Ron Buckton fcd9334f57 Add support for Optional Chaining (#33294) ... * Add support for Optional Chaining * Add grammar error for invalid tagged template, more tests * Prototype * PR feedback * Add errors for invalid assignments and a trailing '?.' * Add additional signature help test, fix lint warnings * Fix to insert text for completions * Add initial control-flow analysis for optional chains * PR Feedback and more tests * Update to control flow * Remove mangled smart quotes in comments * Fix lint, PR feedback * Updates to control flow * Switch to FlowCondition for CFA of optional chains * Fix ?. insertion for completions on type variables * Accept API baseline change * Clean up types * improve control-flow debug output * Revert Debug.formatControlFlowGraph helper		2019-09-30 12:33:28 -07:00
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arrayLiterals	Add tests	2019-06-17 16:18:13 -10:00
asOperator
assignmentOperator
binaryOperators	Fix #29457	2019-01-17 20:03:46 +00:00
commaOperator
conditonalOperator
contextualTyping	Fix incorrect noImplicitAny error on contextual union function signature	2019-06-24 17:37:14 -07:00
elementAccess
functionCalls	Add failing test for function calls that have at least one non-spread argument, a spread argument, and overall potentially too few arguments	2019-04-04 11:47:25 -07:00
functions
identifiers
literals
newOperator
objectLiterals
operators
optionalChaining	Add support for Optional Chaining (#33294)	2019-09-30 12:33:28 -07:00
propertyAccess	Add tests	2019-06-06 13:33:36 -07:00
superCalls
superPropertyAccess
thisKeyword	Add globalThis (#29332)	2019-02-27 14:14:34 -08:00
typeAssertions	allow const-assertion on aliased enum symbol (#32110)	2019-06-26 14:42:06 -07:00
typeGuards	Make anyArray.filter(Boolean) return any[], not unknown[] (#31515)	2019-05-22 09:45:41 -07:00
unaryOperators
valuesAndReferences