Starter.git
 	ignore = all
-	shallow = true
 [submodule "tests/cases/user/TypeScript-Vue-Starter/TypeScript-Vue-Starter"]
 	path = tests/cases/user/TypeScript-Vue-Starter/TypeScript-Vue-Starter
 	url = https://github.com/Microsoft/TypeScript-Vue-Starter.git
 	ignore = all
-	shallow = true
 [submodule "tests/cases/user/TypeScript-WeChat-Starter/TypeScript-WeChat-Starter"]
 	path = tests/cases/user/TypeScript-WeChat-Starter/TypeScript-WeChat-Starter
 	url = https://github.com/Microsoft/TypeScript-WeChat-Starter.git
 	ignore = all
-	shallow = true
@@ -18,6 +18,7 @@ branches:
   - master
   - release-2.5
   - release-2.6
+  - release-2.7
 
 install:
   - npm uninstall typescript --no-save
 
@@ -8,7 +8,14 @@ Issues that ask questions answered in the FAQ will be closed without elaboration
 
 ## 2. Search for Duplicates
 
-[Search the existing issues](https://github.com/Microsoft/TypeScript/issues?utf8=%E2%9C%93&q=is%3Aissue) before logging a new one.
+[Search the existing issues](https://github.com/Microsoft/TypeScript/search?type=Issues) before logging a new one.
+
+Some search tips:
+ * *Don't* restrict your search to only open issues. An issue with a title similar to yours may have been closed as a duplicate of one with a less-findable title.
+ * Check for synonyms. For example, if your bug involves an interface, it likely also occurs with type aliases or classes.
+ * Search for the title of the issue you're about to log. This sounds obvious but 80% of the time this is sufficient to find a duplicate when one exists.
+ * Read more than the first page of results. Many bugs here use the same words so relevancy sorting is not particularly strong.
+ * If you have a crash, search for the first few topmost function names shown in the call stack.
 
 ## 3. Do you have a question?
 
@@ -183,3 +190,10 @@ jake 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`](./src/compiler/diagnosticInformationMap.generated.ts).
+
+See [coding guidelines on diagnostic messages](https://github.com/Microsoft/TypeScript/wiki/Coding-guidelines#diagnostic-messages).
@@ -150,7 +150,9 @@ const es2018LibrarySourceMap = es2018LibrarySource.map(source =>
     ({ target: "lib." + source, sources: ["header.d.ts", source] }));
 
 const esnextLibrarySource = [
-    "esnext.asynciterable.d.ts"
+    "esnext.asynciterable.d.ts",
+    "esnext.array.d.ts",
+    "esnext.promise.d.ts"
 ];
 
 const esnextLibrarySourceMap = esnextLibrarySource.map(source =>
@@ -679,14 +681,14 @@ function runConsoleTests(defaultReporter: string, runInParallel: boolean, done:
             workerCount = cmdLineOptions.workers;
         }
 
-        if (tests || runners || light || taskConfigsFolder) {
-            writeTestConfigFile(tests, runners, light, taskConfigsFolder, workerCount, stackTraceLimit);
-        }
-
         if (tests && tests.toLocaleLowerCase() === "rwc") {
             testTimeout = 400000;
         }
 
+        if (tests || runners || light || testTimeout || taskConfigsFolder) {
+            writeTestConfigFile(tests, runners, light, taskConfigsFolder, workerCount, stackTraceLimit, testTimeout);
+        }
+
         const colors = cmdLineOptions.colors;
         const reporter = cmdLineOptions.reporter || defaultReporter;
 
@@ -871,8 +873,17 @@ function cleanTestDirs(done: (e?: any) => void) {
 }
 
 // used to pass data from jake command line directly to run.js
-function writeTestConfigFile(tests: string, runners: string, light: boolean, taskConfigsFolder?: string, workerCount?: number, stackTraceLimit?: string) {
-    const testConfigContents = JSON.stringify({ test: tests ? [tests] : undefined, runner: runners ? runners.split(",") : undefined, light, workerCount, stackTraceLimit, taskConfigsFolder, noColor: !cmdLineOptions.colors });
+function writeTestConfigFile(tests: string, runners: string, light: boolean, taskConfigsFolder?: string, workerCount?: number, stackTraceLimit?: string, timeout?: number) {
+    const testConfigContents = JSON.stringify({
+        test: tests ? [tests] : undefined,
+        runner: runners ? runners.split(",") : undefined,
+        light,
+        workerCount,
+        stackTraceLimit,
+        taskConfigsFolder,
+        noColor: !cmdLineOptions.colors,
+        timeout,
+    });
     console.log("Running tests with config: " + testConfigContents);
     fs.writeFileSync("test.config", testConfigContents);
 }
 
@@ -130,6 +130,7 @@ var harnessSources = harnessCoreSources.concat([
     "textStorage.ts",
     "moduleResolution.ts",
     "tsconfigParsing.ts",
+    "asserts.ts",
     "builder.ts",
     "commandLineParsing.ts",
     "configurationExtension.ts",
@@ -212,7 +213,9 @@ var es2018LibrarySourceMap = es2018LibrarySource.map(function (source) {
 });
 
 var esnextLibrarySource = [
-    "esnext.asynciterable.d.ts"
+    "esnext.asynciterable.d.ts",
+    "esnext.array.d.ts",
+    "esnext.promise.d.ts"
 ];
 
 var esnextLibrarySourceMap = esnextLibrarySource.map(function (source) {
@@ -795,7 +798,7 @@ compileFile(
     /*prereqs*/[builtLocalDirectory, tscFile, tsserverLibraryFile].concat(libraryTargets).concat(servicesSources).concat(harnessSources),
     /*prefixes*/[],
     /*useBuiltCompiler:*/ true,
-    /*opts*/ { types: ["node", "mocha"], lib: "es6" });
+    /*opts*/ { types: ["node", "mocha", "chai"], lib: "es6" });
 
 var internalTests = "internal/";
 
@@ -856,15 +859,16 @@ function cleanTestDirs() {
 }
 
 // used to pass data from jake command line directly to run.js
-function writeTestConfigFile(tests, runners, light, taskConfigsFolder, workerCount, stackTraceLimit, colors) {
+function writeTestConfigFile(tests, runners, light, taskConfigsFolder, workerCount, stackTraceLimit, colors, testTimeout) {
     var testConfigContents = JSON.stringify({
         runners: runners ? runners.split(",") : undefined,
         test: tests ? [tests] : undefined,
         light: light,
         workerCount: workerCount,
         taskConfigsFolder: taskConfigsFolder,
         stackTraceLimit: stackTraceLimit,
-        noColor: !colors
+        noColor: !colors,
+        timeout: testTimeout
     });
     fs.writeFileSync('test.config', testConfigContents);
 }
@@ -906,14 +910,14 @@ function runConsoleTests(defaultReporter, runInParallel) {
         workerCount = process.env.workerCount || process.env.p || os.cpus().length;
     }
 
-    if (tests || runners || light || taskConfigsFolder) {
-        writeTestConfigFile(tests, runners, light, taskConfigsFolder, workerCount, stackTraceLimit, colors);
-    }
-
     if (tests && tests.toLocaleLowerCase() === "rwc") {
         testTimeout = 800000;
     }
 
+    if (tests || runners || light || testTimeout || taskConfigsFolder) {
+        writeTestConfigFile(tests, runners, light, taskConfigsFolder, workerCount, stackTraceLimit, colors, testTimeout);
+    }
+
     var colorsFlag = process.env.color || process.env.colors;
     var colors = colorsFlag !== "false" && colorsFlag !== "0";
     var reporter = process.env.reporter || process.env.r || defaultReporter;
@@ -1200,6 +1204,7 @@ var tslintRules = [
     "debugAssertRule",
     "nextLineRule",
     "noBomRule",
+    "noDoubleSpaceRule",
     "noIncrementDecrementRule",
     "noInOperatorRule",
     "noTypeAssertionWhitespaceRule",
 
@@ -15,3 +15,5 @@
 **Expected behavior:**
 
 **Actual behavior:**
+
+**Related:**