* Support xml namespace prefix for JSX elements and attributes
Just as with the `-` character, `:` is now also treated specially in JSX
element and attribute names, but is only allowed a single time, and not
at the beginning or end of the name, as is specified in the JSX spec.
All tests in jsxInvalidEsprimaTestSuite still fail, but for slightly
different reasons now. Two lines in jsxEsprimaFbTestSuite were
uncommented as they included elements with namespaces, and they now pass
without error.
* Add case for colons at ends of identifier
* Add case for jsx namepsace intrinsics
* Add cases with upcase idents for jsx namespaces
* Add case for jsx namespaces with react option
* Always consider jsx names with colon to be intrinsics
* Adjust comment about chars valid in jsx names but not js idents
* Fix minor typo in namespace prefix test case variable name
* Remove misleading comments on isUnhyphenatedJsxName
* Initial implementation of string template types
* Accept new API baselines
* Accept new baselines
* Unified checking for large cross product union types
* Accept new baselines
* Ensure errors from union type resolution are reported
* Accept new baselines
* Compute constraints for string template types
* Support `as T` clause in mapped types
* Accept new API baselines
* Add missing semicolon
* Add checking of `as T` clauses
* Support casing modifiers in string template types
* Accept new baselines
* Bump keyword maximum length
* fix anders
* Revert "fix anders"
This reverts commit b3178d46184c068b7b83008ad98a52faac1e8a34.
* Properly handle 'as T' clause with keyof for mapped type
* Fix lint error
* Single character inferences and anchored end span matching
* Fewer array copy operations in template literal type resolution
* Handle cases where 'as T' maps multiple properties onto one
* Fix lint error
* Store key type instead of type mapper in MappedSymbol
* No constraint on `in T` type when `as N` clause present
* Rename from TemplateType to TemplateLiteralType
* Accept new API baselines
* Add tests
* Accept new baselines
* Address CR feedback
* Accept new API baselines
Co-authored-by: Erich Gamma <egamma@microsoft.com>
* Parse *= separately in types
Previously, when the scanner produced `*=` as a single token, the type
parser ran special-case code to produce an "optional all type", which
only makes sense when the `=` really should be attached to the `*`. This
is often not the case.
The correct solution, which I missed when I first wrote this code, is to
have the scanner go back and produce a separate `=` token, which is what
this PR does.
* add test from #38551
* we ❤️ semicolons
* JSDoc uses same newlines as normal scanner
Previously, scanJsDocToken treated each newline character separately, so
the sequence \r\n would be treated as two lines. This is unexpected, and
not the way the normal scanner does it.
This change makes the jsdoc scanner behave the same as the normal
scanner.
* fix lint in test
* Add full implemention of Map and Set to shims
* Update default Map interface
* Remove WeakMap/WeakSet
* Add tests for set shim
* Update most usages of Map<K, true> to Set
* PR Feedback
* Fix lint issues
* Change key in fsWatchCallback
* Simpler shim, more tests
* Fix typo in collection shim
* Refactor node factory API, use node factory in parser
* Move UnparsedSource nodes to factory
* Make most Node properties read-only
* Make pos/end/parent and JSDoc 'comment' read-only
* Update function/constructor-type factories
* Remove treeStateObserver
* Simplify Debug.deprecate
* Remove unused factory methods, simplify lazy factory methods
* Fix base factory used for source file updates
* Update test baseline due to merge from master
* Rename factory methods to be more consistent (#39058)
* Allowed comment directives to be multiline
* Added tests, and perhaps fixed a test runner bug?
* I think it's going to need a consistent variable to loop over
* Used dynamically computed indexes in verifies
* Added multiline tests
* Increased flexibility for multiline comment parsing
* Undid a couple of formatting changes; removed backslashes from multiline regexp
* Added baseline tests for multiline comment skipping
Co-authored-by: Orta Therox <orta.therox@gmail.com>
* fix: hyphened name not auto-completed by the ls
* fix: accept new baseline
* Adds a test to validate the hypened identifiers in JSX
Co-authored-by: Orta Therox <orta.therox@gmail.com>
* Add the 'awaited' type operator
* Add script to manually add reviewers to a PR when GH 'Suggested Reviewers' breaks
* Fix lint error in review script
* Only defer generic awaited type for possible thenable
* Add variance-like behavior for awaited
* Switch awaited type params to 'unreliable' variance
* fix typo in inferTypes
* LKG without syntax in lib
* LKG with new syntax in lib
* Add 'strictAwaitedTypes' flag
* Treat strictAwaitedTypes as strict-mode flag
* Rename TAll, remove duplicate definition of 'race'
* Apply suggestions from code review
Co-Authored-By: ExE Boss <3889017+ExE-Boss@users.noreply.github.com>
* Fix inference priority
* Update comment to isGenericAwaitableType
* Add overloads for then/catch to Promise
* Add inference heuristic for T | PromiseLike<T> (for any PromiseLike)
* Remove strictAwaitedTypes flag
Co-authored-by: ExE Boss <3889017+ExE-Boss@users.noreply.github.com>
* Allow emitter to write multiple newlines in node lists
* Progress
* Progress
* Fix recomputeIndentation
* Add tests, fix leading line terminator count
* Do a bit less work when `preserveNewlines` is off
* Fix accidental find/replace rename
* Restore some monomorphism
* Fix single line writer
* Fix other writers
* Revert "Fix other writers"
This reverts commit 21b0cb8f3beb6915eb969e4924ce0ad4b1645876.
* Revert "Fix single line writer"
This reverts commit e535e279f99a423aab44dca8eca46f46669d045f.
* Revert "Restore some monomorphism"
This reverts commit e3ef42743a99333a15d3cb357125c67aa13f2d03.
* Add equal position optimization to getLinesBetweenRangeEndAndRangeStart
* Add one more test
* Actually save the test file
* Rename preserveNewlines to preserveSourceNewlines
* Make ignoreSourceNewlines internal
* Optimize lines-between functions
* Add comment;
* Fix trailing line terminator count bug for function parameters
* Preserve newlines around parenthesized expressions
* Back to speculative microoptimizations, yay
* Don’t call getEffectiveLines during tsc emit at all
* Added @ts-expect-error to @ts-ignore directives
Similar to `// @ts-ignore`, but will itself cause a new error diagnostic if it does not cause an existing diagnostic to be ignored.
Technical summary:
1. The scanner will now keep track of `CommentDirective`s it comes across: both `@ts-expect-error` and `@ts-ignore`
2. During type checking, the program will turn those directives into a map keying them by line number
3. For each diagnostic, if it's preceded by a directive, that directive is marked as "used"
4. All `@ts-expect-error` directives not marked as used generate a new diagnostic error
* Renamed to getDiagnosticsWithPrecedingDirectives per suggestion
* Added JSDoc comment I thought I did already
Co-authored-by: Orta <orta.therox+github@gmail.com>
* WIP on making the JSX text node not include whitespace
* Scans to the last newline for JSX correctly
* Handle JSX closing element wrapping
* Offload all jsx text indentation handling to indentMultilineCommentOrJsxText
* Switch from find node -> find inde in formatting
Co-authored-by: Wesley Wigham <wwigham@gmail.com>
Handle private identifiers little better by creating token for private identifier when its just #
Report same error as invalid character but from language service we can now provide completions for this.#
Fixes#36367, #36250
* Fix display of private names in language server
Signed-off-by: Joseph Watts <jwatts43@bloomberg.net>
Signed-off-by: Max Heiber <max.heiber@gmail.com>
* Parse private names
Signed-off-by: Max Heiber <max.heiber@gmail.com>
* update parser error recovery tests to use ¬ not #
The intent of the tests seemed to be to
regiment the behavior of the parser
when a weird symbol is encountered.
The `#` is now taken by private identifiers,
so `¬` seems like a good new choice for
keeping the diff small, since it also fits in
16 bits (wide emojis would be treated
as multiple characters, since the scanner
uses ++).
Signed-off-by: Max Heiber <max.heiber@gmail.com>
* Private Name Support in the Checker (#5)
- [x] treat private names as unique:
- case 1: cannot say that a variable is of a class type unless the variable points to an instance of the class
- see [test](https://github.com/mheiber/TypeScript/tree/checker/tests/cases/conformance/classes/members/privateNames/privateNamesUnique.ts)
- case 2: private names in class hierarchies do not conflict
- see [test](https://github.com/mheiber/TypeScript/tree/checker/tests/cases/conformance/classes/members/privateNames/privateNamesNoConflictWhenInheriting.ts)
- [x] `#constructor` is reserved
- see [test](https://github.com/mheiber/TypeScript/tree/checker/tests/cases/conformance/classes/members/privateNames/privateNameConstructorReserved.ts)
- check in `bindWorker`, where every node is visited
- [x] Accessibility modifiers can't be used with private names
- see [test](https://github.com/mheiber/TypeScript/tree/checker/tests/cases/conformance/classes/members/privateNames/privateNamesNoAccessibilityModifiers.ts)
- implemented in `checkAccessibilityModifiers`, using `ModifierFlags.AccessibilityModifier`
- [x] `delete #foo` not allowed
- [x] Private name accesses not allowed outside of the defining class
- see test: https://github.com/mheiber/TypeScript/tree/checker/tests/cases/conformance/classes/members/privateNames/privateNameNotAccessibleOutsideDefiningClass.ts
- see [test](https://github.com/mheiber/TypeScript/tree/checker/tests/cases/conformance/classes/members/privateNames/privateNamesNoDelete.ts)
- implemented in `checkDeleteExpression`
- [x] Do [the right thing](https://gist.github.com/mheiber/b6fc7adb426c2e1cdaceb5d7786fc630) for nested classes
mv private name tests together
more checker tests for private names
update naming and cleanup for check private names
for private name support in the checker:
- make names more consistent
- remove unnecessary checks
- add utility function to public API
- other small cleanup
Move getPropertyNameForUniqueESSymbol to utility
for consistency with other calculation of
special property names (starting with __),
move the calculation of property names for
unique es symbols to `utilities.ts`.
private name tests strict+es6
Update private name tests to use 'strict'
type checking and to target es6 instead of
default. Makes the js output easier to read
and tests more surface area with other
checker features.
error message for private names in obj literals
Disallow decorating private-named properties
because the spec is still in flux.
Signed-off-by: Max Heiber <max.heiber@gmail.com>
* Add private instance field transformation, pr feedback
Implements private instance fields on top of the class properties refactor.
This commit also includes incorporation of PR feedback on the
checker, parser, and transformer in order to make the rebase
manageable.
Co-Authored-By: Max Heiber <max.heiber@gmail.com>
Co-Authored-By: Ron Buckton <ron.buckton@microsoft.com>
Signed-off-by: Joey Watts <jwatts43@bloomberg.net>
Signed-off-by: Max Heiber <max.heiber@gmail.com>
Incorporate PR feedback
Fix checker crash with new block scoped bindings
Add classExpressionInLoop test
Update baselines for private name errors
Apply suggestions from code review
Fix privateNameFieldCallExpression test
Remove unnecessary comment
Fix PropertyAccessEntityNameExpression type
Remove PrivateName from PropertyNameLiteral
Add createPrivateName
Remove PrivateName type from textSourceNode
Add Debug asserts for invalid syntax kinds
Don't output private name syntax when undeclared
Make PrivateName extend Node
Update baselines for public API
Fix completions in language server
Fix fourslash test crash
intern private name descriptions
undo expensive node.name.parent assignment
Back the way things were on `master`: only
assign node.name.parent when we need to
Add tests for private names and JSDoc
Patch hoverOverPrivateName fourslash test
Fix goToDefinition for private-named fields
remove Debug.fail for private name outside class
Remove Debug.fail in binder.ts::`getDeclarationName`.
It turns out this code path *does* get hit (intentionally).
For best error messages, return `undefined` and rely
on the parser generating a good error message
"Private names are not allowed outside class bodies"
Add rbuckton test cases for private names
These test cases specifically exercise where
we needed to use name-mangling. They are
cases where private names have the same
description.
- private names no conflict when inheriting
- private names distinct even when
the two classes have the same name
check dup instance+static private identifiers
class A {
#foo;
static #foo;
}
not allowed because static and private names
share the same lexical scope
https://tc39.es/proposal-class-fields/#prod-ClassBody
refactor getPropertyForPrivateName, rel spans
refactor getPropertyForPrivateName so
it is easier to read (use findAncestor instead
of loop).
Fix bugs in getPropertyForPrivateName:
- make it work with deeply-nested classes with
and without shadowing
- make it catch shadowing when the conflict is
between static and instance
private name descriptions (these can actually
clash)
And add related spans to diagnostics
for getPropertyForPrivateName
catch conflicts between static and instance
private identifiers:
- cannot have an instance and static private identifier
with the same spelling, as there is only one namespace
for private names
rename 'PrivateName' to 'PrivateIdentifier'
to match the change of wording in the spec
prposal:
https://tc39.es/proposal-class-fields/#sec-syntax
The rename in the spec was to avoid confusion
between the AST Node PrivateIdentifier
and the internal spec type PrivateName.
So one uses the [[Description]] of a
PrivateIdentifier to look up the PrivateName
for a given scope.
This corresponds closely to our implementation
in the binder and checker:
- we mangle PrivateIdentifier.escapedText to
get a `key` which we use to get the symbol
for a property
f
getLiteralTypeFromProperty-check privateIdentifier
rename and simplify privateNameAndAny test case
make it clearer that all this test is showing is
that we allow accessing arbitrary private identifiers
on `any`.
Note: we could have something more sound here by
checking that there is a private-named field declaration
in a class scope above the property access.
Discussion:
https://github.com/microsoft/TypeScript/pull/30829/files#r302760015
Fix typo in checker
s/identifer/identifier
remove accidental change
patch fourslash test broken by isPrivateIdentifier
just needed to add a check to see if the symbol
.name is defined
extract reportUnmatchedProperty
per @nsandersn feedback
propertiesRelatedTo was getting to long
pull out the unmatchedProperty reporting into
a seprate function
fix typo in private names test
Fix type soundness with private names
Remove PrivateIdentifier from emit with Expr hint
Fixup helpers and set function name for privates
remove accidentally-committed baselines
These baselines somehow ended up in this pr,
though they have nothing to do with the changes
Revert "getLiteralTypeFromProperty-check privateIdentifier"
This reverts commit bd1155c300bc3517a0543580f4790268f86e473f.
reason: the check for isIdentifier in
getLiteralTypeFromProperty is superfluous because
we do this check in getLiteralTypeFromPropertyName
Update comment in private name uniqueness test 3
I think the comments were not accurate and that we
export the error on `this.#x = child.#x` because:
- private names are lexically scoped: the code in question is not in a
lexical scope under the definition of Child's #x.
- private names are private to their containing class: never inherited
This expected behavior matches that of Chrome Canary and
my understanding of the spec
test private names use before def, circular ref
test private names use before def, circular ref
update diagnosticMessages s/delete/'delete'
per @DanielRosenwasser and @sandersn guidance,
use this style in diagnostic messages:
"operand of a 'delete' operator" (single quotes)
rather than old style:
"operand of a delete operator" (single quotes)
This is for consistency, as we use the new
style in the privateIdentifiers error messages
and it is consistent with our messages about
other operators
incorporate private names early exit feedback
and code style change to use a ternary
instead of if so we can 'const'
require private-named fields to be declared in JS
All fields must be declared in TS files.
In JS files, we typically do not have this requirement.
So special-case private fields, which must always
be declared (even in JS files, per spec)
update debug failure for es2015 private identifier
Co-Authored-By: Ron Buckton <ron.buckton@microsoft.com>
fix checker handling of private name in subclasse
update checker and tests to account for the
following ts features:
- private names do not participate in
the prototype chain, but *are* assigned
in the parent class' constructor. So
parent can access its *own* private fields
on instances of the subclass
Add more tests for private-named fields in JS
add test to hit symbolToExpression w private names
symbolToExpression knows about private names
add a test to exercise this code path
ban private-named static methods (not supported yet)
ban private-named methods (not supported yet)
ban private-named accessors (not supported yet)
fix privateIdentifier fourslash test
change assertion throw to return
Co-Authored-By: Ron Buckton <ron.buckton@microsoft.com>
Update comment in checker.ts re reserved members
Remove case for privateIdentifier in EntityNameExpr
Remove case for privateIdentifier in
EntityNameExpr. That code path is never hit,
and privateIdnetifiers cannot be entity names.
remove unnecessary parentheses
Ban private identifier in enum
As the new test, 'privateNameEnumNoEmit',
shows, the checker now correctly makes
a diagnostic for private identifiers in enums.
However, when noEmit is false we
hit this assertion in the transformer.
This assertion will have to be removed
so that we have a diagnostic here instead
of an assertion error.
When the assertion is removed,
the 'privateNameEnum' baseline
will have to be updated
Fix destructuring assignment, use createCallBinding, remove unneeded helper
Add class private field helpers to external helpers
Remove private identifier enum assertion, use missing identifiers
Fix hash map inefficiency by only using get
Update baselines with empty identifier change
Add privateNameEnum test baselines
Fix private identifier destructuring (array assignment defaults, unique names)
Use createPrivateIdentifierAssignment in destructuring transform
Fix lint error
Separate destructuring target visitor from regular visitor
Fix destructuring assignment with this bindings
Fix destructuring assignment with this bindings
Fix syntax error with destructuring assignment output
Disallow private identifiers in property signatures
remove duplicate test baselines
Add tests for undeclarated private identifiers
remove unnecessary cast
Nicer error message for mis-placed hashbang
Workaround v8 bug with destructured assignments
Optimize private identifier stack lookup
Avoid the cost of performing an array lookup to look at the top of the
private identifier environment stack.
Change function name to be more specific
Changes "getOperatorForCompoundAssignment" to
"getNonAssignmentOperatorForCompoundAssignment" now that this
function is accessible to the entire compiler.
Improve test case for private name assignment
Adds a compound assignment test case for a class with private names
being declared on the left-hand-side of the assignment expression.
Remove extra non-private-field test
Remove isPrivateIdentifierAssignmentExpression helper
Don't transform private names in ESNext target
Preserve private fields initialized to functions
Move function expressions to outer scope for efficiency
Add WeakMap collision check
Modify potential WeakMap collision condition
Fix this property assignment binding with private names
Add correct error message for WeakMap collision
Add error for statements before super with private identifiers
Refactor getPropertyForPrivateIdentifier
Add test for private identifier fields initialized to class exprs
Fix shebang errors
Fix private errors on index signatures
Add codefix for missing private property
Update error messages for unsupported private features
Fix inheritance-related errors
Fixes inheritance-related errors with private identifiers by resolving
properties from base classes. Private identifiers do not show up as
properties on a union type, so those do not type-check.
Add test for interface extending class with private access
Remove debugging log
Remove name assignment from private named functions
Rename to getPrivateIdentifierPropertyOfType
Fix index signature test comment
Fix test target syntax error
Change error messages
patch private identifiers outside class bodies
Add test for private identifier with ooo super
Add test for a class with a private identifier
with a non-preambly (for example, not a comment)
statement before 'super':
should error, saying 'super' must come first
Fix nits
incorporate PR feedback
Incorporate checker feedback
- reorganize if statements in checkFunctionOrConstructorSymbol
- remove overload for getPrivateIdentifierPropertyOfType
reorganize if statements in checkFunctionOrConstructorSymbol
test for private names with JSX
use getPropertyOftype in getPropertyForPrivateIdentifier
getPrivateIdentifierPropertyOfType error on synthetic
make getPrivateIdentifierPropertyOfType error
if given a node that is not from the parse tree
Simplify checkPrivateIdentifierPropertyAccess
use getPropertiesOfType instead of
rehashing that logic
test for private identifiers w decl merging
fix test target for privateNameDeclarationMerging
update baselines
Fix private identifier ++/-- numeric coercion
Remove 'downleveled' from super error
Fix bad comments in helper call emit
Error on private identifiers in JSX tag names
Add more private identifier tests
Add es2015 target for private name destructured binding test
Add privateNameConstructorSignature test
Add test for navigation bar w private identifier
Remove spurious line from test
// in js file
class A {
exports.#foo = 3; // should error
}
The above line failed to produce an error
when run using the test harness.
When using tsc or the language server,
we got the expected error message.
Removing the troublesome line, as it
seems to say more about the test runner
than about the code it is testing.
Fix inefficient constructor generation
dts: don't emit type for private-identified field
Do not emit types for private-identified fields
when generating declaration files.
// example.ts
export class A {
#foo: number;
}
// example.d.ts
export declare class A {
#foo;
}
**This is not ideal!**
The following would be better:
// example.d.ts
export declare unique class A {
#foo;
}
See discussion:
https://github.com/microsoft/TypeScript/pull/33038#issuecomment-530321165
notice when private-identified field unused
Notice when private-identified fields are unused,
and implement the same behavior as for unused
private-modified fields.
This is used in the language server to make things
grayed out.
This case generates an error when --noUnusedLocals
flag is passed to tsc:
- "<name> is declared but never used"
accept baselines
Revert "dts: don't emit type for private-identified field"
This reverts commit e50305df5fb88121486291abad14478f5339a455.
Instead of just excluding the type from private identifier
emit, only emit a single private identifier
per class.
This accomplishes nominality while
hiding implementation detail that
is irrelevant to .d.ts consumers
only emit a single private identifier in dts
In dts emit, emit at most one private identifier,
and rename it to `#private`.
refactor getPrivateIdentifierPropertyOfType
- safer check for wehther is parse tree node
- return undefined when not found (instead of
a Debug.fail)
Incorporate PR feedback
Don't rely on parent pointers in transform
Passes context about whether the postfix unary expression value is
discarded down the tree into the visitPostfixUnaryExpression function.
Remove orphaned test baseline files
remove unreachable if
Check `any`-typed private identified fields
Update private identifier incompatible modifier checks
- disallow 'abstract' with private identifiers
- s/private-named-property/private identifier
Add additional call expression test cases
Fix disallow 'abstract' with private identifier
Static private identifiers not inherited
Including this in the PR for private
instance fields even though static
private identifiers are banned.
Reason: this change
improves quality of error messages,
see test case.
Thanks Ron!
Simplifiy private identifier 'any' type handling
Error on private identifier declarations for ES5/ES3
Bind `this` for private identifier property tagged template literals
Fix target for jsdocPrivateName1 test
Update getPrivateIdentifierPropertyOfType API
Make it easier to use by accepting a string
and location, rather than a PrivateIdentifier.
Thanks Ron!
remove orphaned tests
rename test
remove duplicate tests
Remove unrelated error from test
update diagnostic message 'private identifier'
The nodes for hash private fields are now
called 'private identifier'. Update one last
diagnostic message to use the new terminology.
refine solution for static private identifier fields
- use `continue` instead of `filter` for perf
- better naming
- make it clear the current solution will
need to be altered when we lift the ban on
static private identifier fields, including
a test case that should change in the future
Fix display of private identifiers in lang server
Fix bug where private identifiers in completion
tooltips in the playground were showing up
as the symbol table entries (with underscores and such).
https://github.com/microsoft/TypeScript/pull/30829#issuecomment-534157560
Signed-off-by: Max Heiber <max.heiber@gmail.com>
* fix privateIdentifier w !useDefineForClassFields
Signed-off-by: Max Heiber <max.heiber@gmail.com>
* Disallow PrivateIdentifier in Optional Chains
Signed-off-by: Max Heiber <max.heiber@gmail.com>
* restrict privateIdentifier completions correctly
Don't autocomplete privateIdentifiers in
places where they are not allowed.
Signed-off-by: Max Heiber <max.heiber@gmail.com>
* make PrivateIdentifier not a PropertyNameLiteral
Signed-off-by: Max Heiber <max.heiber@gmail.com>
* Added test.
* Accepted baselines.
* Update symbol serializer to understand private fields in JS `.d.ts` emit.
* Accepted baselines.
* fix for private field no initializer esnext
Signed-off-by: Max Heiber <max.heiber@gmail.com>
* fix private fields .d.ts emit for JS w expando
fix bug where the following in a JS file
would lead to a `#private` in the .d.ts:
```js
class C {
constructor () {
this.a = 3
}
}
```
Co-authored-by: Joey Watts <joey.watts.96@gmail.com>
Co-authored-by: Daniel Rosenwasser <DanielRosenwasser@users.noreply.github.com>
* migrate nullish coalescing commit
* add more test case
* add branch type check test
* add more tests
* fix nullish precedence
* update public api
* add rescan question question token to fix regression
* update public api baseline
* Added tests that emit for nullish coalescing operator conforming with grammar restrictions when assertions are used.
* Fixed emit to hoist temporary variables (they previously went undeclared).
Added tests to ensure calls and property accesses are only called once.
* use not equal to null
* rename factory
* add grammar check
* fix more cases
* Fix handling of nullish coalescing oprator in expando objects.
* Fixed classifier to support ?? operator.
* update baseline
* accept baseline
* fix review
* update emitter and more testcase
* update control flow
* make linter happy
* update libs
* avoid unnecessary assert
* fix typooo
* Fixes for control-flow analysis
* 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
* Add error message for keywords with escapes in them
* Move check into parser during advance to next token to utilize context for contextual keywords
* git add .
* Add tests for extended escapes
* Better error courtesy of @DanielRossenwaser
* Add test of browser-inconsistent case and alter condition to match spec
* Merge adjacent conditions
* Use seperate functions for checking keywords vs not
* Use flags to track unicode escape presence
* Adjust error text
* Remove error on invalid jsdoc tokens
In JSDoc:
1. In the scanner, don't issue an error, even for invalid identifiers.
2. In the binder, don't issue an error for reserved (but otherwise valid)
identifiers.
/**
* Example of 1: "\"
* Example of 2: @private
*/
* Update baselines
* Add invalid unicode escape test for JSDoc
* Add quotes around invalid unicode escape
* Add another unicode escape JSDoc test
* Adjust isIdentifierText to skip multiple characters when a code point is multiple chars long
* Add a few examples with mixed unicode characters
* for posterity, add some unicode cursive script characters
* Test some more planes more explicitly
