vendor tsgo

tools/tsgo/internal/pseudochecker/checker.go

@@ -0,0 +1,21 @@
+// pseudochecker is a limited "checker" that returns pseudo-"types" of expressions - mostly those which trivially have type nodes
+package pseudochecker
+
+// TODO: Late binding/symbol merging?
+// In strada, `expressionToTypeNode` used many `resolver` methods whose net effect was just
+// calling `Checker.GetMergedSymbol` on a symbol when dealing with accessors. Right now those
+// just use Node.Symbol, which will fail to pair up late-bound symbols. In theory, this is actually
+// fine, since ID can't possibly know if `set [q1()](a){}` and `get [q2()](): T {}` are connected
+// without performing real type checking, regardless, so it shouldn't matter. If anything, it might be
+// OK to add a "dumb" late binder that can merge multiple `[a.b.c]: T` together, but not anything else.
+// This is an area of active ~~feature-creep~~ development in ID output, prerequisite refactoring would include
+// extracting the `mergeSymbol` core checker logic into a reusable component.
+
+type PseudoChecker struct {
+	strictNullChecks           bool
+	exactOptionalPropertyTypes bool
+}
+
+func NewPseudoChecker(strictNullChecks bool, exactOptionalPropertyTypes bool) *PseudoChecker {
+	return &PseudoChecker{strictNullChecks: strictNullChecks, exactOptionalPropertyTypes: exactOptionalPropertyTypes}
+}