* Enable '--strictNullChecks'
* Fix API baselines
* Make sys.getEnvironmentVariable non-nullable
* make properties optional instead of using `| undefined` in thier type
* reportDiagnostics should be required
* Declare firstAccessor as non-nullable
* Make `some` a type guard
* Fix `getEnvironmentVariable` definition in tests
* Pretend transformFlags are always defined
* Fix one more use of sys.getEnvironmentVariable
* `requiredResponse` accepts undefined, remove assertions
* Mark optional properties as optional instead of using `| undefined`
* Mark optional properties as optional instead of using ` | undefined`
* Remove unnecessary null assertions
* Put the bang on the declaration instead of every use
* Make `createMapFromTemplate` require a parameter
* Mark `EmitResult.emittedFiles` and `EmitResult.sourceMaps` as optional
* Plumb through undefined in emitLsit and EmitExpressionList
* `ElementAccessExpression.argumentExpression` can not be `undefined`
* Add overloads for `writeTokenText`
* Make `shouldWriteSeparatingLineTerminator` argument non-nullable
* Make `synthesizedNodeStartsOnNewLine` argument required
* `PropertyAssignment.initializer` cannot be undefined
* Use one `!` at declaration site instead of on every use site
* Capture host in a constant and avoid null assertions
* Remove few more unused assertions
* Update baselines
* Use parameter defaults
* Update baselines
* Fix lint
* Make Symbol#valueDeclaration and Symbol#declarations non-optional to reduce assertions
* Make Node#symbol and Type#symbol non-optional to reduce assertions
* Make `flags` non-nullable to reduce assertions
* Convert some asserts to type guards
* Make `isNonLocalAlias` a type guard
* Add overload for `getSymbolOfNode` for `Declaration`
* Some more `getSymbolOfNode` changes
* Push undefined suppression into `typeToTypeNodeHelper`
* `NodeBuilderContext.tracker` is never `undefined`
* use `Debug.assertDefined`
* Remove unnecessary tag
* Mark `LiteralType.freshType` and `LiteralTupe.regularType` as required
* Support '.' as a trigger character
* Add a CompletionsTriggerCharacter type
* Add more trigger characters
* Add another type CompletionsTriggerCharacter
* Update API baselines
* When --noUnusedLocals/--noUnusedParameters is disabled, add suggestions instead of errors
* Improve performance: do not add unused suggestion diagnostics unless asking for a suggestion
* Add "unused" flag to diagnostics
* Code review
* reportsUnused -> reportsUnnecessary
* Fix test
* Support services settings
* Code review
* More review
* Use different names for Options and GetCompletionsAtPositionOptions (todo: come up with better names)
* More renames
* More renaming
* Support quote style in importFixes
* Add `importModuleSpecifierPreference` option
* Support quote style for `throw new Error('Method not implemented.')` (#18169)
* options -> preferences
In phase 1, it coalesces imports from the same module and sorts the
results, but does not remove unused imports.
Some trivia is lost during coalescing, but none should be duplicated.
* Support completions that require changing from dot to bracket access
* Use insertText and replacementSpan
* Rename includeBracketCompletions to includeInsertTextCompletions
* Don't add completions that start with space
* Support a "getCombinedCodeFix" service
* Rename things
* Code review
* Rename things
* Update API baselines
* CodeActionAll -> CombinedCodeActions
* Take a `scope` parameter instead of `fileName` for flexibility
* Renames and bugfixes
* Make API changes internal
* Code review
* Update comment
* For getCompletionsAtPosition, require a flag to provide completions with code actions
* Change name
* Increase API version
* Update API baselines
* Add comment
* Update API baseline
* Support multiple completions with the same name but different source module
* Use optional parameters for source
* Simplify use of `uniques`
* Update test
* Fix `undefined` error