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JS: Split exportsAs into exportsDirectlyAs and reExportsAs

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Asger F
2025-11-21 12:31:34 +01:00
parent 74d725ef21
commit 78c8ab11f2
1 changed files with 26 additions and 11 deletions
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37
javascript/ql/lib/semmle/javascript/ES2015Modules.qll
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@@ -345,7 +345,17 @@ abstract class ExportDeclaration extends Stmt, @export_declaration {
/** Holds if this export declaration exports variable `v` under the name `name`. */
overlay[global]
abstract predicate exportsAs(LexicalName v, string name);
final predicate exportsAs(LexicalName v, string name) {
this.exportsDirectlyAs(v, name)
or
this.(ReExportDeclaration).reExportsAs(v, name)
}
/**
* Holds if this export declaration exports variable `v` under the name `name`,
* not counting re-exports.
*/
predicate exportsDirectlyAs(LexicalName v, string name) { none() }
/**
* Gets the data flow node corresponding to the value this declaration exports
@@ -421,7 +431,7 @@ class BulkReExportDeclaration extends ReExportDeclaration, @export_all_declarati
override ConstantString getImportedPath() { result = this.getChildExpr(0) }
overlay[global]
override predicate exportsAs(LexicalName v, string name) {
override predicate reExportsAs(LexicalName v, string name) {
this.getReExportedES2015Module().exportsAs(v, name) and
not isShadowedFromBulkExport(this.getEnclosingModule(), name)
}
@@ -468,8 +478,7 @@ class ExportDefaultDeclaration extends ExportDeclaration, @export_default_declar
/** Gets the operand statement or expression that is exported by this declaration. */
ExprOrStmt getOperand() { result = this.getChild(0) }
overlay[global]
override predicate exportsAs(LexicalName v, string name) {
override predicate exportsDirectlyAs(LexicalName v, string name) {
name = "default" and v = this.getADecl().getVariable()
}
@@ -524,16 +533,13 @@ class ExportNamedDeclaration extends ExportDeclaration, @export_named_declaratio
/** Gets the variable declaration, if any, exported by this named export. */
VarDecl getADecl() { result = this.getAnExportedDecl() }
overlay[global]
override predicate exportsAs(LexicalName v, string name) {
override predicate exportsDirectlyAs(LexicalName v, string name) {
exists(LexicalDecl vd | vd = this.getAnExportedDecl() |
name = vd.getName() and v = vd.getALexicalName()
)
or
exists(ExportSpecifier spec | spec = this.getASpecifier() and name = spec.getExportedName() |
v = spec.getLocal().(LexicalAccess).getALexicalName()
or
this.(ReExportDeclaration).getReExportedES2015Module().exportsAs(v, spec.getLocalName())
)
}
@@ -593,9 +599,8 @@ private class ExportNamespaceStep extends PreCallGraphStep {
private class TypeOnlyExportDeclaration extends ExportNamedDeclaration {
TypeOnlyExportDeclaration() { this.isTypeOnly() }
overlay[global]
override predicate exportsAs(LexicalName v, string name) {
super.exportsAs(v, name) and
override predicate exportsDirectlyAs(LexicalName v, string name) {
super.exportsDirectlyAs(v, name) and
not v instanceof Variable
}
}
@@ -777,6 +782,9 @@ abstract class ReExportDeclaration extends ExportDeclaration {
Stages::Imports::ref() and
result.getFile() = ImportPathResolver::resolveExpr(this.getImportedPath())
}
overlay[global]
abstract predicate reExportsAs(LexicalName v, string name);
}
/** A literal path expression appearing in a re-export declaration. */
@@ -803,6 +811,13 @@ class SelectiveReExportDeclaration extends ReExportDeclaration, ExportNamedDecla
override ConstantString getImportedPath() {
result = ExportNamedDeclaration.super.getImportedPath()
}
overlay[global]
override predicate reExportsAs(LexicalName v, string name) {
exists(ExportSpecifier spec | spec = this.getASpecifier() and name = spec.getExportedName() |
this.getReExportedES2015Module().exportsAs(v, spec.getLocalName())
)
}
}
/**